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Aiming LTX-2.5 alpha-gen at one person: SAM3 + inpaint trick gives native 4K hair mattes in ComfyUI (open source)

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

LTX-2.5's alpha-gen IC-LoRA draws great hair edges, but it mattes everyone in frame. I wanted one person out of a crowd, so I built a node around it: SAM3 picks the subject from one click. The other people get inpainted out of a copy of the plate. LTX alpha-gen runs on that copy, so it only has one…

Read the full story at r/StableDiffusion ↗

Timeline · 1 report

  1. 2026-10-29 04:36 · r/StableDiffusion
    Aiming LTX-2.5 alpha-gen at one person: SAM3 + inpaint trick gives native 4K hair mattes in ComfyUI (open source)

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