Viggle

You pick a motion video, such as a trending template, or upload your own clip, then add a photo of the character you want in it. Viggle maps the movement onto the character frame by frame and returns an MP4. Multi-Track finds and replaces several people in one pass, and Real-Time Swap works live. For 3D work, the separately billed PINOC product turns footage or a text prompt into skeletal animation exported as FBX or GLB.

• •Mix - Upload a photo and put that person or character into one of 10,000+ meme and dance templates or into a video you supply.
• •Motion Control - Transfers movement from a source video onto a character image with consistent body mechanics, without rigging or keyframing.
• •Multi-Track - Identifies, tracks and replaces multiple characters in a single pass, without manual masking or repeated renders.
• •Real-Time Swap - Swaps characters into video in real time, with session length ranging from 5 minutes on Free to unlimited on Max.
• •Viggle API - Lets developers create characters from photos and render them into motion templates for games, apps and branded campaigns.

Social media creators use it to put themselves or friends into trending meme and dance videos. Animators and VFX artists use motion control for previsualization and character animation without rigging. Brands and game studios use the API for interactive campaigns and avatar experiences. Free videos carry a watermark, so commercial work needs a paid plan.