MiniMax H3 reference-to-video preserves actors' performances but caps at 9s on a 3090
ItsLukeHill · reddit · 2026-10-24
A Reddit user shared their hands-on workflow with MiniMax H3 reference-to-video: keeping real actors' performances while swapping environments and outfits, with lighting that sells the composite far better than green screen.
- On a single 3090, clips OOM past nine seconds, the current ceiling.
- Goal: seamlessly join multiple H3 clips into one uninterrupted take of an actor's real performance — the "holy grail" of AI filmmaking.
- Open questions: can H3's new video-continuation workflows be combined with reference-to-video for longer clips, or is it better to cut short H3 clips and use something like Seedance when a long take is unavoidable?
A snapshot of where "performance preservation + environment swap" AI filmmaking stands, and its VRAM limits.
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