Update app.py

app.py

@@ -302,11 +302,13 @@ def generate_video(
             tgt_aspect = target_w / target_h
             if src_aspect > tgt_aspect:
                 content_h = int(round(target_w / src_aspect))
+                content_h -= content_h % 2  # libx264 yuv420p needs even dims
                 if 0 < content_h < hdr_video.shape[1]:
                     print(f"[HDR] Cropping reflected bottom: {hdr_video.shape[1]} -> {content_h}")
                     hdr_video = hdr_video[:, :content_h, :, :]
             elif src_aspect < tgt_aspect:
                 content_w = int(round(target_h * src_aspect))
+                content_w -= content_w % 2  # libx264 yuv420p needs even dims
                 if 0 < content_w < hdr_video.shape[2]:
                     print(f"[HDR] Cropping reflected right: {hdr_video.shape[2]} -> {content_w}")
                     hdr_video = hdr_video[:, :, :content_w, :]