React-to-Anything: stick likes to objects in video with Muse Spark + SAM 3.1
nikhilaravi · x · 2026-09-29
A developer demoed React-to-Anything: instead of liking a whole video, you can react to a specific object in it — and the reaction sticks to that object as it moves.
How it works: Muse Spark (on Meta Model API) captions what's in the scene, then SAM 3.1 takes each noun phrase and predicts instance masks with a stable per-frame id, so reactions follow the object for the entire video. Both models are available on Meta's Model API.
Related event: Muse Spark + SAM 3.1 Enable Object-Level Likes on Videos(2 posts)→
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