diff --git a/train-set/81-frames/synthetic-bg-change/composite/02de684a759576ce48f1ff2ed306c839.mp4 b/train-set/81-frames/synthetic-bg-change/composite/02de684a759576ce48f1ff2ed306c839.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..fbaa7d75aa77508ead52df6a605af07f5a7c2a97
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/02de684a759576ce48f1ff2ed306c839.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:102983114dc987b0081ca3752001cc3fd82adfc01a9f450dfd28f80871952a8e
+size 6298350
diff --git a/train-set/81-frames/synthetic-bg-change/composite/039ff4cf3d9348205aaf35d70c85e3ad.mp4 b/train-set/81-frames/synthetic-bg-change/composite/039ff4cf3d9348205aaf35d70c85e3ad.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..09d9e43977b54a57a4685a546ffc5135e5a39427
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/039ff4cf3d9348205aaf35d70c85e3ad.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:93e05b84dd9eb9d784bf38839a58c547d8863cf09e684f55e4baed2e441973f2
+size 6157726
diff --git a/train-set/81-frames/synthetic-bg-change/composite/04290b4bf216dd53af2e73af6d3d5f45.mp4 b/train-set/81-frames/synthetic-bg-change/composite/04290b4bf216dd53af2e73af6d3d5f45.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c230fa02c22809de5b57543ada935c2f88665a42
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/04290b4bf216dd53af2e73af6d3d5f45.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4a53c8daa9035d9d9ed986587018f7131d5fdcd87f6dc27947a8a970de89e960
+size 9471653
diff --git a/train-set/81-frames/synthetic-bg-change/composite/044c9523107ff2f9dcb699454f353a6d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/044c9523107ff2f9dcb699454f353a6d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..b7afb8ccd1481b941e5e54ddcbf4263d4d4071d2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/044c9523107ff2f9dcb699454f353a6d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3479af5227e54718a9568624ea6d38fbb3cd04188a642798787b1d5fcbf1adce
+size 6856462
diff --git a/train-set/81-frames/synthetic-bg-change/composite/053463056f8ad248e016a200c8297150.mp4 b/train-set/81-frames/synthetic-bg-change/composite/053463056f8ad248e016a200c8297150.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..aa11dc2dae0b820dcee7dd22a30e3311e96fcaf1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/053463056f8ad248e016a200c8297150.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fe86095e2ee5d7d63eed27ad15dbe032376e8290428ca6f0d11165ddd9088dbb
+size 6192315
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0560dda254a32b393953406e10ea8a3b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0560dda254a32b393953406e10ea8a3b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1d6b2375451ff988879b8b036f186c89abeb1335
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0560dda254a32b393953406e10ea8a3b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c88d6f7dd6b1310e5923837e4df388b24b76664fc0450e094b3c2ae4066541c
+size 5912205
diff --git a/train-set/81-frames/synthetic-bg-change/composite/05e90927503dd95373c3a2f05f5a84cc.mp4 b/train-set/81-frames/synthetic-bg-change/composite/05e90927503dd95373c3a2f05f5a84cc.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..91b4c58584602dd3866efe6c38a806a5712e3c37
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/05e90927503dd95373c3a2f05f5a84cc.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a5950cf8273a0e169b3616440ee63fd9ea7b8a209287e31065738f9c2367d372
+size 6475110
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0723979ab53aab70c3f75545232dd128.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0723979ab53aab70c3f75545232dd128.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..10cfcd8d7b6ff619d5270d1ce389574f78ba4640
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0723979ab53aab70c3f75545232dd128.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5caf5358d634fd25c347c7823ff5110ae0c8c8494415956f308e36d185e5cfd3
+size 4985307
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0879586818c6ee2089805e24a53fe1ea.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0879586818c6ee2089805e24a53fe1ea.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0cb9ad2d62d63907c723916100c6dd6c095d38b6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0879586818c6ee2089805e24a53fe1ea.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8efd912f81eb24604a6396c80468c50eb324b553d1495119a8d09218d26576ce
+size 6227457
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0883bba8619b6e4d4c9a2b9b4a3262fa.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0883bba8619b6e4d4c9a2b9b4a3262fa.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..da4e9acb6ea647f360e01c4c35f5d7a5f6bef937
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0883bba8619b6e4d4c9a2b9b4a3262fa.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e9f0783a41231e4e0cd208ee38d22f70e39c9dd3755d7687e6fc7024c01db328
+size 7219920
diff --git a/train-set/81-frames/synthetic-bg-change/composite/09639bff52d6749861fbb6d267a9e50b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/09639bff52d6749861fbb6d267a9e50b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..98461ff432cdd01d2d52e605121ba2c0a8a1ce43
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/09639bff52d6749861fbb6d267a9e50b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:222e9023d069ecd50da8b78c287767bf2ced87a27dc7a8b11edb6d8107f02dee
+size 5919495
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0d3b9434d7d7879a8049ceb2a9349e65.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0d3b9434d7d7879a8049ceb2a9349e65.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4e2817b0d79a1c4d58d83011cff100a6eaa35bb7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0d3b9434d7d7879a8049ceb2a9349e65.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eb29b69e9443c3e1dc7d08a360618753c9d5521e73a132420957f577cdc764ac
+size 6449545
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0ed95b0c5aeb6d245e36bb9b476d2574.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0ed95b0c5aeb6d245e36bb9b476d2574.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d1b90a2310c29c8dbcc80d7b43e882eedbe75a49
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0ed95b0c5aeb6d245e36bb9b476d2574.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:268f6ded657de6d63df4340fdeb91ee31926f7806a31cfe6a7b8eda5d906427c
+size 6518388
diff --git a/train-set/81-frames/synthetic-bg-change/composite/0f835bb1be55e00758cc24a5ed871573.mp4 b/train-set/81-frames/synthetic-bg-change/composite/0f835bb1be55e00758cc24a5ed871573.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0780a54ff9474932db9fe0b5495501fb25d5f3f2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/0f835bb1be55e00758cc24a5ed871573.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1ac315d8e9b60f9bf81c33a9735286f95f6756c7001829dc6a974f97a425a7fe
+size 6626891
diff --git a/train-set/81-frames/synthetic-bg-change/composite/10314bf015c72e2e90b721114c4e1a1e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/10314bf015c72e2e90b721114c4e1a1e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e8b7d3c6645071235b726bb46d72a19ab6dd89f0
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/10314bf015c72e2e90b721114c4e1a1e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:513d3c83ac0075c9ffc8ce199dfe777bf105974ac0ac6f1bf76552c460b889b3
+size 8848846
diff --git a/train-set/81-frames/synthetic-bg-change/composite/11ed6deeaaffc08530ec6aa7fb01e7a3.mp4 b/train-set/81-frames/synthetic-bg-change/composite/11ed6deeaaffc08530ec6aa7fb01e7a3.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..194062f28540a9234dc38b036912a7e584ac00a4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/11ed6deeaaffc08530ec6aa7fb01e7a3.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09663a3cb646921ce275ab9b9579fdc157e03492cb77bbd335bc1d17b4f5b72f
+size 7962991
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1245e0dfbcafa40a7af70f5b90a00c46.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1245e0dfbcafa40a7af70f5b90a00c46.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9410cf55764d4c5dcc1ed952054b41f89612e8a1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1245e0dfbcafa40a7af70f5b90a00c46.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3fc93455911f41dbff570b128cc8e1e614bc9d5616ada120c6e2f4800d32ec56
+size 7936232
diff --git a/train-set/81-frames/synthetic-bg-change/composite/131ba6ba62db65cc0496438f946a5e80.mp4 b/train-set/81-frames/synthetic-bg-change/composite/131ba6ba62db65cc0496438f946a5e80.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..364b754b438862d3b9c3f1afdbac67e016fbf13b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/131ba6ba62db65cc0496438f946a5e80.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:76243dc826bbe1ea30c4a7009c20a5d36ebeffa4c1f3dc26ae649acb66bc1abf
+size 7892057
diff --git a/train-set/81-frames/synthetic-bg-change/composite/137fcf853f7862d17829e9dae817b424.mp4 b/train-set/81-frames/synthetic-bg-change/composite/137fcf853f7862d17829e9dae817b424.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5800d10ea5d603c005efc0ee3e3460131152cf94
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/137fcf853f7862d17829e9dae817b424.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de854fcc42058bf30d169cb306afaba8936e31d6827b4a5cac9bdf0fddcb8ae7
+size 9607387
diff --git a/train-set/81-frames/synthetic-bg-change/composite/13c323115070d22be428334679ad988f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/13c323115070d22be428334679ad988f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..029d891962690e09a1c2d15724b4f0c7ed42629f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/13c323115070d22be428334679ad988f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f98664743be21c7434a2286d918942b1462560a56900dc91b273d746aaa6c1c
+size 6285413
diff --git a/train-set/81-frames/synthetic-bg-change/composite/14f292589e92cdb3b66513824127b0a6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/14f292589e92cdb3b66513824127b0a6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..18628f472f9e47f50cbf8b216aa8861f24e7a8f8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/14f292589e92cdb3b66513824127b0a6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1dd4ddd8f89082dd6e810600dba42033c2dc57b1a238ae0af0f3bc21e064c499
+size 7114124
diff --git a/train-set/81-frames/synthetic-bg-change/composite/16f99434892b4121e5f89fe88fc5e7c5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/16f99434892b4121e5f89fe88fc5e7c5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..90d217d76e6cb56018f8603e048f63daebfbc7af
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/16f99434892b4121e5f89fe88fc5e7c5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:13f83c4f194aab4a0aa5107f5eb3977cb43b7be4281c9132a521eec4e17fa432
+size 7743734
diff --git a/train-set/81-frames/synthetic-bg-change/composite/177e257b616b6c827fb6fde948fd7833.mp4 b/train-set/81-frames/synthetic-bg-change/composite/177e257b616b6c827fb6fde948fd7833.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..40e4537608cecf31452947fb0c3569355b7aa339
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/177e257b616b6c827fb6fde948fd7833.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f5cc916ab2d811394030d98e82d36533db1337c3ef9fc96a1d47f1b1cdf5446
+size 6955092
diff --git a/train-set/81-frames/synthetic-bg-change/composite/179385a51ecaa5d4623da9343ac9862b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/179385a51ecaa5d4623da9343ac9862b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e37dfd1f9ff68140e22edbaa33ffad69c1c0de47
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/179385a51ecaa5d4623da9343ac9862b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4bf78e581da859d72f37e605366dbf63ef1c5cf65f11bff1da72b826d94bda6d
+size 9143736
diff --git a/train-set/81-frames/synthetic-bg-change/composite/17a1aab65065105e3ebbe476f2b1ad9e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/17a1aab65065105e3ebbe476f2b1ad9e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..81010e2f72b482bfbe0b3cae84938437c8d9655a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/17a1aab65065105e3ebbe476f2b1ad9e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26e7e9b8a2afb4a824076c1bb622fc96207307ae144da6c0c4708a5ce8327a0c
+size 4505620
diff --git a/train-set/81-frames/synthetic-bg-change/composite/17d76bccad7ecce8e13a41e4659794f8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/17d76bccad7ecce8e13a41e4659794f8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5df5b24203e5f561154415f2626729643f59803b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/17d76bccad7ecce8e13a41e4659794f8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:10ec39116e2cf658677014fe8f8e766c882de43b75abdca43ef97c63464abc63
+size 7422430
diff --git a/train-set/81-frames/synthetic-bg-change/composite/18c334261e4bfc373f43d2aa4a61038f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/18c334261e4bfc373f43d2aa4a61038f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..39a2515b5dd208e1497fe9231ca825daf6584414
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/18c334261e4bfc373f43d2aa4a61038f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a0fc7cd9668238ccbbd4a716f8457840ef17c9b2323113af2f57f70e2e114bda
+size 4594305
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1b317c776171d5494b346760b270eda7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1b317c776171d5494b346760b270eda7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..021a932513596521d3090d695a817fda01493bec
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1b317c776171d5494b346760b270eda7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a28772cac2801a00374494323e8736da44d23207e46616a288e71c7a452ff0ea
+size 5177608
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1b6116c077a68f67f8db5a4a130ba082.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1b6116c077a68f67f8db5a4a130ba082.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..bcb13cc8b9f7a39158a835e93cee757eeeae55fe
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1b6116c077a68f67f8db5a4a130ba082.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:25977d25fe1c916e00209feebfafa1598e80d276fbba6312ca05c16b269c6d7e
+size 8505047
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1c71bfea87814b0a77960ea3750ac305.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1c71bfea87814b0a77960ea3750ac305.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9ad12a8b5e427c5131c0cdd58f6124d67cba5004
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1c71bfea87814b0a77960ea3750ac305.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e3bea0062b02b2ee0ce71f4dcedfebc19f43d96e621d48bdd11c4df53305cd10
+size 7259305
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1cef775f567c95d9dc512a3e31aef2aa.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1cef775f567c95d9dc512a3e31aef2aa.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..956675da745ee888adfe27606f72380cf7ddcf37
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1cef775f567c95d9dc512a3e31aef2aa.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:afc1b898c101c47ea5c94b366585dc8441a6f463471eed3349b4026b88da1eeb
+size 8296441
diff --git a/train-set/81-frames/synthetic-bg-change/composite/1d012577477c20d1eef35c28dc308426.mp4 b/train-set/81-frames/synthetic-bg-change/composite/1d012577477c20d1eef35c28dc308426.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..feb186929ca099300c3643155b981a6cb40c6c43
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/1d012577477c20d1eef35c28dc308426.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:df757eb0bf485cf82679a3a93cfe520e604264c22f39759b6dfd10c527f1e264
+size 4693895
diff --git a/train-set/81-frames/synthetic-bg-change/composite/21c2fb9c664d7b763c7b6a73141590e9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/21c2fb9c664d7b763c7b6a73141590e9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..bd94361094eba46fc6abed816808e15c6d417bb5
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/21c2fb9c664d7b763c7b6a73141590e9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cc862b0604818457fcc74491367df2d3c64223d942767f7fe0ed050ec69b927d
+size 5406921
diff --git a/train-set/81-frames/synthetic-bg-change/composite/23fe42acdc967fae86c4c003acf1186d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/23fe42acdc967fae86c4c003acf1186d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..507a79796588d151a3a81d3c2b35303a5acdab53
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/23fe42acdc967fae86c4c003acf1186d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1f718a0c2b1ba739d97f7000de644d01a70f5d9ce96d123e11b6ac09b42fbdc4
+size 5715389
diff --git a/train-set/81-frames/synthetic-bg-change/composite/24d675dd33f5a482843a7b66e301024d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/24d675dd33f5a482843a7b66e301024d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..427b420e770c292c0b30df4bf0a2f82a8f7dc627
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/24d675dd33f5a482843a7b66e301024d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f144756ebe8cfa900e30bf991f84507168c9f4f1f2e37ff237e66328ecd2d8a5
+size 7282385
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2627f77b775b52b7549d9974e76d0841.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2627f77b775b52b7549d9974e76d0841.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8df55328525890aa69a7ad64f72e47f0a5bfdc7a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2627f77b775b52b7549d9974e76d0841.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c27dfcef0fdb3f97f4cef415b25249d51e142b30ff170afee82f706619c81cf7
+size 7512311
diff --git a/train-set/81-frames/synthetic-bg-change/composite/27646093844e5757290951a5952131e3.mp4 b/train-set/81-frames/synthetic-bg-change/composite/27646093844e5757290951a5952131e3.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5ff32348ac1af995de2b4d94c60ed907ecea9151
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/27646093844e5757290951a5952131e3.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c0d497989c28b3d9f50c4c546d85bcaaea0b6e9be475a38c5ebcda95562d2b65
+size 5680516
diff --git a/train-set/81-frames/synthetic-bg-change/composite/28ecebf933fc91e7ae4b19c59fafb648.mp4 b/train-set/81-frames/synthetic-bg-change/composite/28ecebf933fc91e7ae4b19c59fafb648.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..de17c678c4ff2df77086728cb7db54541aa6e42f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/28ecebf933fc91e7ae4b19c59fafb648.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:252149d14248f6fb6e42954d5a063a92f0e7f15f3037c4429c66fa97b80ea9f6
+size 7627147
diff --git a/train-set/81-frames/synthetic-bg-change/composite/29ef4128fc9299a81646237b67425405.mp4 b/train-set/81-frames/synthetic-bg-change/composite/29ef4128fc9299a81646237b67425405.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..21fd6ca16ef4b86dc196028e79a36243c5b4fc0a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/29ef4128fc9299a81646237b67425405.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7bc79b95f082af48b3315c8f5f06827566c6eba52d7931ecb1c63c2cbcff17b0
+size 6623386
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2abea1a2ee1791f39e2eea5b0e320c6c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2abea1a2ee1791f39e2eea5b0e320c6c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4dca7ed646fb994d1a0d219ada0853dabd500e06
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2abea1a2ee1791f39e2eea5b0e320c6c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:02f53f8abe539e8752aff464f292f2017718bb2a4be3f51311f7419e26990f5e
+size 5782464
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2ac280191d9aab82a0962fdd7d5d08db.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2ac280191d9aab82a0962fdd7d5d08db.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5ef3d63f3420f4eeb5f9e471f9dd8516d430b723
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2ac280191d9aab82a0962fdd7d5d08db.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3cb725668cf0db8619aacc7dc53a4fbaf5ab609838a3e8499b33ae9e61bf0f99
+size 5753293
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2c0390f554c958fa7684cd2f2be770cb.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2c0390f554c958fa7684cd2f2be770cb.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c5f419ad02e5d39d07757fd195475ea60f5f74dc
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2c0390f554c958fa7684cd2f2be770cb.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a3439ae7b46dcd22004979216785100c861d751e6e3e526b04bb23c6541249e4
+size 5998821
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2da37abc248f093f4951aecfc3a329cf.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2da37abc248f093f4951aecfc3a329cf.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..62c046b7b8110d91d975f23756d65b6b2553b9c2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2da37abc248f093f4951aecfc3a329cf.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:64c1a617018c0a8e5db5a50b6c0db3a98c6bae30f7c2e64c371d773c7845fca7
+size 6258386
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2dc6701f966a58fb3e24666fd9f99af7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2dc6701f966a58fb3e24666fd9f99af7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f961b7f9ca4700f006a39b4f96e82c649cb96310
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2dc6701f966a58fb3e24666fd9f99af7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9037c821d0da7b3aede19fa49bc0bba04f234c32061801d6392b550651d60d89
+size 6047559
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2e7541f16d1a576e34ab210bc6340237.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2e7541f16d1a576e34ab210bc6340237.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a2e51145ee5ae8bad4a056897982770fdb14e844
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2e7541f16d1a576e34ab210bc6340237.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:55f41ac7358cfa23276fe1bd5f78bf3d0d4ffe63bcd55aa4cac1aeaa7e89ba3a
+size 6390276
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2e884feed562de495140397dae510c90.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2e884feed562de495140397dae510c90.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1fd15f7fbea92aedad7f2a37ffc0897c573eec0b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2e884feed562de495140397dae510c90.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd2869327b7142c586ce03fc678b7e7a97f7b53409b00b922f0cfd79499e5b50
+size 11120166
diff --git a/train-set/81-frames/synthetic-bg-change/composite/2f5dc8984d0efce141583c5da84a7677.mp4 b/train-set/81-frames/synthetic-bg-change/composite/2f5dc8984d0efce141583c5da84a7677.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..76dce225183b426aad4f16545b47ddd89c6f6407
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/2f5dc8984d0efce141583c5da84a7677.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6a7686424a3200786b2a9dab9bc54a1d0ede8d06544c032fca9174ab04bd139e
+size 6876399
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3215ff5ee43d5ea723ebda2f0c0da19d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3215ff5ee43d5ea723ebda2f0c0da19d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0977684c04b6d825e6463abca6a9f8484e5d0005
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3215ff5ee43d5ea723ebda2f0c0da19d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:edb5251bdf95101271b5124bfe6d1936f7f6fe141c1cdb6cf5ea07a0348e0725
+size 7282477
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3316121ae4cf3bb94359b72ccbfb219a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3316121ae4cf3bb94359b72ccbfb219a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..702a9fae95e8e9a7066cf1dfecb07b6e74ef0d64
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3316121ae4cf3bb94359b72ccbfb219a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:51adbd3255b01e43bffb9f900903cf6bc9c38827353860faddbe05a756d93b66
+size 6465665
diff --git a/train-set/81-frames/synthetic-bg-change/composite/34d0e5bf64b46598c4a8f0cb37f7595e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/34d0e5bf64b46598c4a8f0cb37f7595e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..068ed8a911990eab25994dba097e9b15b0d24a5a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/34d0e5bf64b46598c4a8f0cb37f7595e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:95b0ab14b8a4f26f417ff8d5e1228060b0df624dcd65b9de656cf83bcb88a72c
+size 9154316
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3769123f18fa9b96b59d143c07f26e91.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3769123f18fa9b96b59d143c07f26e91.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..430300fdf4bd015dd2b2c6dc7a107095091274d2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3769123f18fa9b96b59d143c07f26e91.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d0ab0c88105d7c0a8878e929260518ff01c8f8197154d059648fc163ec839233
+size 7911627
diff --git a/train-set/81-frames/synthetic-bg-change/composite/37a65d6161134bbdf53ebd49b4331c7e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/37a65d6161134bbdf53ebd49b4331c7e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4b906d51679f9ec90723e2fb07b8bd55518f9926
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/37a65d6161134bbdf53ebd49b4331c7e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f60cfc044d3ed6bd5ab0643ce7dff299d58a199ae659d684c8ed6caf7efdb3c2
+size 7643183
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3a088584efaf8d75929604be1241dc9a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3a088584efaf8d75929604be1241dc9a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..b617bcf174c0cde98caf72c401c8a89639300793
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3a088584efaf8d75929604be1241dc9a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1836bba8ae265ae4347ef06056956adc160d194cfa4c082e887865d346c59bc
+size 5547613
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3b25b6d6c7130fb00e3ca218bbbdc4e1.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3b25b6d6c7130fb00e3ca218bbbdc4e1.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7dcfad3c66a8a9d3528f4c3ad8e0087fab30f517
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3b25b6d6c7130fb00e3ca218bbbdc4e1.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef878f11726472eee0d1233f52675fa0eabf4e4bc748facbddfe8d8ba8a60fc9
+size 9308076
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3b3de2d4bc0bb733ed093f6d9a39b115.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3b3de2d4bc0bb733ed093f6d9a39b115.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f366a4c343315e9d96c8ed2582d4ed6c7bb4c545
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3b3de2d4bc0bb733ed093f6d9a39b115.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:385241a0413c40853f195b6c465b33a7ff54ff20c261af8ab93f10dbab94b95e
+size 5603119
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3b58f69359cde6b81efc6be73a2b75d8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3b58f69359cde6b81efc6be73a2b75d8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..deb371b6d2688db8928e68df364b6dc023821dcd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3b58f69359cde6b81efc6be73a2b75d8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:93a3469cd51750b45f933638c9ce4ad6d40f5473a8372bd050bfc5d1dd37d3fb
+size 7855413
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3ca81b243396ea771d021975b47cc1a7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3ca81b243396ea771d021975b47cc1a7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..72d37b4b396951fd4c1ce4438a6bd6835e39b0b7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3ca81b243396ea771d021975b47cc1a7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5004dcb87a61c2883e83ea06609627c8c2cf0c74fb22761f1843733a187cc946
+size 4929314
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3caf2fa62cc34131e1550b8afc592f37.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3caf2fa62cc34131e1550b8afc592f37.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..dc6c194e0043d4fb8cd4b8a1c536d771adaf391a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3caf2fa62cc34131e1550b8afc592f37.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e4339d9c54dd61723d319abb151a760a0c16761b3e091ff0eacbee1d1c30d98f
+size 10646219
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3cc9774dfc5a994f3c82b91955cf0b13.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3cc9774dfc5a994f3c82b91955cf0b13.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0e3df6a9f5733bf62fd6807fc6f859a105f4e958
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3cc9774dfc5a994f3c82b91955cf0b13.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f2c3049d3a481e82491ee8cccb318c83094aa0eb945ec8b56f0084d7382c492
+size 6791079
diff --git a/train-set/81-frames/synthetic-bg-change/composite/3e375aeaa52bf0e74b704cf309bf011f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/3e375aeaa52bf0e74b704cf309bf011f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0013d3e4d431df21ca435c9bdb247b4d758616d9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/3e375aeaa52bf0e74b704cf309bf011f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:be6d466cd7e5a4a5b04e710d852d1cebefad00eef73e0e55d421e0b9f85e317d
+size 5797464
diff --git a/train-set/81-frames/synthetic-bg-change/composite/40158add1162e8714f1841b3215f98a9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/40158add1162e8714f1841b3215f98a9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a7646b16019e671008607ecf8fee952555d17e3e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/40158add1162e8714f1841b3215f98a9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f282a0cf2c17e4adea8a1171b123cebb0fe81117d649a4fb929b0fb5c530d126
+size 5646209
diff --git a/train-set/81-frames/synthetic-bg-change/composite/40c2d5bb45d8b3aa8db1f429632baf43.mp4 b/train-set/81-frames/synthetic-bg-change/composite/40c2d5bb45d8b3aa8db1f429632baf43.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c5ba61be342251d1cb5e4c85c38c7ed183129a82
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/40c2d5bb45d8b3aa8db1f429632baf43.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8961c2cde185667a14e31d10992b8ab6ac7e43c4e0a637f46386f393213d6eab
+size 5069793
diff --git a/train-set/81-frames/synthetic-bg-change/composite/40f43b24a629ff8d92aef3915c56c53f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/40f43b24a629ff8d92aef3915c56c53f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a199556c59d4fd9ba23fe5dc928035faf602d1d1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/40f43b24a629ff8d92aef3915c56c53f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e3533cc8734f6299417ebcf7c621cce15faa6b0908f47f484959c2440ec10943
+size 5738219
diff --git a/train-set/81-frames/synthetic-bg-change/composite/42310453a9768255758e1b4163f1e6e0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/42310453a9768255758e1b4163f1e6e0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..66a652d44d660e39cc67f37db689fffda32acb15
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/42310453a9768255758e1b4163f1e6e0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:66819e651cc3c7fe62e4e675f622ac6ce629d61c3ab0082da6b26a8937049f46
+size 6847459
diff --git a/train-set/81-frames/synthetic-bg-change/composite/439535da4eb63474fe891af39c3d4269.mp4 b/train-set/81-frames/synthetic-bg-change/composite/439535da4eb63474fe891af39c3d4269.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8622ae1680108477805496b0d003d9047166135d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/439535da4eb63474fe891af39c3d4269.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65f6a3693314f36262f5cc987a674f81a2606ef3005ec8ce79902824971e5830
+size 6308638
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4544f63e832b2391da8b3d92cbc64741.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4544f63e832b2391da8b3d92cbc64741.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..fe3b72b1ff34eb04c567f7d9fcd1d2e36a11698a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4544f63e832b2391da8b3d92cbc64741.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:adbc0a1438558b3302a49eee043b76294623d747e8d49fc06bb209ef69a9b009
+size 7810313
diff --git a/train-set/81-frames/synthetic-bg-change/composite/46775f4d5887abc0ceb2ef30591dbf3a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/46775f4d5887abc0ceb2ef30591dbf3a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..37fd4cf34659fa1eb65b47ba8515d9e8bcaffae4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/46775f4d5887abc0ceb2ef30591dbf3a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cbe026f0136ba9d51ea73484bfedbb30a60a2459ae91cb4a5f1a073c651a99f6
+size 7196251
diff --git a/train-set/81-frames/synthetic-bg-change/composite/47a941dda6027239072c2f543369ba50.mp4 b/train-set/81-frames/synthetic-bg-change/composite/47a941dda6027239072c2f543369ba50.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8a9f19eb7ce79bee1267bfe7846a11357b3cb591
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/47a941dda6027239072c2f543369ba50.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f8da9ab9454dff20988798e66f3fe4d63b5065a72efd005328f489129abcf17e
+size 6310697
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4904f612794a55d4caf9df86c38bb607.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4904f612794a55d4caf9df86c38bb607.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6dc3ea23d93ca36bd1aa4f1c1082f52684181a37
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4904f612794a55d4caf9df86c38bb607.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f2d3efb615a5bed5c1dbf8321d78e7ff66a0752cb2db518bfe2640ad4d81688a
+size 5802175
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4af76402597016b51b24a195c7dda12d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4af76402597016b51b24a195c7dda12d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6c10658d02e83f84850aa5651bde92ae0fc0c948
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4af76402597016b51b24a195c7dda12d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef49495334d987f1a85b0174444d4a48d3fa8c16b73810168ea0cb7a81468f01
+size 6859598
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4b40fd8c0093b4f431b330a60bd7f932.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4b40fd8c0093b4f431b330a60bd7f932.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..eea299d3af325c9addd0b4be1c90f3ef701b044b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4b40fd8c0093b4f431b330a60bd7f932.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1388cdd5d9e22b816aeeff32a550b9fc1df7d276022a05c92f188af2802fa1d5
+size 9474514
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4baa7acae96fe6cb52b15bfa026605f5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4baa7acae96fe6cb52b15bfa026605f5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..22ea68d2f21bfe778893fe3439c5e624e1102f00
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4baa7acae96fe6cb52b15bfa026605f5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9c67b6130c26160ab1207d0bb9dec19925c790279b908ced30e51ca59edb48a9
+size 6469704
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4e77db6957e2e711fa32d55a3a0b4dee.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4e77db6957e2e711fa32d55a3a0b4dee.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..50338430f9255a78fda10b3fa6ef5c3d30ec9e60
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4e77db6957e2e711fa32d55a3a0b4dee.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ca6f50d61142f0f3318627b953466cabe9685dc3c7e274844c1424dac39d1593
+size 10034857
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4e9542c0b1db74d8732af1f28291e53d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4e9542c0b1db74d8732af1f28291e53d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ae2982d656f508e6580ea4994771ff371bac8031
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4e9542c0b1db74d8732af1f28291e53d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:feb251b2de7769a1dab5674c8bd2fa501b3ae6ee8d6e0a8b87157fe31309403e
+size 11002355
diff --git a/train-set/81-frames/synthetic-bg-change/composite/4f1e081b71d02213f94cb7226012a2eb.mp4 b/train-set/81-frames/synthetic-bg-change/composite/4f1e081b71d02213f94cb7226012a2eb.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..df01ccbca1db317a01c617e7e110b5694fe86b8c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/4f1e081b71d02213f94cb7226012a2eb.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00d52779746ae1355c88a836c792f07189f450af338dd79b5c1ea92522801345
+size 6832491
diff --git a/train-set/81-frames/synthetic-bg-change/composite/50c06bef1ce47c52eccfd8c754370a86.mp4 b/train-set/81-frames/synthetic-bg-change/composite/50c06bef1ce47c52eccfd8c754370a86.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..39f4118bdb49454e4de0461c2ac62332a2feb073
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/50c06bef1ce47c52eccfd8c754370a86.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b94b275e04821b1397f84edd857ae0f7c0550bc5fa15022c398ce67ee25e6ac2
+size 4791128
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5129151147f09360a1ee27769e0ad8a8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5129151147f09360a1ee27769e0ad8a8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0efe4fbc78df972f1f21939915452a692841d512
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5129151147f09360a1ee27769e0ad8a8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f1533720d0a16cd662e532b916c3dec8cc2c1adc5cd6b219e63e55d005a0bbb0
+size 10531883
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5137d337ab876f44262f1df0821e67c5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5137d337ab876f44262f1df0821e67c5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f0832ceb96a108419b1bb8bf2882cee82e9424d4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5137d337ab876f44262f1df0821e67c5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d00a371635ff28f1d20b328b53d7b04c220aa5d213b97d00a8d3a851f6572b48
+size 6631592
diff --git a/train-set/81-frames/synthetic-bg-change/composite/519cacd001899bf51577f82b600cdbe1.mp4 b/train-set/81-frames/synthetic-bg-change/composite/519cacd001899bf51577f82b600cdbe1.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..67495227bcacf621904eb5410a2e77154439675d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/519cacd001899bf51577f82b600cdbe1.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a60ff8500c0b822894c522cefada1d9f4c22e4d8c00ee8a24e86e5ccd91311ed
+size 5332802
diff --git a/train-set/81-frames/synthetic-bg-change/composite/526f7d41f1b61ed5543b37b6ea6eb1af.mp4 b/train-set/81-frames/synthetic-bg-change/composite/526f7d41f1b61ed5543b37b6ea6eb1af.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2ed5bb74932dc1907fb36d032cf358fbecfff061
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/526f7d41f1b61ed5543b37b6ea6eb1af.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ec8431112ea99b40af3aad972c2616c5b6b1c9edc47861b8b10df4a72082c70d
+size 7274536
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5360dc4ab867e047163c0a642e43eece.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5360dc4ab867e047163c0a642e43eece.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e71beb7478bec7ab5ed3f522272ee871ea5158d6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5360dc4ab867e047163c0a642e43eece.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6f1cbfb17268bc35003225e85130630f38e43ddda2c15d68a208114e3a8efa68
+size 7922782
diff --git a/train-set/81-frames/synthetic-bg-change/composite/53e2640d95a799416d8b5cacc5816b90.mp4 b/train-set/81-frames/synthetic-bg-change/composite/53e2640d95a799416d8b5cacc5816b90.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1cf032d65a6340591051d5340ea1eb9e3748e09e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/53e2640d95a799416d8b5cacc5816b90.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d1684b688fbefb5ead40f044b0b538fb994558f6bd5bdeb6b5c78273e66ecb5c
+size 7054044
diff --git a/train-set/81-frames/synthetic-bg-change/composite/56192a69cac33435aa28f3ae3206309c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/56192a69cac33435aa28f3ae3206309c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ded9f14e028ac3ddff350e082a27f5055d97476f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/56192a69cac33435aa28f3ae3206309c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4299ad2017292398e875441c64f0acadc632c9f7472a15817f9c19bd271bb190
+size 7091912
diff --git a/train-set/81-frames/synthetic-bg-change/composite/56c8479560972166cdde9be674213737.mp4 b/train-set/81-frames/synthetic-bg-change/composite/56c8479560972166cdde9be674213737.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..13830c2d802ecdfbb7dc93368a7142e987c9a723
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/56c8479560972166cdde9be674213737.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:38f46e4933bcc9029bae7f06e2591867821ed4609db46108a4ccd765c2091d92
+size 5777686
diff --git a/train-set/81-frames/synthetic-bg-change/composite/595d6fb7cda3f3ad9cae3b19df12e03c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/595d6fb7cda3f3ad9cae3b19df12e03c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..b58600586fe50752d9621763cd492a6b592bdc49
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/595d6fb7cda3f3ad9cae3b19df12e03c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0976d04a822ef68f9b5c3d380bc8a5a51cceb3df3c2cc39040bbd03b7fc60698
+size 7019191
diff --git a/train-set/81-frames/synthetic-bg-change/composite/597cfdc00811ef1f4d0bd45d36286f63.mp4 b/train-set/81-frames/synthetic-bg-change/composite/597cfdc00811ef1f4d0bd45d36286f63.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d62cedfb265bc72da7da7c8a895fe8692a355f56
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/597cfdc00811ef1f4d0bd45d36286f63.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:63e417f30f5d6de077fdfe00415ceac2f67007aed33ce826a5cd38b60c9af410
+size 5982878
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5ab426ac0bb7e1e04e9b5cb0cfaceceb.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5ab426ac0bb7e1e04e9b5cb0cfaceceb.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a9ec203c045da1190c8bee0d21db2ffbe619b120
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5ab426ac0bb7e1e04e9b5cb0cfaceceb.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:05e45febc8c0921fad8c3296255f593fa9954e5f6744806a4adf98145cb2d132
+size 5063119
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5b8d04f3fe5dea70b5e26ea2b3f19d6d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5b8d04f3fe5dea70b5e26ea2b3f19d6d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..16ebcdb7a67dab9062320b52d55bd58c212a6fe4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5b8d04f3fe5dea70b5e26ea2b3f19d6d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b3eeae9b223509b8e67b4077528a306b07acc77c79dd5167a5172a9c3226513f
+size 8775216
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5b9a90a8245d004a99b5cdda84bf6e7f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5b9a90a8245d004a99b5cdda84bf6e7f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7af9478d0611814857c6e758175dd136b2991fe9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5b9a90a8245d004a99b5cdda84bf6e7f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53eeb03da76b5c92ff6f393aeefa147e28915b2c6b032975442951170c3710d6
+size 5272061
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5be043f6ba0c6a85c8ddc26dff185f3d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5be043f6ba0c6a85c8ddc26dff185f3d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5d0cb41dfee90e14fd46dfdc3940fdcd9c269d59
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5be043f6ba0c6a85c8ddc26dff185f3d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:74dca18de67c830c85ec05c1b7c653603e4e142e15e02f938ccea02dbfd7ad59
+size 4527557
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5ca5ae2856b2f02a40ef30ecb1d8a828.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5ca5ae2856b2f02a40ef30ecb1d8a828.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..372c98df9c1b5844daedd76622a48af498ed4db7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5ca5ae2856b2f02a40ef30ecb1d8a828.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b19e6878d0381bdaeb93b8e1900993e4db9b211257dcb7497c5e779506f717ed
+size 6792053
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5e73ddfacc2a9286e78e4208503649f7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5e73ddfacc2a9286e78e4208503649f7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f89d21f933c3ac77e96f0f2bd6321fa8aeaa6983
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5e73ddfacc2a9286e78e4208503649f7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c889c12eb2da118ceb5a8727f63b83709ee22c5fa22728ec14bf5cb089e83f6
+size 6242021
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5f760c7f493a8e74a2992910dd8674b0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5f760c7f493a8e74a2992910dd8674b0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a1d59ffddba4ff9259022228551bac7093b434d4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5f760c7f493a8e74a2992910dd8674b0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f955aec1d0321e1b4c5d60c7458b2f618452f4b3c2a5b9eef33c735e671b721
+size 7339563
diff --git a/train-set/81-frames/synthetic-bg-change/composite/5f7bc12b136bc5c2ed33ff2663e1dbe6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/5f7bc12b136bc5c2ed33ff2663e1dbe6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..20487319c5d1f97cfd03f54416e54ae14b2af1f2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/5f7bc12b136bc5c2ed33ff2663e1dbe6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c6e8fb4df6e84d24dc87f2da357408b51c2e2a9f0f0067c62a75a21a132be5f
+size 5472177
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6026eb13388ea11c984e349ab09e221a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6026eb13388ea11c984e349ab09e221a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d387c774d8fc502be0cc2ce0ee2c1bd34033f2e4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6026eb13388ea11c984e349ab09e221a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5514ea716cd0720eef1db0e416bbf3b5e4a0fe3a104a579003026a05168c4324
+size 6188905
diff --git a/train-set/81-frames/synthetic-bg-change/composite/62a158904036719cbcef7b029825f6ed.mp4 b/train-set/81-frames/synthetic-bg-change/composite/62a158904036719cbcef7b029825f6ed.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..546d959aa98928c24222e728e7ba3e4858d5d5ee
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/62a158904036719cbcef7b029825f6ed.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e314abb32974fd175b032a1976e9a187a7ddc6fa1c7e6a9f55159bef5133181
+size 8646725
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6345243146f86d7e4f2b45605160c8b4.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6345243146f86d7e4f2b45605160c8b4.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ae36f60c8fd3269a6b8ae09f0ad99c9989607e81
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6345243146f86d7e4f2b45605160c8b4.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8069af168a47160248e8aa4a12a63b7dba9d7dc0bc290b9f12281b084a7af464
+size 6877871
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6669b44f1fc30b25bb8214a9d065fd11.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6669b44f1fc30b25bb8214a9d065fd11.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d798bdcd095ee9d949e97d4bd90f3b25f59edb04
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6669b44f1fc30b25bb8214a9d065fd11.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b83a1d65e721da38fabf756e0d611caf1e80d9948a39096249d37121282078e4
+size 6714246
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6e16c374e193ce5feff4eecbc3fab93c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6e16c374e193ce5feff4eecbc3fab93c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ca1294d05212716f04c994287913edd867b8cd2f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6e16c374e193ce5feff4eecbc3fab93c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c785ff9cd4e6d4412ec0285e9da360d9b4ba15447914c73ba07be4dcdab9474
+size 5571284
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6e8a77ba98461daf798e697d7eebc767.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6e8a77ba98461daf798e697d7eebc767.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d126581395cbfdadcb8dfb382d95a6ce16332044
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6e8a77ba98461daf798e697d7eebc767.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7593cbe584fbcb8dfcf366160634faa9c1b72938fb62e602a4229efea5ddec2e
+size 7018423
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6efc01df20c3aeff52654928eeb575af.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6efc01df20c3aeff52654928eeb575af.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..48232b57b24c9847795438c37b2838715ec2f00d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6efc01df20c3aeff52654928eeb575af.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:807c73c3e0969f8a3de3da17e580625f351b7aff77c45b78d59dd348ef9f3d7b
+size 9090702
diff --git a/train-set/81-frames/synthetic-bg-change/composite/6fcbab9ac0d4d35a23096d20a3974b42.mp4 b/train-set/81-frames/synthetic-bg-change/composite/6fcbab9ac0d4d35a23096d20a3974b42.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8ef290a620d64fd71ecfe7be4a058cc4e2518428
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/6fcbab9ac0d4d35a23096d20a3974b42.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8fbb908a284824492dc6bf23fd4d73886bc813c41c1f191023e5e56f091f069d
+size 5879530
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7143b8bf89d79c78075242398125a498.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7143b8bf89d79c78075242398125a498.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..108920fba8763d7c8e56d7e7364c41dd9e6b5d07
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7143b8bf89d79c78075242398125a498.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:12eb4f2d19aa1291016bd3807489a30f478755702c93436abbb9eac3da5e50ad
+size 7792306
diff --git a/train-set/81-frames/synthetic-bg-change/composite/719ee09963e297186cf125d8378b8cf9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/719ee09963e297186cf125d8378b8cf9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f5fecb12fc2508955432a7fb1e830729d41361ab
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/719ee09963e297186cf125d8378b8cf9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:404659e29530395c85aeb5b43ceb58d6645bede92cf8d63178702e8d57196738
+size 6873332
diff --git a/train-set/81-frames/synthetic-bg-change/composite/71ad953dae3f5dedcc03538888682ca7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/71ad953dae3f5dedcc03538888682ca7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..eae1ba04259009639c362020be6d0e30781032d9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/71ad953dae3f5dedcc03538888682ca7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:23a03967ac7c63bc84d92609c85b5da9cde9435eaf1e141152e2083f2ff90844
+size 6534833
diff --git a/train-set/81-frames/synthetic-bg-change/composite/71d1f3ef07ad64de2ffe14cba15f0aaa.mp4 b/train-set/81-frames/synthetic-bg-change/composite/71d1f3ef07ad64de2ffe14cba15f0aaa.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..10fb71422fbfea121e413b4c9ef9781dd1b2efa8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/71d1f3ef07ad64de2ffe14cba15f0aaa.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f6cc5c45c602b94e6726646a9768924042bc4dd1de382e34a025f65af645105b
+size 7642202
diff --git a/train-set/81-frames/synthetic-bg-change/composite/72116a4736fe2113c25d9d72716392dd.mp4 b/train-set/81-frames/synthetic-bg-change/composite/72116a4736fe2113c25d9d72716392dd.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4f9c2108ce9554ce313f8f1be2f9ca29d1e27b23
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/72116a4736fe2113c25d9d72716392dd.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6def01c2f2e5952787d1ef16afecdb8522e0aae6a5f3ede5e6ca81f0a0954477
+size 7594773
diff --git a/train-set/81-frames/synthetic-bg-change/composite/72641987072ee4e7b64bbc6ee36b7971.mp4 b/train-set/81-frames/synthetic-bg-change/composite/72641987072ee4e7b64bbc6ee36b7971.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a51db173e43683b201d17c00de24216c1cf89e3f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/72641987072ee4e7b64bbc6ee36b7971.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28db35aa7bc3aa21d08ca077d6d367c1234e6a1c87956e9b1b44a58a2680f328
+size 6171558
diff --git a/train-set/81-frames/synthetic-bg-change/composite/730026086382cc59874c43d7b4da250a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/730026086382cc59874c43d7b4da250a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..44f0b60e7759e546becf30760e5f5d30ddc437b3
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/730026086382cc59874c43d7b4da250a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7544868e217dc77bd196047a1d82dbdafa7bd83e5c81c9907bbbad5ae50a3663
+size 7063786
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7489b120b0d036e19aab013897e2a928.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7489b120b0d036e19aab013897e2a928.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..fecb51c893da58b1bb9b7471da1ca9be4b751d7b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7489b120b0d036e19aab013897e2a928.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1dab0e3945b5c83bd80df9e72604bcc82fef07c22eba79b049421578ea066aac
+size 4186970
diff --git a/train-set/81-frames/synthetic-bg-change/composite/75b2b9e035aad3cadcec2963d24bda15.mp4 b/train-set/81-frames/synthetic-bg-change/composite/75b2b9e035aad3cadcec2963d24bda15.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5d0ad9fcc98cebde79e4c65824b27394e59f6341
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/75b2b9e035aad3cadcec2963d24bda15.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:734da336baac664b1715763a3c6172e6a05da3994e8fd431f57aebf7ba7e2791
+size 5609282
diff --git a/train-set/81-frames/synthetic-bg-change/composite/76b4342aea9e2175ed9cb692db9f9304.mp4 b/train-set/81-frames/synthetic-bg-change/composite/76b4342aea9e2175ed9cb692db9f9304.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..07145e1ce229531deb81107cd0ba07cd0cf7f9d7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/76b4342aea9e2175ed9cb692db9f9304.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f4d7bec62346adefcf2d135e94e2e423d6cd46385253fd274437eed145f3f774
+size 8599411
diff --git a/train-set/81-frames/synthetic-bg-change/composite/76f7ae1c61d161519202e2811f9f6b47.mp4 b/train-set/81-frames/synthetic-bg-change/composite/76f7ae1c61d161519202e2811f9f6b47.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..34de67385a31cce21cf444eeb748be05fcbbe894
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/76f7ae1c61d161519202e2811f9f6b47.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:97640646f78821ca74aac57176143035a099e7c2f678d3b8d88056b0e701752a
+size 7484374
diff --git a/train-set/81-frames/synthetic-bg-change/composite/77e0da1534d6015cfa755b6be4b9d647.mp4 b/train-set/81-frames/synthetic-bg-change/composite/77e0da1534d6015cfa755b6be4b9d647.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..77e7f4fe4f3a8d17d8274ccd01cf61873b97c74b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/77e0da1534d6015cfa755b6be4b9d647.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7164fb6f1f4f14363deee23af7b63495fad9b97fd2ebd71584f6ea4aa34a8abb
+size 8593025
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7a710c44516283a0d0e1ac7ce555d4f1.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7a710c44516283a0d0e1ac7ce555d4f1.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..aedec280222abfc191205e8af23abd6d94b9157e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7a710c44516283a0d0e1ac7ce555d4f1.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a8edaf477329b7ede337ec00917de2973ca3367310f0bb746f0e406b17773266
+size 5674714
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7add65e36ddfb28146fb381251203ae9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7add65e36ddfb28146fb381251203ae9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..91c39d3deb895e397688ef375ccf1e9bb8a190bb
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7add65e36ddfb28146fb381251203ae9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c53dacb5367c85fb171de7de6ed88b06e09a98bac6ba6e3869b5ff4b0e4ef372
+size 5788337
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7b26721f25f0aa71d0b083eb56914cde.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7b26721f25f0aa71d0b083eb56914cde.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c1d2fecbdea81c0f84df7a713a347986a16ba908
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7b26721f25f0aa71d0b083eb56914cde.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:43fbdcba56ee2a63763cc8cc79538f79cb0c4fe1b5236f4cad2ba1389cf7aeff
+size 10082803
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7bb5b28e1866467bdcaa34d756ab20c7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7bb5b28e1866467bdcaa34d756ab20c7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8c7f90de32132d23f90784caeb32dfe7f215f5d0
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7bb5b28e1866467bdcaa34d756ab20c7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5696fc29f2580540e4c88f3ddcd9936a95026c2a57454f4eb648273babd8fba4
+size 8113052
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7dbba8c22cff22eddfe64fab1131d0f7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7dbba8c22cff22eddfe64fab1131d0f7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4bf0eca69d9814fd5b82d770d2f7a62cb5133d9d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7dbba8c22cff22eddfe64fab1131d0f7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8abbb060424a587d53f89841ea51e5be306fca2ca9388df857dc69fccfb446dd
+size 6663249
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7e216aa4310d58daa835ccfcfbeb435b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7e216aa4310d58daa835ccfcfbeb435b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0faf1004a576727618c46ae292de0d2b19788034
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7e216aa4310d58daa835ccfcfbeb435b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3dff07cccfe2513896635917bc1e1694d3a4bd67897c7c0223bec844ba0e674c
+size 6159379
diff --git a/train-set/81-frames/synthetic-bg-change/composite/7f2d1752fe3e93181f2761b1fb87427a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/7f2d1752fe3e93181f2761b1fb87427a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..769784602e74dbc9f4db7cfa84bbe6a9129bd265
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/7f2d1752fe3e93181f2761b1fb87427a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e343c4cd7b675651ad7f1ccf7c1459c5f13d486795939643a934bec46a6330f
+size 5749002
diff --git a/train-set/81-frames/synthetic-bg-change/composite/813ff817ad95cd0598fe57ab10212e34.mp4 b/train-set/81-frames/synthetic-bg-change/composite/813ff817ad95cd0598fe57ab10212e34.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e42ea52a019de8a07ac19b5be73771a875b3d197
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/813ff817ad95cd0598fe57ab10212e34.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d8c14103f52a7411a2bab3ad06cd42f60aef754f8ec3c5fda6216940a89abe30
+size 7325789
diff --git a/train-set/81-frames/synthetic-bg-change/composite/82128f593a7013cb7a78ac0078eaaa00.mp4 b/train-set/81-frames/synthetic-bg-change/composite/82128f593a7013cb7a78ac0078eaaa00.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7268b20ced211fb0b59c7a4fe93ba701370a3646
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/82128f593a7013cb7a78ac0078eaaa00.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67509148784c0ebb16b0dce8c276437338e930c6944fd2c4125b286fb386c9d4
+size 5922638
diff --git a/train-set/81-frames/synthetic-bg-change/composite/82d3c07cd86fb7a926a62482c876bc2f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/82d3c07cd86fb7a926a62482c876bc2f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9ebedfa407e28f2158a55113f78ff5430334d775
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/82d3c07cd86fb7a926a62482c876bc2f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8ba303e585976ea5cde544e7380c4851f6aedd694af696ba56a3429e7afec3b6
+size 9445900
diff --git a/train-set/81-frames/synthetic-bg-change/composite/83cb86718c939304b4a4f1d800a5720a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/83cb86718c939304b4a4f1d800a5720a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7731f7f14bc48e497a9cdb055b7366826ca3b3ab
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/83cb86718c939304b4a4f1d800a5720a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5e244b320a78f3d8f965e324a8bd5900a1aab32cc884e0678ad6dcf9d73f5f15
+size 6278445
diff --git a/train-set/81-frames/synthetic-bg-change/composite/85c047776a26ff1df6b54b64e1092c00.mp4 b/train-set/81-frames/synthetic-bg-change/composite/85c047776a26ff1df6b54b64e1092c00.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e178e9bd7652a50350c3ce19c8f7c43cf1cddcc9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/85c047776a26ff1df6b54b64e1092c00.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd18fc614c450f4f54b71209026184ee280c5524f85a40dac2c79353dbd8ca23
+size 7088465
diff --git a/train-set/81-frames/synthetic-bg-change/composite/86be0a5d230879a57b42e97c6f3d7afe.mp4 b/train-set/81-frames/synthetic-bg-change/composite/86be0a5d230879a57b42e97c6f3d7afe.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..20c35130efdc76ad25b6837fcd38f04bbfb9fea5
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/86be0a5d230879a57b42e97c6f3d7afe.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1e92edbb88545afefde517c946c5277ef0502ff74e99d72818edeffea1c12243
+size 7983954
diff --git a/train-set/81-frames/synthetic-bg-change/composite/870eda95b183d3591c1878a3b7887405.mp4 b/train-set/81-frames/synthetic-bg-change/composite/870eda95b183d3591c1878a3b7887405.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..35e676bb45bc60cfff5071d6654b847c46c7323c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/870eda95b183d3591c1878a3b7887405.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:620fe928e1ed214a628ddc9fe39b37bea90ad8af74d8a571337a315207e6b104
+size 8129142
diff --git a/train-set/81-frames/synthetic-bg-change/composite/87bcdc7a37c744281e78d06a0644628c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/87bcdc7a37c744281e78d06a0644628c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1cd8b0192ef1a932b723c73f854c7555b121fd28
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/87bcdc7a37c744281e78d06a0644628c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:314a651fb625f8ba9360615fec9218c0d30e7a49946f052fe9dea4779a2c1301
+size 7085134
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8820e3f175c21832a3523b53b22d3379.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8820e3f175c21832a3523b53b22d3379.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..b028cbe3aefb5ff5250ba2769885c478af4dc22b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8820e3f175c21832a3523b53b22d3379.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6224100637defeaab32b66a9b8361671faead786c5fa16d43d09fa3f0dc8ffc4
+size 5576742
diff --git a/train-set/81-frames/synthetic-bg-change/composite/88aabef6309a7b2f69bae01dcf69c2f0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/88aabef6309a7b2f69bae01dcf69c2f0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..86fe13160d1866252aaf9ada640ddbfe095d65ca
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/88aabef6309a7b2f69bae01dcf69c2f0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:302e56319989318b01d4f6096bad695a40fe849173dda235e8cb48fe7df148b7
+size 5060966
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8b21f08449ca3bbfbe065f9cefeb57b0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8b21f08449ca3bbfbe065f9cefeb57b0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..cc889d5935d84209d1f6d7a210e2828d1fec50b1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8b21f08449ca3bbfbe065f9cefeb57b0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5010433eea838f1cf0faa81937053d675fe9d71b7070eee7e011de6580c5853a
+size 6983777
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8b37d2024b92d88ccb70d3c3a8c47c67.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8b37d2024b92d88ccb70d3c3a8c47c67.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4bd34b1315c0f71587bac70788a03ecc3d0abf34
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8b37d2024b92d88ccb70d3c3a8c47c67.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:59a13ee6867b5e94756afdfc4ecf3817db74b0464d1170f4f192b05ca0e102e7
+size 9035556
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8bab88b6ca23cfdd3f55a7a1f97d7abe.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8bab88b6ca23cfdd3f55a7a1f97d7abe.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e03d368266962a9dd155c718bf856757e000077f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8bab88b6ca23cfdd3f55a7a1f97d7abe.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:96dd3f867e3fcf81ef671603a61a8c758b921c45f5a8e86e8199ba956b91eb8a
+size 3942739
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8c9281a5c6a9968dff221c8580646a78.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8c9281a5c6a9968dff221c8580646a78.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c9ff694487a5560828247bc17c8d5064bc6f5588
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8c9281a5c6a9968dff221c8580646a78.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d8be2df1ad4828a849350e9dd8caaa196b46ba6a0a719b694a27e4c2fa36ab9
+size 7830744
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8c9406bdcd19a14f7fb010cc6b9c120b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8c9406bdcd19a14f7fb010cc6b9c120b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c6e760266bdf623f3f3a45a0d8e1fe5749b68703
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8c9406bdcd19a14f7fb010cc6b9c120b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dfa39c3e79b4b4342a81aa8a378798dfbcfb52c1c3e651d1abdf488f2d66e620
+size 6898767
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8ccb1c4e6168e3dcb4479cf3acda46d7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8ccb1c4e6168e3dcb4479cf3acda46d7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..93c392b21d7d837d8255b6989c55219e3e5d1dc3
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8ccb1c4e6168e3dcb4479cf3acda46d7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:97cedfa4fd9b7ae5f11852a69b0921a3613eabd413d79735dd95a49b3bfe5fed
+size 6337288
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8d8f328fecfa5d8b2601efa90579f5b9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8d8f328fecfa5d8b2601efa90579f5b9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..104966bf15b454cc273bcbef71aad2690b082e1b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8d8f328fecfa5d8b2601efa90579f5b9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16c848bebc62b17862ddb23983244d11fdaacdcbde01bc9917e293270bde961a
+size 6256836
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8db0d4e451298656faf9f9942d5a2853.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8db0d4e451298656faf9f9942d5a2853.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a545538891362d5c37505097b82310d7991006b9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8db0d4e451298656faf9f9942d5a2853.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c48327cf68835f5eccd54fc1cb16ad640287e953df18201a4d9f64fcef2ccd7
+size 8217508
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8e632cc4611863dafd55a7d08f0a08f1.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8e632cc4611863dafd55a7d08f0a08f1.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c36bcb5967df08a4d687b003b59b78fcbfc5effd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8e632cc4611863dafd55a7d08f0a08f1.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c16181e7193e74bb1f98019dc220b051f4745eb85a6d261221afc0e3bd5249c6
+size 6137882
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8ea7d034bfe5fd8e273a0f4a6d4ae8ec.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8ea7d034bfe5fd8e273a0f4a6d4ae8ec.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f333cf0e17164d10ee27393f441c4485b23bd92d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8ea7d034bfe5fd8e273a0f4a6d4ae8ec.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1e22e33e644a1449ad717f631ece605dfa258ec9774115968ca7555fe54b5f80
+size 5154386
diff --git a/train-set/81-frames/synthetic-bg-change/composite/8f43d95ed542cc0d76f2477f44e82c3e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/8f43d95ed542cc0d76f2477f44e82c3e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d980d1d459c35c9ba47171bcf811adeb770368d3
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/8f43d95ed542cc0d76f2477f44e82c3e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:684a4e1e73d306847fdd5982933a07fe8bf21e85789d62ae382fd456605ab5e0
+size 6800514
diff --git a/train-set/81-frames/synthetic-bg-change/composite/90036aab1af3668c75da4bbc32354085.mp4 b/train-set/81-frames/synthetic-bg-change/composite/90036aab1af3668c75da4bbc32354085.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2776cdaf014b9ce30739395b1d8bef42a5066dac
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/90036aab1af3668c75da4bbc32354085.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:792717ee86d62a0d717a6865f4ab8513514a57f0af97c507befe833de607f774
+size 5205239
diff --git a/train-set/81-frames/synthetic-bg-change/composite/905552e6ae8664683a88af55636ea105.mp4 b/train-set/81-frames/synthetic-bg-change/composite/905552e6ae8664683a88af55636ea105.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6371c067223679cfc888897545abfe15ddd28097
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/905552e6ae8664683a88af55636ea105.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ccc78d8dc8263dedeffc4efd93b116b77d886846060cb113e3dbbc76cb4fae57
+size 6402238
diff --git a/train-set/81-frames/synthetic-bg-change/composite/90b4972e248c2d841dc44bae7349f811.mp4 b/train-set/81-frames/synthetic-bg-change/composite/90b4972e248c2d841dc44bae7349f811.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6aaf839a94f42112a326a68c3ebaa0c390cb69bf
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/90b4972e248c2d841dc44bae7349f811.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:22d311394f148949eab29891e25cc5446cb558d06de95d9f76888c7699a97436
+size 9767994
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9257c7be8b03fbe36d234339ca7bfc0a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9257c7be8b03fbe36d234339ca7bfc0a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..81ca435b57f3dbda02f1679d7ef35c9f99fa438b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9257c7be8b03fbe36d234339ca7bfc0a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9faf93d0655efc1e8e62ca82402fa58d77a27d6915af0a77804316d7bf898901
+size 4868364
diff --git a/train-set/81-frames/synthetic-bg-change/composite/929733874be1f385005968c9eb1124e8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/929733874be1f385005968c9eb1124e8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d2d22ec9d594739332117233060504435dae0019
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/929733874be1f385005968c9eb1124e8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8177d82b6122670e29b29a7dc2274b4ad335efd15652a28add95c30b8647103d
+size 6545499
diff --git a/train-set/81-frames/synthetic-bg-change/composite/92d8d6f0138f91139776e984da5f9578.mp4 b/train-set/81-frames/synthetic-bg-change/composite/92d8d6f0138f91139776e984da5f9578.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..04c121f3e8edb6923974a2084d64c3e748862a6c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/92d8d6f0138f91139776e984da5f9578.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cbb5e25f474c4798409aa31a76c3c75605841e5eb3fff8a1b531ce5a1ff17b01
+size 7165583
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9467118e518ae1b497d4ac70812a4f01.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9467118e518ae1b497d4ac70812a4f01.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..751f29941082a7d94035b64c42c660ede227ac4f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9467118e518ae1b497d4ac70812a4f01.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0bdf09c793415e57bacc1de01c75deb862f2e93ee96cad921d71376c47feb718
+size 6110141
diff --git a/train-set/81-frames/synthetic-bg-change/composite/96256887b2813f5c6e21fae4775ea7c5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/96256887b2813f5c6e21fae4775ea7c5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..de9b187bfdc43bedd790494299e6f2af1b2be90e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/96256887b2813f5c6e21fae4775ea7c5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d3876357a7537db3ece0069780fa72dda1ece2033106a803c9bb5386980ea01
+size 6510163
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9634c4c4c27aab5291a8ba6d18cb237c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9634c4c4c27aab5291a8ba6d18cb237c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..dcecddf8385f1a8e65492c1deb77447e6b3cf515
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9634c4c4c27aab5291a8ba6d18cb237c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af8dc9ea8966c46bcee1acaa0e18fe79a0af48628d07844a24d3a4c02f143f6b
+size 7121073
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9a7e45a40e1a77d4df3d5575d7dc2117.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9a7e45a40e1a77d4df3d5575d7dc2117.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..185ff5803d0a3e25325ab50cf517419ce7d5b89a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9a7e45a40e1a77d4df3d5575d7dc2117.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d273151877e8be8ebe0712531d0c9945280428cb6fd41a411680f384ffa5b814
+size 6932675
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9a9d1290852447396ed5ef6b8e1c1665.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9a9d1290852447396ed5ef6b8e1c1665.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..21d54e955d4e7eee2d8ef1b892603ff5b5ba49ca
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9a9d1290852447396ed5ef6b8e1c1665.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8205ec6e70c63e879539fe995651341b70228527b8468a65546a3c1d70ae94fe
+size 6263702
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9b3ac706da87417c4645052f4d129be0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9b3ac706da87417c4645052f4d129be0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7ae1eeece0190498687cded357cd1ced4ec422f2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9b3ac706da87417c4645052f4d129be0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:366592859523d6630fb062a2582c0f97c378c4e2bfbdc93132b6897497741dd9
+size 9349864
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9b676f7f5b46e507ad26deee9750915d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9b676f7f5b46e507ad26deee9750915d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e0e585715d85a5349b02895989a1c0faf388b3d8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9b676f7f5b46e507ad26deee9750915d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:468e505e33cdbcf840233c451e09c051a174a11a4b0ce7f50bde8e00bbeebe28
+size 7142691
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9d156205e18b0ff764fcbc04c3031783.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9d156205e18b0ff764fcbc04c3031783.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..533b5354da4c2bcccbbaf01c8bc5157b37cf5921
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9d156205e18b0ff764fcbc04c3031783.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65f194419500d4cd39e7c902f4726a57e77731304667d1021427376e0a168c64
+size 5400497
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9e127f0e4660391b3af4210c9a9ed0f8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9e127f0e4660391b3af4210c9a9ed0f8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..bb3486861872f8fd46511aa193c10d9e940cf10d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9e127f0e4660391b3af4210c9a9ed0f8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:64346f27b4f2b351b0691be3cc30c831b5cb9c659ffc8ecac4bc74c2f67bf18f
+size 8433186
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9e4385fa3fccf0d3553a25e1f6c06f5e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9e4385fa3fccf0d3553a25e1f6c06f5e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..262eb9244850e4e91d89bf4df1e682559aa1359d
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9e4385fa3fccf0d3553a25e1f6c06f5e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6ccdd3776029a2c310d0fd11d3b168f4bbcf91aa94747714f0f36b9cd8b18f43
+size 6365912
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9f00f1847f4556521e94133757377156.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9f00f1847f4556521e94133757377156.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7b70bf534ad69e4ecb822f17d16c017e600c322e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9f00f1847f4556521e94133757377156.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a59185ef2e7bf2051ba50165440880a94600d7e7dde3abe00ff409fdedcafb2d
+size 8717257
diff --git a/train-set/81-frames/synthetic-bg-change/composite/9fc2dbf4506b3048ef0ee91ac54de12d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/9fc2dbf4506b3048ef0ee91ac54de12d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a19b4954e3f466fd6effff5342ed27dbc1f77ce8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/9fc2dbf4506b3048ef0ee91ac54de12d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fe5d76c552c7d093a5fea1b159a155f8587d9772de7a5792fd6047b348b1f894
+size 7561578
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a09f3b45ef1cc3e84523359ec8f7da99.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a09f3b45ef1cc3e84523359ec8f7da99.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e909e49f275bf41a6552ce3256076a2f0507aee7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a09f3b45ef1cc3e84523359ec8f7da99.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c6bfa09aa3fd1f148984061c76a65aa12600178d7e60d37a43df4dfc28dbd966
+size 6827949
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a15d14bef8863ac23685de3f49c8469f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a15d14bef8863ac23685de3f49c8469f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..410c384d9c539dbd262cabf9950bec3002c788d9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a15d14bef8863ac23685de3f49c8469f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3f6c574c0b11fda8a233392e3335a0687309415d9207f58378e83203fab31e8e
+size 5284756
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a1926fd32e52a7892c3e73e9909d1b70.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a1926fd32e52a7892c3e73e9909d1b70.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..da7cbbeff51339c904f4ae1b10ddfbd88aa643d2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a1926fd32e52a7892c3e73e9909d1b70.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:adfc0e93b39ad37e709a957bb2c2b015ff4406a85e6e5f7fbe0b11f6fada32d8
+size 5871477
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a1b51d0e9d71ac3a6575bde96512ac37.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a1b51d0e9d71ac3a6575bde96512ac37.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..90ac7c4a8a3f55d837053e1af04fb4bbf8b56a16
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a1b51d0e9d71ac3a6575bde96512ac37.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd11c0dc1137fb59167fb0fba972e6b573bd5b931cf49801a31ff3f8491309d4
+size 6611350
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a1d6fb898b03f0b75a7265d495dabc81.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a1d6fb898b03f0b75a7265d495dabc81.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5961ebf6b6266e0c4ec4bcd64418101d9e1e3df1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a1d6fb898b03f0b75a7265d495dabc81.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a7a0045bc09b07ae1babf816cf987e8ed133f64edff612858c5188caf759e05f
+size 7400432
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a1dc0659bd1ea15be9aaf85375ad8ac8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a1dc0659bd1ea15be9aaf85375ad8ac8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..82981397369902ffa164c2325eb807376c101a9c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a1dc0659bd1ea15be9aaf85375ad8ac8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:12c28ef86ddf2b09a049fb507ac7baa6741aef76528faf9184cab73bdfc5a826
+size 7019725
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a2260649843a5f4010797b45049cf13d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a2260649843a5f4010797b45049cf13d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2771b670aef8a0e137450cc6c903dc77812c9ed0
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a2260649843a5f4010797b45049cf13d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4cbd89bd819f8af770e9580d2668a8e50b9f6a056aa125d04f4ff8aae7a7e3de
+size 6226736
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a2aa130cf7ee5dcaf19c991e22acccf3.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a2aa130cf7ee5dcaf19c991e22acccf3.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..466c7658a4e084f0507845d1c564eebcb41b4582
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a2aa130cf7ee5dcaf19c991e22acccf3.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1162f5f0de38a9fe3ddf32f77489c5a70dc2bca6b8e12ecbd0ba598deac0a86b
+size 6113872
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a2e134e640d82133edeb377772e86fdd.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a2e134e640d82133edeb377772e86fdd.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5b21742fa414c5e5db73c57f4475cbe35267d4dd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a2e134e640d82133edeb377772e86fdd.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ba99343746c4e981a9fd6a2ea676a7636042671d9c9a126adb3ae9ac0cb1b52c
+size 7545311
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a510c5b63116cfa5178c8f08b81c075e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a510c5b63116cfa5178c8f08b81c075e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5363be04ea56400475052e5e530f83549e39ba6a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a510c5b63116cfa5178c8f08b81c075e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c0faea44a19acb56df2ec951622940ff56769bc6944aacb6f0df9bd2c3df7c0a
+size 10089638
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a5dc44a3fbaf0d173a506a42296b31d6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a5dc44a3fbaf0d173a506a42296b31d6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..471f9e77d3441fbf7ab2ca0beb36412c05f1e36b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a5dc44a3fbaf0d173a506a42296b31d6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af961a476a1c3eb7ecaa732aa06ae694b7db52f5b0fee4bb00db6533497b55c6
+size 5641232
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a787fcd8c9094979df5a92a80c8cefd4.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a787fcd8c9094979df5a92a80c8cefd4.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3948b334e503b6f373c344e86fd53e66fc5a372c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a787fcd8c9094979df5a92a80c8cefd4.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:900bf068632e7e134a34a6cf857ecc52474c96c631feb7a1135ffcb65c25dba1
+size 5256190
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a7bad87145617a188ad30e163bab0085.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a7bad87145617a188ad30e163bab0085.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..53098bf6dd14feba59aa8e8606eebd07162a7887
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a7bad87145617a188ad30e163bab0085.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c16b37e8e34d0605ba0f8d39e6d0c2bf4b2b8c5edda0adecde4cabd9bb33fc8
+size 8884586
diff --git a/train-set/81-frames/synthetic-bg-change/composite/a826dcc3b59731201487c4c2186de7af.mp4 b/train-set/81-frames/synthetic-bg-change/composite/a826dcc3b59731201487c4c2186de7af.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f6066c3e5d91b9df05b80c67ff7caeaa5885f64e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/a826dcc3b59731201487c4c2186de7af.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09c50db699db579dfc2c5c8a715cc93c6c0c749e3d9416147d20323f9bbcc167
+size 9335588
diff --git a/train-set/81-frames/synthetic-bg-change/composite/aa0dbb351e751aff0179e3ea190626bf.mp4 b/train-set/81-frames/synthetic-bg-change/composite/aa0dbb351e751aff0179e3ea190626bf.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1b499ad4510a467707fe09f44ea02e0138460518
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/aa0dbb351e751aff0179e3ea190626bf.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32a5401adfb4433389ef10ef0dc72d3dcf14e6a437845ed8fe4f8df5cbb94dbb
+size 7856253
diff --git a/train-set/81-frames/synthetic-bg-change/composite/aae009b13acf36b037aef155ac8233a8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/aae009b13acf36b037aef155ac8233a8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e1cb0e17d30955b6d7f8f75f57fa100aeafbc6b8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/aae009b13acf36b037aef155ac8233a8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:125a73fcc57f9693b11b3d21737480acf36ef440e278c044b11ad4f8635c6b0b
+size 5518096
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ab7953282417baa7f8c9be8a4c41b80c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ab7953282417baa7f8c9be8a4c41b80c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a315cfd8d27abe0222831c55adbc11f471f2b0de
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ab7953282417baa7f8c9be8a4c41b80c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01a2cddfe2f9df95e03edae769c0d2d13d758295c2418532d46b6f75764971e6
+size 6833043
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ac783c6304b4b87ed0f940e11871ce87.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ac783c6304b4b87ed0f940e11871ce87.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..adc68821457210f18e29b4b118002efc83c6a3ed
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ac783c6304b4b87ed0f940e11871ce87.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3870e29f101b4e46e832a70938ea553c93583f79fa984807b5a67443660f4995
+size 5886286
diff --git a/train-set/81-frames/synthetic-bg-change/composite/acf2fee792a700261c7be9db8d4b16a9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/acf2fee792a700261c7be9db8d4b16a9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..be5bba9e8e5d2c455840271e7821a9df084138da
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/acf2fee792a700261c7be9db8d4b16a9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8a495598516889f8697ade387d4dcc475e0c887bee482f2decdafe5bc543c98a
+size 7662418
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ae2c2472668854f50d5ab819b59e7b6d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ae2c2472668854f50d5ab819b59e7b6d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..58ac77f101b3059dad5c1737ca78915a6c705eaa
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ae2c2472668854f50d5ab819b59e7b6d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb3df2ca214a5a9dde880df3a35b7b28aafbb0c67e5eb512a8dd1c68e3ba2743
+size 8013982
diff --git a/train-set/81-frames/synthetic-bg-change/composite/afdf5452fe619404fb6db53f963041a0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/afdf5452fe619404fb6db53f963041a0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9d6d29e7b3db2ae7f35e5b17e1c839064f13dbe2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/afdf5452fe619404fb6db53f963041a0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d0607bd7419f4bdf9c95e59f5e7a1019a92ee46bfd626d40c2880efa51cfc56
+size 5219434
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b1e9ff7f65db2760ec203890111b0255.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b1e9ff7f65db2760ec203890111b0255.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..13c479da9919694acd1f2cb17c482e00c44217bd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b1e9ff7f65db2760ec203890111b0255.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4da4203c75747f6adbae5e8f7d61c72f7e09dc929bd24823e8c4cf8df3ac189b
+size 5484005
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b2e500f14e1b4b56953b9b09731980d3.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b2e500f14e1b4b56953b9b09731980d3.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..07006b0bb57bece986e46a2c978c120ae63ed3f1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b2e500f14e1b4b56953b9b09731980d3.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:474af2e413b3f08bcb36a83368fbc0bb697eea644899debd8e5c6a4d90992789
+size 5811277
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b3613315eafba48f0fabb1c7ed6962d1.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b3613315eafba48f0fabb1c7ed6962d1.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3a1c230a01a14b589be9d70ab291bd2597b3eb59
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b3613315eafba48f0fabb1c7ed6962d1.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c1daf2806f7badd340575c95348d39a32cefc93f5833bea392b142c6d0a7fc19
+size 6672495
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b4518f0a0e445d8d98e41932617c1459.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b4518f0a0e445d8d98e41932617c1459.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f1f0e3f2d08da54a7f30295614e9c5f498ac06d2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b4518f0a0e445d8d98e41932617c1459.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9eefd39e72c72ca55797d544e1299ea2f24e060dc8179fb76484d0c9ee46a839
+size 7865066
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b49b27f01a9df9a9c94f3f4f87de4231.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b49b27f01a9df9a9c94f3f4f87de4231.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6ff78c778f3ffe0ceba18d3e94648809ee7d1090
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b49b27f01a9df9a9c94f3f4f87de4231.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53d395aef7cf17551a452e4e067ebd8b82f9d83ff1ff4fe5d48dccc2e41c691a
+size 8159794
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b5f6cd87f2181e0096d5c106742dd3d2.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b5f6cd87f2181e0096d5c106742dd3d2.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c91d5a1e92b970b0c60aa651e0f1c339961a9dce
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b5f6cd87f2181e0096d5c106742dd3d2.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7ee5addbccd5d93fe54d555afb70009398c857c6455e06f55dbfb8e57920c639
+size 5841539
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b71327f0b3a3945b5c9d9d38b81608ba.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b71327f0b3a3945b5c9d9d38b81608ba.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f9547913112c7e7d92735de66e480ee53567f5e7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b71327f0b3a3945b5c9d9d38b81608ba.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cb4b40f04d4ddf70e8fc87fa7f06cf29dc08fab915dfc36733519c42bebcd02f
+size 6028885
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b7c31fae7e7ee45e5bc74a6f5ebef2e2.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b7c31fae7e7ee45e5bc74a6f5ebef2e2.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e7c00c77287ced822bd706172f951f3dbd3745d2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b7c31fae7e7ee45e5bc74a6f5ebef2e2.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f8b2cd8ecce6d1a0ed6fc279fc588fac49da897a280c3710c6997a72d5f0a2c6
+size 7660461
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b803e8f0604e727b9912532b6b015c62.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b803e8f0604e727b9912532b6b015c62.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7859ca210c14ae559a6d3b4a266ff8b1ea0d97a6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b803e8f0604e727b9912532b6b015c62.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4138bc9af9a22c5826d51e33e2b873959bf45f6f0fc2fe7c67b7cec4282d6a42
+size 5558505
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b80addd0e0bc83114db53578c11902de.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b80addd0e0bc83114db53578c11902de.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9844fb6b70f4c1efa2e14881f80e86e9795e89d7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b80addd0e0bc83114db53578c11902de.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a712205c27aad7c3c4f8ef0bfc1d846a7e362521db96d48b647b961dbace756e
+size 9681859
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b84f109604f683f376d28c2c1dcfc398.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b84f109604f683f376d28c2c1dcfc398.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..17daa7047e0ea4adf6b819bf5bf8e2f584a198f6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b84f109604f683f376d28c2c1dcfc398.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f31da1b906e4d7acc3c7f3ae6d5a8a0f3d83ee0885d1db1f0094c02e3d53f80e
+size 7270350
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b8d2f2be4dd4fcee8fcbd0d8380c9009.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b8d2f2be4dd4fcee8fcbd0d8380c9009.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d9d07745346d5cc87ae4f90c03d0a32d053d346e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b8d2f2be4dd4fcee8fcbd0d8380c9009.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:73e57c359dda900756e5eda93e0b2c56c2ccabd446bb4bc204025d4171c04089
+size 6759672
diff --git a/train-set/81-frames/synthetic-bg-change/composite/b94a69ee71803d50e37620a284c98ed2.mp4 b/train-set/81-frames/synthetic-bg-change/composite/b94a69ee71803d50e37620a284c98ed2.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6a740891d046d7b551a2fc906dd462f71dd5c1aa
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/b94a69ee71803d50e37620a284c98ed2.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:11971fd934eb9d86736406bb259857866f870e37d5c5f66b33620938c1f185ca
+size 5062072
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ba30b9f5f1f302cc574a0b2310969a47.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ba30b9f5f1f302cc574a0b2310969a47.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f16104a2791f027a213636f8aded99097424630a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ba30b9f5f1f302cc574a0b2310969a47.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e07d40d367e0fbccc607ef2dcdadc4b4b82b4c76998721fb3974d17f19ebc152
+size 4473643
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bb3a847823283b1d6b14105a17de9d2f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bb3a847823283b1d6b14105a17de9d2f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..792a1630f948adf5c3ca1fdab61b7e408f797bb1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bb3a847823283b1d6b14105a17de9d2f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6e46cb90b128af6a96295f6833ad430732f1c1f42233ea9369f8d2a99cb69822
+size 6599912
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bb8dea3a0206ce30db10f01cb0bfa983.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bb8dea3a0206ce30db10f01cb0bfa983.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f76c99079ec2daaa7dc81bcd3396c69d991b1d06
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bb8dea3a0206ce30db10f01cb0bfa983.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd0e82c386740dc108a7b1366911e924fa9409a6514477d960269168938b735f
+size 7661689
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bbbebc9181e0f1f0fd5e6654ea52b3d9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bbbebc9181e0f1f0fd5e6654ea52b3d9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0f359bf8b431fc7fcf8fae4bb52faa13c89244c7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bbbebc9181e0f1f0fd5e6654ea52b3d9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b53467332b4f2e023aee811fd9ce736728cb12983c589f33c1a46942f5b03453
+size 8538295
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bc2fef7e8de523a78db3dfb87479c478.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bc2fef7e8de523a78db3dfb87479c478.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8695c104c0ac60f75a7f7a67f2aff5fb1940d2a4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bc2fef7e8de523a78db3dfb87479c478.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef4d5f6c5a7f05577b733975089316e2ff1b2fbc784716ab5b3b3e008af18fd2
+size 7988025
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bd9c9ccdd9d2965682e6278c666cbb9c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bd9c9ccdd9d2965682e6278c666cbb9c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f91a2e6e409e8195deb8d2030711ef0a5d7c1493
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bd9c9ccdd9d2965682e6278c666cbb9c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd8e6f2ea3c68e98189ca2941a209fa7d6f4c318a2cca10cbb228cd9a68cec10
+size 7187587
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bdc2568dfc5450d97cb30b4e79a3bb8e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bdc2568dfc5450d97cb30b4e79a3bb8e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..53883e648ba29aef0e50f520e63b9a104dca913a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bdc2568dfc5450d97cb30b4e79a3bb8e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b5d106da16464c51854fe56226fc52c2880b105ba3520e63d75109c38a663941
+size 7417256
diff --git a/train-set/81-frames/synthetic-bg-change/composite/be6a29e82a1328778ea95a95478efae7.mp4 b/train-set/81-frames/synthetic-bg-change/composite/be6a29e82a1328778ea95a95478efae7.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..434aca2614e31129cef6ef599ae28be763e40af9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/be6a29e82a1328778ea95a95478efae7.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9022839f42e589bec75c66bc368f8044a94e0b7285bd938d8842d3b472dab00d
+size 6876158
diff --git a/train-set/81-frames/synthetic-bg-change/composite/bf9b279af6e4af65b39d1176cdf94f5b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/bf9b279af6e4af65b39d1176cdf94f5b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0548e12f8958de8382e84b14504f8eb8748698fd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/bf9b279af6e4af65b39d1176cdf94f5b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e4a929a1b44cf4da22f57e945f3c35bfbbc6a8e604bfae8cde36a84579853815
+size 6997006
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c02ea50198c0cb3be6a855a286094b2d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c02ea50198c0cb3be6a855a286094b2d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..62f47861cc2843534a7250152feb7749ba4451c3
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c02ea50198c0cb3be6a855a286094b2d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f960b9ce4a5dc4c54e4953544222e2b5893d72e092c424074885c65dc0ae34db
+size 6203405
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c14d6a943c61bb44b875e8df4a230022.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c14d6a943c61bb44b875e8df4a230022.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8b61588c20353a0622f01b129a17c53bc8c0f18f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c14d6a943c61bb44b875e8df4a230022.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46f03a093587e8514e5247e8a7a5290839277bcd81812596ce29b3a1142dab33
+size 8375952
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c19724754e6ba950de4177b0487f655f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c19724754e6ba950de4177b0487f655f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a42e6994098386592d242a5d6cb20e09ca3227bd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c19724754e6ba950de4177b0487f655f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a35c264062dcb25c5e9d6e0a27d757083ccea220e36fd5d8d887495b08c63645
+size 5660286
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c301230b9da7003b1fb47b9156fd94b6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c301230b9da7003b1fb47b9156fd94b6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d9ac92e59fd1c2aee38762ffdd5f7b9d84e84a01
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c301230b9da7003b1fb47b9156fd94b6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1fc3012c1fc2c2dc02006cc0af4b797f967e98698e43fd590f99ac0ad9178a10
+size 5308122
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c373d3c53d5678a92649f6e849802c27.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c373d3c53d5678a92649f6e849802c27.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..15d2f5addbc700447ed582db7bb22325105312cc
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c373d3c53d5678a92649f6e849802c27.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:efdf7bcd22a1328802781279922eb4559ec44e6080367d7ed6f31964c665163c
+size 6513521
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c3ae81b2613f105a6789ebbc560540e0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c3ae81b2613f105a6789ebbc560540e0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..40fe046cb3b2f3c1308e77ff70d8cb2b0700ad7a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c3ae81b2613f105a6789ebbc560540e0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46aca709382efd20cac433bfe26c512b09cdaec1a3a325144bd0a05195fe2188
+size 8563670
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c5779d911a7f3aee21e16ca69b0657fd.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c5779d911a7f3aee21e16ca69b0657fd.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f8416df95701c73be3b8f1941945234a969959c5
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c5779d911a7f3aee21e16ca69b0657fd.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8d3ae63e557f3f8a7a4a55df8e67c05cfe333b6de5bfd8da29ca81bc500364e4
+size 5986213
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c7ac67b6310bee0609633b27f6012868.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c7ac67b6310bee0609633b27f6012868.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..398464c932670060b1f25fd22fdf873d528f73a9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c7ac67b6310bee0609633b27f6012868.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e81c12fc08f57770f24638067c90cc755810a51775ad26a9ca52297a7b01df3d
+size 6578349
diff --git a/train-set/81-frames/synthetic-bg-change/composite/c9703a99aaaabb53d2db3f2e6bbc0eff.mp4 b/train-set/81-frames/synthetic-bg-change/composite/c9703a99aaaabb53d2db3f2e6bbc0eff.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ae5dd2dff2d1425be201487e5c9ce2280db767ef
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/c9703a99aaaabb53d2db3f2e6bbc0eff.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09f504c586891f1d05f847e0a69922853517b4435777765b08519c0ae68cf3cd
+size 9492663
diff --git a/train-set/81-frames/synthetic-bg-change/composite/cad81a63d04102dd2b94cb7b104b599f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/cad81a63d04102dd2b94cb7b104b599f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6511ec868b1cc3f341eccf747d955c4fd89b445a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/cad81a63d04102dd2b94cb7b104b599f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a28fdcd10b0c4de2141239fbfa6f49fbfbd5f2390dd43781bc6a0a928e098f60
+size 6328026
diff --git a/train-set/81-frames/synthetic-bg-change/composite/cb81461457663e4f4899022757431759.mp4 b/train-set/81-frames/synthetic-bg-change/composite/cb81461457663e4f4899022757431759.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e7a232dbc9d5996a7dbf854cb2e407d9b257b871
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/cb81461457663e4f4899022757431759.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eb17a7d14b940f6d7f493fa4c7b5912c33477408e5ac93ae52d5ab311c637b5c
+size 6096197
diff --git a/train-set/81-frames/synthetic-bg-change/composite/cbd36c8de24ec91a6060ebd29fe035e8.mp4 b/train-set/81-frames/synthetic-bg-change/composite/cbd36c8de24ec91a6060ebd29fe035e8.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..227499aa2872ec04370cb85ca9d9b28ab19413fa
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/cbd36c8de24ec91a6060ebd29fe035e8.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b78177cc3e01a9c886e0c276b6a92bcc92f39cc27fcd75cab3a477abd0a71b7
+size 5526680
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ce37b5540ca3d5d81d603f2459fd18c6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ce37b5540ca3d5d81d603f2459fd18c6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..91547256b8b11cfc88cbd0e4725132b4e76597f2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ce37b5540ca3d5d81d603f2459fd18c6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:515027fb0d88466d9d1b03da0f37b35076ac97b06e11dc2891e8e295708e9940
+size 5641934
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ceab0370cec2c24483eccd49b5a791e2.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ceab0370cec2c24483eccd49b5a791e2.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..9ff44fd46e01e1611af43541367865e7124b9bb2
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ceab0370cec2c24483eccd49b5a791e2.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2630f752901b27460a0de46c7e307f0bbdc4bc7a6820cc3471a01c301765afed
+size 6238496
diff --git a/train-set/81-frames/synthetic-bg-change/composite/cf0edaf8b42f26729a806cbaca76de1c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/cf0edaf8b42f26729a806cbaca76de1c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..365b7a04f5d5b0e7fbd79bcb9dcde573a65052a9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/cf0edaf8b42f26729a806cbaca76de1c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b4604d818bd094d7cb46412bd98f58a250deab589df36f552e10c446cccb13f1
+size 6728235
diff --git a/train-set/81-frames/synthetic-bg-change/composite/cf6513411a6b30bf8bd392241f36bcc6.mp4 b/train-set/81-frames/synthetic-bg-change/composite/cf6513411a6b30bf8bd392241f36bcc6.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..56abd3ef297d5baf652bd6ef8fab06a99fb433f5
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/cf6513411a6b30bf8bd392241f36bcc6.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee156b8b3eab181b0e9c89c1de03575c04d85613bbac3cb3a459b43e67f812bb
+size 7241527
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d13f038f958946d98c2584a8145117b5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d13f038f958946d98c2584a8145117b5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2b51a2710d59c3fc87f44572b96971d5c6472acd
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d13f038f958946d98c2584a8145117b5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ac5357be9e73b8717d5e3b2e5a46bc40443ece86334a2a15da19c63adfb8aad0
+size 6063076
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d19a0fc382e0053b84caf4277fe8e727.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d19a0fc382e0053b84caf4277fe8e727.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f47f26a33291277abcbc0b50f65477bea548e700
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d19a0fc382e0053b84caf4277fe8e727.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:806c3a72da8be68d7d511f3ef396dd8244286480ac4e14f4e37e32d5455df508
+size 9235049
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d378d12287e0483a10234e37a87d3418.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d378d12287e0483a10234e37a87d3418.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3b043aaeefecacde95f2e120be737a14fb5906b0
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d378d12287e0483a10234e37a87d3418.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eb434bcb2ed2fe9c6a1424ae81622f65f553b5e6b06c3a32e7609e9d77fdb388
+size 7629574
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d59b706209422f8ea55ff01bfce0a67e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d59b706209422f8ea55ff01bfce0a67e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..f426899e3ff51bb5a106a314aa5fc99baa4fecf9
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d59b706209422f8ea55ff01bfce0a67e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5e87812bb05d51de068ed62b158a7b1427dcb5528c6debb72aeacd0468a3f320
+size 7884236
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d61f45d3e9d7416f76f6c2d5241081c9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d61f45d3e9d7416f76f6c2d5241081c9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..313d93d65fa2db05a8ca0a3bdf34ee96c93110d7
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d61f45d3e9d7416f76f6c2d5241081c9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d9bc82b763582e2f3c2e12c74365c588c092009105bcac7e78f80b0d74d1a3ec
+size 12853405
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d68109a14d7c2802c4022fcad560500e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d68109a14d7c2802c4022fcad560500e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1628bbc9823696a567c0c1954015fdcbc297be87
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d68109a14d7c2802c4022fcad560500e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89dfeeabc8773d3c4fcdf1cd2ca9b91e0d0d0580d336f5d47b286ac2dea1933b
+size 5425412
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d77c81d5d8bc514e0e1523624a510621.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d77c81d5d8bc514e0e1523624a510621.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ab84c0d1e7eb1ba011099d5d497b961f1a6341b6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d77c81d5d8bc514e0e1523624a510621.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:502e6d30fd65b943f348b81dc3257cd599442b366c124cc65f84d0ebcae2a9b5
+size 6840330
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d93064bdd04a33936ac837dcb4212a24.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d93064bdd04a33936ac837dcb4212a24.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..d17d585ca7177973e292745b5dde769db7bfe307
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d93064bdd04a33936ac837dcb4212a24.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84a83e8511c3bfa03dab365f873fa670cac1becb45bea54a92240266cff086a4
+size 4803279
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d93f4c72129d74cb5ccb9d7bfac0335a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d93f4c72129d74cb5ccb9d7bfac0335a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..11507eea5fc7ea2bbd7c2a129e8bc46225c461d8
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d93f4c72129d74cb5ccb9d7bfac0335a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f4ac309402e626df3496d194f7fc6e8a766ab7954627b0a7b6b0d19129ba2028
+size 6182583
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d9514a52667781b0e14e1ee2fdf3c97d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d9514a52667781b0e14e1ee2fdf3c97d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..54ed37d3d939475f5512a78076896b4f408eb506
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d9514a52667781b0e14e1ee2fdf3c97d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e9f329f914b53efea7b1cbfc1f0071bfad697847a380962183e7a2732b71f790
+size 6568038
diff --git a/train-set/81-frames/synthetic-bg-change/composite/d9794d112203a2d09db283517e690149.mp4 b/train-set/81-frames/synthetic-bg-change/composite/d9794d112203a2d09db283517e690149.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..5aac3a48538947238a21e7ed16b691d7dfe03999
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/d9794d112203a2d09db283517e690149.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c679a14ca559030794abe04206225a5778200e7e74b699b0987378f08e1af047
+size 6261287
diff --git a/train-set/81-frames/synthetic-bg-change/composite/da5f61cebefb0c112ab3dee2c276c8b5.mp4 b/train-set/81-frames/synthetic-bg-change/composite/da5f61cebefb0c112ab3dee2c276c8b5.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..475c4ce7b405526db8b15e5eb83c485e58107105
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/da5f61cebefb0c112ab3dee2c276c8b5.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a45113b12ea4d9827fbb3517d397415941cb827c3cb8e2343e67de89b885e352
+size 8189697
diff --git a/train-set/81-frames/synthetic-bg-change/composite/dbb636458806e83b2f56af83b12ae7ed.mp4 b/train-set/81-frames/synthetic-bg-change/composite/dbb636458806e83b2f56af83b12ae7ed.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..166015b551f48471a78bebaccc28ee4e0ce71b9f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/dbb636458806e83b2f56af83b12ae7ed.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1a573d154b22b04391327ba9f9a045e9d87219f911c8cfd7a25a78e812e6939c
+size 7193139
diff --git a/train-set/81-frames/synthetic-bg-change/composite/dc8653ef4b15eb02ab440d9664d4a8bd.mp4 b/train-set/81-frames/synthetic-bg-change/composite/dc8653ef4b15eb02ab440d9664d4a8bd.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..13a0e1bd787d2f5ba77a80e53fdc09fc3ee8c813
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/dc8653ef4b15eb02ab440d9664d4a8bd.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:06e6ddfc321b0032602cb008119932be9161563cbc937b0deb32bf0aa1f32847
+size 6145853
diff --git a/train-set/81-frames/synthetic-bg-change/composite/dde412e8491bec0229203b78df100911.mp4 b/train-set/81-frames/synthetic-bg-change/composite/dde412e8491bec0229203b78df100911.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e5c6c068c23f2fed4db9a88ab10385e9d9a4579a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/dde412e8491bec0229203b78df100911.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9b417c371440d4953b73e9761b57159330c909e999a796e3f36d36784ba6feb0
+size 7602745
diff --git a/train-set/81-frames/synthetic-bg-change/composite/de659070ef1a93b96373db92d197f72c.mp4 b/train-set/81-frames/synthetic-bg-change/composite/de659070ef1a93b96373db92d197f72c.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..595fa6510f811e2000b874feeea8cbb7d7382dc4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/de659070ef1a93b96373db92d197f72c.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d20e0e637d5b66780d8eeb81fba1afae410e8cbc8f7207d9289890dcef3362c7
+size 10494539
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e12b3b2d09af95dbedd33bafe057d54b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e12b3b2d09af95dbedd33bafe057d54b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..09f3447d0e84d84a0c9d5a618f2999067502c651
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e12b3b2d09af95dbedd33bafe057d54b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7d85cfe13373e7e61d0823cf8cfe5cbd5eda2bcf3b5d7015ac157b3599a45b69
+size 4886249
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e22dfac8a0fd15e01bd86d9fa6c1f408.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e22dfac8a0fd15e01bd86d9fa6c1f408.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..e9022067dd73faab182d0031c8f053c11a006724
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e22dfac8a0fd15e01bd86d9fa6c1f408.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8050d262697be60f71374151c356a4c9cd7794af908919aa78bcf0cb32435c8e
+size 7180862
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e4239cddc2559ac6719ff77f3e4d3b5d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e4239cddc2559ac6719ff77f3e4d3b5d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..38250b880d3286d0831c427b926f4749cc1b654f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e4239cddc2559ac6719ff77f3e4d3b5d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d63f6093101dc475f8b7ac908937b6d8ecdb18f3fa56f13ff71a23eb8a5d37d
+size 5715753
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e4a303ea5af4cca3afe6d741e0a21e7d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e4a303ea5af4cca3afe6d741e0a21e7d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..548c00bd6cb706017632a21c8ea0b3132f51bafa
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e4a303ea5af4cca3afe6d741e0a21e7d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19e3fb2fc39fc8ca2fa9681f0c8720ca632c5cbce36d81cc5b8f53c360ef4a33
+size 5840246
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e511276066f55401db184df236f827ca.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e511276066f55401db184df236f827ca.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a3257b5e21f79cd7f3642f9524b92c526fe9fd64
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e511276066f55401db184df236f827ca.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d32d2ec7ea4e004493ec46da5e2f05c68623279f4214bdf6e7722cc3d7405d1
+size 4809553
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e52532ec57f0dfb06eff978cf1cbc2f4.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e52532ec57f0dfb06eff978cf1cbc2f4.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3c34d3f4a40bb9f9dd547877b9a492801e65828a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e52532ec57f0dfb06eff978cf1cbc2f4.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:31e5a4d21b406d6c692ee43495cbba758d9deed68a02a39f7faeb50b065ba7a1
+size 8002214
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e53b2e744273192e949bf4f2e021c10b.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e53b2e744273192e949bf4f2e021c10b.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3019b5ad7ed2129c468611480a86973c0094128e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e53b2e744273192e949bf4f2e021c10b.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:731c7c8649b249bad08ddf2cad1884fd8b3a1d4635657c7bf9c53155dcdccca1
+size 8231098
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e54c1ebe081f65a1858d6f3ec7773f24.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e54c1ebe081f65a1858d6f3ec7773f24.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..bf172c1264341da38ce9af1fc22abeae063c884a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e54c1ebe081f65a1858d6f3ec7773f24.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7b669c0d5298ea10e8330b978b1be8f6005b8293f77d8b36bcc4aa467445cf17
+size 7578201
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e5e45f28cfd84c377c02dda433a2f756.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e5e45f28cfd84c377c02dda433a2f756.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ea550280fd2be2c9f0059d59fa2bf619f28947ff
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e5e45f28cfd84c377c02dda433a2f756.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:63739bb2ac9ec84209ce5a4a7a52060c617aa16fc43afff06a745b69ba43f97c
+size 6067888
diff --git a/train-set/81-frames/synthetic-bg-change/composite/e7e479164718d01b9e33bb05049a72aa.mp4 b/train-set/81-frames/synthetic-bg-change/composite/e7e479164718d01b9e33bb05049a72aa.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6594b0038d64d54c377e9884ddab4a1e6cbf6b5c
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/e7e479164718d01b9e33bb05049a72aa.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c750718aa0ed0693db966cc7309bff9ebc8e34357dd0cb8fc1a84f02d665280a
+size 6016921
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ead3f0e5a8e19cf7a0557d5bff729fbd.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ead3f0e5a8e19cf7a0557d5bff729fbd.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..87b300d0d5de1195285bbbb67efee579bebd7488
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ead3f0e5a8e19cf7a0557d5bff729fbd.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1e0d1dc3eaf70e51e3ac277721dc839ad8bd01020c064842f95d2107fa9afc9e
+size 8072364
diff --git a/train-set/81-frames/synthetic-bg-change/composite/ee040ef1bc682d7c59c78d9fbcfcfd34.mp4 b/train-set/81-frames/synthetic-bg-change/composite/ee040ef1bc682d7c59c78d9fbcfcfd34.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2e564424f2cf5bf16adca14778b2a6b8ed44c3a6
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/ee040ef1bc682d7c59c78d9fbcfcfd34.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4f4358f2bddfca9dd8557e0d2188217ccd64972727ba7666ce4d1a97f8c1e213
+size 6228090
diff --git a/train-set/81-frames/synthetic-bg-change/composite/eeba6961e5c33fd90b616ef7bea98e95.mp4 b/train-set/81-frames/synthetic-bg-change/composite/eeba6961e5c33fd90b616ef7bea98e95.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..3ceae0106c6bde472155c99d83702eb2d68203fc
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/eeba6961e5c33fd90b616ef7bea98e95.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0a1151701690e83b19a33e0293f0d894cf72fb07da5c4ebefada3a2795ca0de7
+size 5349062
diff --git a/train-set/81-frames/synthetic-bg-change/composite/eee2853bef42a2aa072fa1d48e3a7fa2.mp4 b/train-set/81-frames/synthetic-bg-change/composite/eee2853bef42a2aa072fa1d48e3a7fa2.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..732dca055a090bfdb556a58e45df92921421b988
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/eee2853bef42a2aa072fa1d48e3a7fa2.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d5afd21d3b19e11ad1e206a765e18d5175ebbaf042bb7eaab00fecee73f1c6df
+size 7358791
diff --git a/train-set/81-frames/synthetic-bg-change/composite/efcf2666ee9147f56fd5c3a47d8bb7f0.mp4 b/train-set/81-frames/synthetic-bg-change/composite/efcf2666ee9147f56fd5c3a47d8bb7f0.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..52a405352df3d36feb50d948f1db0a066dd8f14e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/efcf2666ee9147f56fd5c3a47d8bb7f0.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:dc6156ed4f2f42683d9efdc7b6a580f690a6a8ef103f0eaaa9ccc578c9a4f3a9
+size 6587507
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f011ac837dfe2a87a49a2cbfe4b5ab2f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f011ac837dfe2a87a49a2cbfe4b5ab2f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..52fbdd91873cdac3898c13e89492452069d9cd68
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f011ac837dfe2a87a49a2cbfe4b5ab2f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:67922663b4b13f256a3885f5f0a82af73545e68defeb619177cbb544ae2fbfb0
+size 6599631
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f1988fcafe816a828a817ce8d59ae20a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f1988fcafe816a828a817ce8d59ae20a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4c975e4256d1508aca7b0ae3e90327c1b694dedb
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f1988fcafe816a828a817ce8d59ae20a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89830b83217c579810e8c58dc37eda5136536147b6a359f6d46a8a74e292ffa0
+size 6548871
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f2c008a79eb4a4753e50a93700517680.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f2c008a79eb4a4753e50a93700517680.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..b72cb7e132d639b425b01da6e2de21ab5dc75f9f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f2c008a79eb4a4753e50a93700517680.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:46280fe442670b5a26bc237ebdf0095a50c2669b38b67b151fcbcd177bde5d91
+size 5133232
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f30f0f0af71dab6b3ef4ad165bb2581a.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f30f0f0af71dab6b3ef4ad165bb2581a.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6e42bfb8ac3698f56b5d680fa6e89fbf8042cc05
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f30f0f0af71dab6b3ef4ad165bb2581a.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c814e669061ff87048a4f8c189d59d26776e181fee499356245180e8f2c3b64
+size 6089589
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f3cfe25d7f1094470dcf0726447ccc3d.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f3cfe25d7f1094470dcf0726447ccc3d.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..c6beea11643bebe5bec815207c2865ea903dee1e
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f3cfe25d7f1094470dcf0726447ccc3d.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b65446f55fb25d97176df5be8f786058943a92c2097dce7c22ad5ddac15e584
+size 5836361
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f42cb70244233a510a51e0128d893856.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f42cb70244233a510a51e0128d893856.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..4048477bb15183659f586c1d1c8f6b318265095a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f42cb70244233a510a51e0128d893856.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4f815f9467a4cafbbae54d02a9252fb49ee96c3e30a7ec92ae2380ef1f141942
+size 8371894
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f4408a306a6203e14f3c472142420a0e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f4408a306a6203e14f3c472142420a0e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..53930cd1bfd22c0a520badbe3942721781317a94
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f4408a306a6203e14f3c472142420a0e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d4994fbbf7fe4356574790dfd4afd62cbf2108e096a45a209005132a9220018a
+size 7704252
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f509ee86cb1d3343f40db6d763036a81.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f509ee86cb1d3343f40db6d763036a81.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a3365aa6b7f7bfdabf6085b7d914d1b41a2bd625
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f509ee86cb1d3343f40db6d763036a81.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:48f049a61fbba0a4ef99aca5b456ea0cec7defc1aecca76efe1d13e7b6f3c215
+size 7574986
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f5a6c8af85ed809af9d4ff2ffcb86c82.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f5a6c8af85ed809af9d4ff2ffcb86c82.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..1d65f9b28289140b2777c4897c40818a08c98e7b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f5a6c8af85ed809af9d4ff2ffcb86c82.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:194f90a57ecb75be9733fdfd54e3054ddeb010a0bcf12cf31abbff64e8802583
+size 5470732
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f6222c4addcd95ed36f3816a9bbd9e52.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f6222c4addcd95ed36f3816a9bbd9e52.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..0f272845c7510d74ea8103f75f9aa59aaa64d477
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f6222c4addcd95ed36f3816a9bbd9e52.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ae258e88b18cd600900310e4dff929d1618893d68b516ab2fa7f4139150c3766
+size 9544913
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f66d9f801847c3a6d62bbe3118501a46.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f66d9f801847c3a6d62bbe3118501a46.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..acc7c6f9053053acf64851496d5f399828e4eed4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f66d9f801847c3a6d62bbe3118501a46.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:75111cfb28b2e303bbf3b54e0f4c171fca0f6dd3f12651705e5eb169a66d50cf
+size 5334583
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f66ef447b3a07fb61ef53141849c3c22.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f66ef447b3a07fb61ef53141849c3c22.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ac40589843e44e0b36ddee1149c9ba959438a04b
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f66ef447b3a07fb61ef53141849c3c22.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19ce1c626ff5f7a4811e5358a5e5f1bfa4d771e5e07c0be87a2a876cb7f7302c
+size 5921413
diff --git a/train-set/81-frames/synthetic-bg-change/composite/f7aeb3fc70a089f152f0a596ce58eca3.mp4 b/train-set/81-frames/synthetic-bg-change/composite/f7aeb3fc70a089f152f0a596ce58eca3.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..6411dedb51bb1f8f6f4aab9a24feaea9bf5b31d3
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/f7aeb3fc70a089f152f0a596ce58eca3.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:198a0ef096e73290a670e8ff4122a80d783ad5ca4bba6641fb31bab88f7ae980
+size 10479720
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fa8161d5850220d496379a72ae71913f.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fa8161d5850220d496379a72ae71913f.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..2f8e07237da14846c88ebbf0379d28240368060a
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fa8161d5850220d496379a72ae71913f.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5279c8b3d9caa1f72ff7e1eee04fece317c18a8563cb458e874bdeda17070323
+size 6541018
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fae6f2d6c9f4a20aab0446733256157e.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fae6f2d6c9f4a20aab0446733256157e.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..00f33a27061325973f630150490b5616fa4031d1
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fae6f2d6c9f4a20aab0446733256157e.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:af60cda54dbe077545551323566420004d7d1e204d5a19f33a361bd128c5da9d
+size 8433882
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fb9f74ccd498721d973741efc86b6731.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fb9f74ccd498721d973741efc86b6731.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..7149d286ba9a61a505454dfe87ffb516b6a05e1f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fb9f74ccd498721d973741efc86b6731.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f65582fcb311d0f1dd04eb5ed98f016ea4a9550d4b0f8e74be2b442feb64b0d8
+size 6743297
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fc37a1c6b8a5e2bfdf6028c4169640a9.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fc37a1c6b8a5e2bfdf6028c4169640a9.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..a296a440e4c6cb99f2ef44a9564a2dab0b0f4f0f
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fc37a1c6b8a5e2bfdf6028c4169640a9.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2e9f9982a9e43d99eb33eba399eb353d01e5b9c31e5684ac3810b8749bc2b621
+size 6093952
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fd7a114b3d07d5814d9c5427492b0617.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fd7a114b3d07d5814d9c5427492b0617.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..ac7158c1f5bd2ce08bcc9c009d30dd41aef781c4
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fd7a114b3d07d5814d9c5427492b0617.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8dc28eec6e586d3b3d98f493f83b2fa4780de32623a3518ac32ae0696bbbf045
+size 4661754
diff --git a/train-set/81-frames/synthetic-bg-change/composite/fdd46406b3b4202cb4ee829577489d77.mp4 b/train-set/81-frames/synthetic-bg-change/composite/fdd46406b3b4202cb4ee829577489d77.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..8d20953554da5ec6c623b3111909a683a302de16
--- /dev/null
+++ b/train-set/81-frames/synthetic-bg-change/composite/fdd46406b3b4202cb4ee829577489d77.mp4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f6a4cbd6ab274c59907b66dd79f1b824b9fdb97b61b27f6554989c570be6a49d
+size 6746565