Swapping Faces in Hailuo Videos: One Character Works, Two-Character Fights Fall Apart
MIRIVUM · reddit · 2026-09-06
Inspired by the new Street Fighter trailer, the author used Hailuo (MiniMax) in ComfyUI to swap themselves into the bathhouse fight scene. The first shadowy entrance shot worked well with just a reference image and prompting—clearly better than SAM3, which struggles with shadows and face detection. But the next cut replaced the opponent's face too, producing a mangled 'me fighting me' scene with broken choreography. The author is asking for ComfyUI workflows, nodes, or prompting techniques to swap one specific person while keeping the scene and action intact.
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