Why Use Video Reference for Animation
When you want to animate a 3D character following the movements from a video, it's not advisable to treat the video as a texture on a plane. The correct way is to use it as a reference in the viewport to move the character frame by frame, ensuring precision in every action.
How to Set It Up in 3ds Max
To use a video as a reference:
- Go to Views / Viewport Background.
- Select Video / Image File and load your video file.
- Activate Match Frame / Use Environment Background.
- Check Display Background / Maintain Aspect Ratio.
This allows each frame of the video to be displayed in the correct position in the viewport while you animate the character on the timeline.
Avoid Using the Video as a Texture
Do not place the video as a texture on a plane, because you won't be able to align the animation frame by frame accurately. Using it as a reference in the viewport guarantees precision when moving bones, controllers, or any part of the character's rig.
Workflow for Final Integration
For final compositions:
- Render the character with an alpha channel in 3ds Max.
- Integrate the animation in After Effects over the original video.
- Add sound and visual effects in post-production.
This workflow ensures the character follows the real action without modifying the original video inside 3ds Max.
Conclusion
Using the video as a reference in the viewport is the most accurate way to animate a 3D character following real movements. Avoid texturing the video and use export with an alpha channel for integration in post-production, guaranteeing exact tracking and professional results.