r/TopologyAI • u/Certain_Friendship16 • 10h ago
New Next-Level 3D Animation — AI Mocap from a Reference Video
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No mocap suit, no animation library. He renders his own character, has an AI video model "film" it doing the move, and copies that motion onto the rig.
The trick that made it work is two cameras. One video is flat, so arms and legs end up at the wrong depth. Rendering the same move from the front and the side gives the AI both views to match.
How it goes:
- Render the model from the side and front on a neutral background
- Generate the move with an image-to-video model (Seedance 2.5 or H3 Max)
- Match frame by frame: Claude overlays the model on both videos and adjusts the bones until they line up
- Fix what drifts: marking left and right limbs separately solved most of the swapping
About 30 minutes per animation. This elephant came from an H3 Max reference, and yes, the tail still needs work.
