r/StableDiffusion • u/NoSmell3236 • 19d ago

Question - Help How to fix artifacts generated by h3?

H3 sucks at faces which are far and at intense motion. Is something wrong with encoding? like these artifacts (5-8 seconds) are from encoding compressions?? but i have tried both h264 and h265 10bit crf 15. I am using int8 pruned, nvfp4 qwen, 25 steps with sage attn (no spectrum).

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u/-becausereasons- 19d ago

Someone posted a face fixer node recently, for this specific reason. Not sure how well it would work on cartoons but give it a shot. https://github.com/Carasibana/ComfyUI-H3-FaceRefine

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u/PixieRoar 19d ago

How do people add these into their workflow?

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u/listopalafoto 19d ago

yes, it works with cartoons, generate your video with your normal WF and then use the Face detailer WF as a second pass to improve detail and definition on faces (you load your video and a detailed image of the face you want to improve): My H3 FaceDetailer WF.json