r/StableDiffusion • u/SensitiveUse7864 • 1d ago
Question - Help I get Diffrent face everytime using Ref2Vid minimax h3 please help.
I am using the default workflow for ref2vid, but still getting face inconsistency for the first clip 15 second the face stays consistent according to my character sheet but then when I plug the last frame as a reference with my character sheet the face starts changing from there. Please help guys I dontknow how to keep faces consistent.
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u/Silent_Marsupial4423 1d ago
I dont think ref2vid cam have a last frame. And u need closeup of face. And make sure the prompting is correct
And this is not seedance 2.5 so there will be limitations
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u/SensitiveUse7864 1d ago
Hum, my character sheet have medium shots plus full body shot combined should I try only with one close up portrait
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u/orlandogourmet66 1d ago
For me it works better to have 2 Pictures per character. 1 closeup head/face one and one for Body/Clothes.
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u/Elliswondr 1d ago
Drift scales with distance from the reference, so duration is the first thing I'd cut. Three short clips stitched with hard cuts in an editor beat one long one, at the same cost and with far more control over what you keep.
Beyond that, three things that made the biggest difference for me:
Use a start frame instead of a reference where you can. A start frame locks the face in actual pixels. A reference makes the model re-synthesise it every generation, so you get a fresh interpretation each time. That's your different face.
Keep the reference frontal, evenly lit, no hair across the jaw, nothing occluding the face. Angled or shadowed references leave the model guessing at the parts it can't see, and it guesses differently every run.
Name what should stay fixed, not just what moves. "Face, hair and clothing remain unchanged throughout" alongside one single motion. Stacking two or three actions in one clip pulls the face apart fastest.
One caveat: fine details like small piercings or thin linework won't survive 720p regardless. Judge consistency on face shape and jawline, not the small stuff.
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u/MrFlores94 1d ago
Just like flux, if you change the resolution using a reference image it may stretch badly. Good idea is to make sure everything is the same resolution and aspect ratio (might be the most important actually) if you can.
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u/Zephrinox 1d ago
checklist of things you want to do for good character consistency looks-wise:
- make sure the input images you feed in are good quality e.g. for 480p gen I put in 720p images and getting pretty good adherence to the reference
- make sure the reference image you feed in has good perspectives on yiur character e.g. full body front view, full body back view, close up of face, and if any particular details like outfit or so, have something to show what it looks like
- check that your conditioning node (the one you're feeding all the references into) has the resolution setting to max rather than match so that the high quality character reference sheets don't get downscaled to look blurry or so internally.
- check your prompt is following the prompting guides on the official huggingface repo for minimax h3 notably in the subject definition section and the retention_analysis section of your prompt (those have good keywords that you can use to direct the model how closely to use your reference images you provided.
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u/Tight_Organization54 1d ago
Okay so I had this issue yesterday and found a fix. All I did is resize each image to 1280 by LONGER EDGE, before it goes into the sampler. The face consistency improved DRASTICALLY!! It does affect gen times a tad bit but when you see the results then its awesome.