How to change someone's skin colour without it looking like a filter
Ask Vizard Agent for a conservative skin mask and a preview before anything renders. It builds the selection from the skin's colour range, compares the corrected frame against the original to confirm nothing outside the skin moved, checks the texture survived the change, and handles the whites of the eyes as a second pass sampled on a frame where the eyes are open.
What do you type into Vizard Agent?
Name the exclusions explicitly. Telling Vizard Agent what should change describes only half the job. The other half is the list of things in frame that happen to share skin's colour range and so have to be left alone. Say how strong the change should be, too: subtle, or clearly visible.
Prompt
What does Vizard Agent actually do?
A colour change on skin isn't like recolouring a jacket. Skin shares its colour range with hands, sand, wood and half the walls in the world, so the first pass is deliberately timid: a conservative mask that misses a little is far easier to extend than a greedy one is to pull back. In the session behind this article it:
- Sampled frames to find where the skin actually was, checked the selective colour controls, and built a conservative skin mask with a preview of the correction.
- Checked the preview for two separate things: anything outside the skin that had changed, and realistic texture, since a correction can pass one and fail the other.
- Compared the original and corrected frame at the same moment, then rendered the full clip with the original audio untouched.
- Sampled the face across the clip to place a stable eye correction, holding the position rather than recalculating it every frame, which would flicker.
- Previewed a restrained tint in the whites of the eyes, checked it on a frame where she was looking at camera, then strengthened it slightly and verified the edges survived.
When does this not work well?
Colour selection struggles when the scene shares the skin's range. A wooden wall, a beige sofa or bare arms in the background sit in the same band, and pulling the mask in tightly enough to exclude them starts excluding the subject's own cheek. Strong coloured lighting, fast motion and very heavy changes make it harder still.
Common questions
Why is skin hard to isolate? Because half the world shares its colour range. Vizard Agent masks conservatively for that reason.
Will the texture survive? That is checked separately from the masking. Ask Vizard Agent to confirm both.
Can it work on several people? Yes, but name which one. Otherwise Vizard Agent changes everyone in frame.