{ "id": "394ed254-7306-42a2-9ae6-aa880ce4456d", "revision": 0, "last_node_id": 5591, "last_link_id": 13869, "nodes": [ { "id": 5532, "type": "MarkdownNote", "pos": [ -1275.4601198544997, 3058.283422746538 ], "size": [ 523.0556530433919, 88 ], "flags": { "collapsed": false }, "order": 0, "mode": 0, "inputs": [], "outputs": [], "title": "Save video", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Save video\n\nThis is you output preview šŸŽ‰šŸ„³" ], "color": "#432", "bgcolor": "#653" }, { "id": 5527, "type": "MarkdownNote", "pos": [ -3592.570577768467, 2843.283422746538 ], "size": [ 902.2025827135853, 282 ], "flags": { "collapsed": false }, "order": 1, "mode": 0, "inputs": [], "outputs": [], "title": "Inputs", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Inputs\n\nEverything here is optional.\n\n### Prompt\n\nEnter a positive prompt. To rewrite it into a fuller description first, enable\n**enhance positive prompt** on the Input Parameters node below. The negative\nprompt is used as written and is never enhanced.\n\nSupplying an **LTX API key** encodes and enhances the prompt through the API\ninstead of locally, which saves memory. The workflow switches over on its own\nwhenever a key is present - there is nothing to un-bypass.\n\nSee the [prompting guide](https://docs.ltx.io/open-source-model/usage-guides/prompting-guide).\n\n### Image input\n\nCondition the video to open on a still by loading an image and enabling\n**use image input** on the Input Parameters node.\n\n### Frame rate and duration\n\nSet both below. The frame count has to be 1 + a multiple of 8, so the duration\nactually used is worked out from the fps and the duration you ask for, and may\ncome out slightly different." ], "color": "#432", "bgcolor": "#653" }, { "id": 5528, "type": "MarkdownNote", "pos": [ -2573.9592793216225, 2959.283422746538 ], "size": [ 266.73809728007427, 166 ], "flags": { "collapsed": false }, "order": 2, "mode": 0, "inputs": [], "outputs": [], "title": "Preprocess", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Preprocess\n\n**Video dimensions**\n\nadjust video width and video height to determine the output dimensions.\n\n\n**Image conditioning**\n\nAdjust img_strength and img_compression to change the strength of the input image in case you provided one. " ], "color": "#432", "bgcolor": "#653" }, { "id": 5529, "type": "MarkdownNote", "pos": [ -2167.221182041548, 3015.283422746538 ], "size": [ 305.4220901853274, 110 ], "flags": { "collapsed": false }, "order": 3, "mode": 0, "inputs": [], "outputs": [], "title": "Generate", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Generate\n\n**Sampler - Distilled (8 steps)**\n\nThis takes the distilled ltx-2.5 model and runs the diffusion in 8 steps. You can change the noise seed, the guider cfg (used for both video and audio) and select the sampler. " ], "color": "#432", "bgcolor": "#653" }, { "id": 5531, "type": "MarkdownNote", "pos": [ -1722.2628423791107, 2872.283422746538 ], "size": [ 406.802722524611, 253 ], "flags": { "collapsed": false }, "order": 4, "mode": 0, "inputs": [], "outputs": [], "title": "Decode", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Decode\n\nMake sure to adjust the number of tiles and overlap to fit your hardware.\n(fewer tiles will result in faster execution, but will require more memory).\n\n### Recommended settings\n\n| node settings (pixels) | resolved latent geometry |\n| ------------------------------------------ | ------------------------------- |\n| `512 / 64 / 128 / 32` | 16Ɨ16, ov 2 | 16f, ov 4 |\n| `768 / 192 / 128 / 32` | 24Ɨ24, ov 6 | 16f, ov 4 |\n| `1024 / 256 / 128 / 48` | 32Ɨ32, ov 8 | 16f, ov 6 |\n| `1536 / 384 / 192 / 48` | 48Ɨ48, ov 12 | 24f, ov 6 |\n| `768 / 192 / spatial-only` | 24Ɨ24, ov 6 | no temporal split |" ], "color": "#432", "bgcolor": "#653" }, { "id": 5509, "type": "PrimitiveStringMultiline", "pos": [ -3566.570577768467, 3449.228800307116 ], "size": [ 343.59614112612917, 109.43487405985934 ], "flags": {}, "order": 5, "mode": 0, "inputs": [], "outputs": [ { "name": "STRING", "type": "STRING", "links": [ 13631 ] } ], "title": "Prompt (negative)", "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "Node name for S&R": "PrimitiveStringMultiline", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "" ], "color": "#322", "bgcolor": "#533" }, { "id": 5511, "type": "PrimitiveFloat", "pos": [ -3566.570577768467, 3964.9068587458983 ], "size": [ 343.59614112612917, 58 ], "flags": {}, "order": 6, "mode": 0, "inputs": [], "outputs": [ { "name": "FLOAT", "type": "FLOAT", "links": [ 13633 ] } ], "title": "fps (frames per second)", "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "Node name for S&R": "PrimitiveFloat", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ 24 ], "color": "#2a363b", "bgcolor": "#3f5159" }, { "id": 5544, "type": "PreviewAny", "pos": [ -3128.841341594478, 3953.1701343986797 ], "size": [ 407.5146365057376, 257.9423935704458 ], "flags": {}, "order": 16, "mode": 0, "inputs": [ { "name": "source", "type": "*", "link": 13793 } ], "outputs": [ { "name": "STRING", "type": "STRING", "links": [] } ], "title": "Effective positive prompt (enhanced if enabled)", "properties": { "cnr_id": "comfy-core", "ver": "0.32.0", "Node name for S&R": "PreviewAny", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [], "color": "#232", "bgcolor": "#353" }, { "id": 5526, "type": "MarkdownNote", "pos": [ -4275.006799291982, 2674.8216296166775 ], "size": [ 572.0432764912434, 505.7812011448118 ], "flags": { "collapsed": false }, "order": 7, "mode": 0, "inputs": [], "outputs": [], "title": "Model Links", "properties": { "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "## Model Links\n\n**LTX-2.5 Model Weights**\n\nMake sure to click the \"Agree and Access\" button the first time you download.\n\n- [ Distilled model - ltx-2.5-22b-distilled-transformer-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/diffusion_models/ltx-2.5-22b-distilled-transformer-bf16.safetensors)\n\n- [ Audio VAE - ltx-2.5-audio-vae-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-audio-vae-bf16.safetensors)\n\n- Video VAE - one of these:\n - [ Diffusion decoder ltx-2.5-video-vae-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-video-vae-bf16.safetensors) - Best quality\n - [ Convolutional decoder - ltx-2.5-video-vae-conv-bf16.safetensors ](https://huggingface.co/Lightricks/LTX-2.5/blob/main/vae/ltx-2.5-video-vae-conv-bf16.safetensors) - Lower memory & faster\n\n\n**Text Encoder - finetuned for LTX-2.5**\n- [gemma4-12b-with-proj-ltx-2.5-bf16.safetensors](https://huggingface.co/Lightricks/LTX-2.5/blob/main/text_encoders/gemma4-12b-with-proj-ltx-2.5-bf16.safetensors)\n\n**Text Enhancer**\n- [Google Gemma 4 E2B IT](https://huggingface.co/Comfy-Org/gemma-4/blob/main/text_encoders/gemma4_e2b_it_bf16.safetensors)\n\n\n**Model Storage Location**\n\n```\nšŸ“‚ ComfyUI/\nā”œā”€ā”€ šŸ“‚ models/\nā”‚ ā”œā”€ā”€ šŸ“‚ text_encoders/\nā”‚ ā”‚ ā”œā”€ā”€ gemma4-12b-with-proj-ltx-2.5-bf16.safetensors\nā”‚ ā”‚ ā””ā”€ā”€ gemma4_e2b_it_bf16.safetensors\nā”‚ ā”œā”€ā”€ šŸ“‚ diffusion_models/\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.5-22b-distilled-transformer-bf16.safetensors\nā”‚ ā”œā”€ā”€ šŸ“‚ vae/\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.5-audio-vae-bf16.safetensors\nā”‚ ā”‚ ā””ā”€ā”€ ltx-2.5-video-vae-conv-bf16.safetensors / ltx-2.5-video-vae-bf16.safetensors\n```\n\n## Report Issues\nTo report any issues when running this workflow, [go to GitHub](https://github.com/Lightricks/ComfyUI-LTXVideo/issues)\n" ], "color": "#432", "bgcolor": "#653" }, { "id": 4852, "type": "SaveVideo", "pos": [ -649.2246890184857, 3495.4179179791327 ], "size": [ 523.0556530433919, 1021.0393877236328 ], "flags": {}, "order": 21, "mode": 0, "inputs": [ { "name": "video", "type": "VIDEO", "link": 13675 } ], "outputs": [ { "name": "video", "type": "VIDEO", "links": [] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.14.1", "Node name for S&R": "SaveVideo", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "output", "auto", "auto" ] }, { "id": 5514, "type": "792f0fd8-129e-48eb-9904-8d1aa82154d1", "pos": [ -2553.1792774271803, 3417.020535905777 ], "size": [ 266.73809728007427, 258.4331309403351 ], "flags": {}, "order": 17, "mode": 0, "inputs": [ { "name": "image", "type": "IMAGE", "link": 13638 }, { "label": "number of frames", "name": "length", "type": "INT", "widget": { "name": "length" }, "link": 13639 }, { "label": "fps", "name": "a", "type": "FLOAT", "widget": { "name": "a" }, "link": 13640 }, { "name": "audio_vae", "type": "VAE", "link": 13641 }, { "name": "vae", "type": "VAE", "link": 13642 }, { "label": "bypass_i2v", "name": "bypass", "type": "BOOLEAN", "widget": { "name": "bypass" }, "link": 13643 }, { "label": "video width", "name": "width", "type": "INT", "widget": { "name": "width" }, "link": null }, { "label": "video height", "name": "height", "type": "INT", "widget": { "name": "height" }, "link": null }, { "label": "img_strength", "name": "strength", "type": "FLOAT", "widget": { "name": "strength" }, "link": null } ], "outputs": [ { "name": "latent", "type": "LATENT", "links": [ 13656 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "previewExposures": [], "ue_properties": { "widget_ue_connectable": { "length": true, "a": true, "bypass": true, "width": true, "height": true, "strength": true }, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ 121, 0, false, 544, 960, 18, 0.7 ] }, { "id": 5014, "type": "c28230e9-b195-4ec2-9679-39e1e920f733", "pos": [ -3134.7996356798817, 3232.0617877399186 ], "size": [ 418.431640625, 683.441800056156 ], "flags": {}, "order": 15, "mode": 0, "inputs": [ { "label": "text encoder clip", "name": "clip", "type": "CLIP", "link": 13466 }, { "label": "text enhancer clip", "name": "clip_1", "type": "CLIP", "link": 13714 }, { "label": "image", "name": "input", "type": "IMAGE,MASK", "link": 13740 }, { "label": "use image input", "name": "value_3", "type": "BOOLEAN", "widget": { "name": "value_3" }, "link": null }, { "label": "Positive prompt", "name": "value_2", "type": "STRING", "widget": { "name": "value_2" }, "link": 13630 }, { "label": "Enhance positive prompt", "name": "cond", "type": "BOOLEAN", "widget": { "name": "cond" }, "link": null }, { "label": "Negative prompt", "name": "text", "type": "STRING", "widget": { "name": "text" }, "link": 13631 }, { "label": "fps", "name": "value", "type": "FLOAT", "widget": { "name": "value" }, "link": 13633 }, { "label": "duration in seconds", "name": "value_5", "type": "FLOAT", "widget": { "name": "value_5" }, "link": 13634 }, { "label": "enhancer_seed", "name": "seed", "type": "INT", "widget": { "name": "seed" }, "link": null }, { "label": "LTX API key (use api for text encoding to save memory)", "name": "value_4", "type": "STRING", "widget": { "name": "value_4" }, "link": null }, { "label": "ltx model ckpt path", "name": "ckpt_name", "type": "COMBO", "widget": { "name": "ckpt_name" }, "link": 13637 } ], "outputs": [ { "label": "bypass_i2v", "name": "BOOLEAN", "type": "BOOLEAN", "links": [ 13643 ] }, { "label": "resized image", "name": "resized", "type": "IMAGE", "links": [ 13638, 13853 ] }, { "label": "effective_positive_prompt", "name": "enhanced_prompt", "type": "STRING", "links": [ 13793 ] }, { "label": "positive_encoded", "name": "positive", "type": "CONDITIONING", "links": [ 13654, 13851 ] }, { "label": "negative_encoded", "name": "negative", "type": "CONDITIONING", "links": [ 13655, 13852 ] }, { "label": "fps", "name": "FLOAT", "type": "FLOAT", "links": [ 13640, 13674 ] }, { "label": "number of frames", "name": "INT", "type": "INT", "links": [ 13639 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "previewExposures": [], "ue_properties": { "widget_ue_connectable": { "value_3": true, "value_2": true, "cond": true, "text": true, "value": true, "value_5": true, "seed": true, "value_4": true, "ckpt_name": true }, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ true, "", false, "", 24, 5, 457289196, "", "ltx-2.3-22b-dev.safetensors" ] }, { "id": 5518, "type": "bee43e38-9234-4e41-86ff-63874164f482", "pos": [ -1031.7980789349124, 3872.2928072260424 ], "size": [ 319.2758675018076, 245.80179373843475 ], "flags": {}, "order": 20, "mode": 0, "inputs": [ { "name": "vae", "type": "VAE", "link": 13670 }, { "label": "video_latent", "name": "latents", "type": "LATENT", "link": 13854 }, { "label": "audio_latent", "name": "samples", "type": "LATENT", "link": 13855 }, { "name": "audio_vae", "type": "VAE", "link": 13673 }, { "name": "fps", "type": "FLOAT", "widget": { "name": "fps" }, "link": 13674 } ], "outputs": [ { "name": "VIDEO", "type": "VIDEO", "links": [ 13675 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "previewExposures": [], "ue_properties": { "widget_ue_connectable": { "fps": true }, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ 30, 8, 512, 64, 128, 32 ] }, { "id": 5508, "type": "PrimitiveStringMultiline", "pos": [ -3566.570577768467, 3215.283422746538 ], "size": [ 343.59614112612917, 197.1146191439493 ], "flags": {}, "order": 8, "mode": 0, "inputs": [], "outputs": [ { "name": "STRING", "type": "STRING", "links": [ 13630 ] } ], "title": "Prompt (positive)", "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "Node name for S&R": "PrimitiveStringMultiline", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "cinematic raw footage, movie scene, portrait. A beautiful blond woman acts very furious. She's cursing and yelling: \"Sick and tired of this Seedance bullshit. Its so heavily censored, my prompts are getting always rejected. And why the fuck do my jobs never completing staying in generation mode for eternity!\" Finally she says calmly: \"But LTX 2 rock!!\"" ], "color": "#232", "bgcolor": "#353" }, { "id": 5586, "type": "LoraLoaderModelOnly", "pos": [ -2473.2332004510295, 3831.4442950525754 ], "size": [ 237.80201586944986, 186.33859191033298 ], "flags": { "collapsed": false }, "order": 13, "mode": 0, "inputs": [ { "name": "model", "type": "MODEL", "link": 13858 } ], "outputs": [ { "name": "MODEL", "type": "MODEL", "links": [ 13859 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.3.68", "Node name for S&R": "LoraLoaderModelOnly", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "ltx-2.5-22b-distilled-lora-450-bf16.safetensors", 0.5 ] }, { "id": 5573, "type": "LatentUpscaleModelLoader", "pos": [ -2089.2503734447137, 4687.0057977222805 ], "size": [ 374.12551294089405, 83.11105512722906 ], "flags": { "collapsed": false }, "order": 9, "mode": 0, "inputs": [], "outputs": [ { "name": "LATENT_UPSCALE_MODEL", "type": "LATENT_UPSCALE_MODEL", "links": [ 13848 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.14.1", "Node name for S&R": "LatentUpscaleModelLoader", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "ltx-2.5-latent-spatial-upscaler-x2-bf16-1.0.safetensors" ] }, { "id": 2004, "type": "LoadImage", "pos": [ -3566.570577768467, 3597.4634417871353 ], "size": [ 343.59614112612917, 326 ], "flags": {}, "order": 10, "mode": 0, "inputs": [], "outputs": [ { "name": "IMAGE", "type": "IMAGE", "links": [ 13740 ] }, { "name": "MASK", "type": "MASK", "links": [] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.3.56", "Node name for S&R": "LoadImage", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, "widgets_values": [ "03714 (1).png", "image" ], "color": "#232", "bgcolor": "#353" }, { "id": 5585, "type": "7349e45a-56f0-49b5-9869-bd6db98dda48", "pos": [ -1018.9379331714171, 3342.1576800879598 ], "size": [ 317.5362494771101, 294.4737149063599 ], "flags": { "collapsed": false }, "order": 19, "mode": 0, "inputs": [ { "label": "video_latent", "name": "samples", "type": "LATENT", "link": 13849 }, { "name": "upscale_model", "type": "LATENT_UPSCALE_MODEL", "link": 13848 }, { "name": "vae", "type": "VAE", "link": 13856 }, { "name": "image", "type": "IMAGE", "link": 13853 }, { "label": "bypass_i2v", "name": "bypass", "type": "BOOLEAN", "widget": { "name": "bypass" }, "link": null }, { "name": "audio_latent", "type": "LATENT", "link": 13850 }, { "name": "model", "type": "MODEL", "link": 13861 }, { "name": "positive", "type": "CONDITIONING", "link": 13851 }, { "name": "negative", "type": "CONDITIONING", "link": 13852 }, { "label": "img_strength", "name": "strength", "type": "FLOAT", "widget": { "name": "strength" }, "link": null }, { "label": "guider cfg", "name": "cfg", "type": "FLOAT", "widget": { "name": "cfg" }, "link": null } ], "outputs": [ { "name": "video_latent", "type": "LATENT", "links": [ 13854 ] }, { "name": "audio_latent", "type": "LATENT", "links": [ 13855 ] } ], "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "ue_properties": { "widget_ue_connectable": { "bypass": true, "strength": true, "cfg": true }, "version": "7.5.2", "input_ue_unconnectable": {} }, "previewExposures": [] }, "widgets_values": [ false, 1, "lcm", 1, 42 ] }, { "id": 5512, "type": "PrimitiveFloat", "pos": [ -3566.570577768467, 4064.413032963737 ], "size": [ 343.59614112612917, 58 ], "flags": {}, "order": 11, "mode": 0, "inputs": [], "outputs": [ { "name": "FLOAT", "type": "FLOAT", "links": [ 13634 ] } ], "title": "duration in seconds (determines frames #)", "properties": { "cnr_id": "comfy-core", "ver": "0.25.0", "Node name for S&R": "PrimitiveFloat", "ue_properties": { "widget_ue_connectable": {}, "version": "7.5.2", "input_ue_unconnectable": {} } }, 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