MiniMax H3 Ref2V character swap drifts identity; user shares full ComfyUI workflow for help

mike_good · reddit · 2026-08-23

A user attempting character replacement with MiniMax H3 Ref2V in ComfyUI—swapping Rick Astley in the source video for a reference-image person while keeping motion, expressions, camera and background—reports both motion transfer and character swap underperform: the output doesn't resemble the reference or identity drifts. Setup: RTX 5070 Ti 16GB, 9:16 0.4MP workflow; full workflow JSON, prompt, source video and reference image shared, asking for pointers on reference crop, refimagesize, resolution, or a working V2V workflow to compare against.

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