Why do AI video clips drift in color at all?

Every export, re-encode, and image round-trip nudges color. Generators decode a seed frame, render in their own color space, then re-encode to 8-bit yuv420p for delivery — and each conversion clips and rounds values slightly. Chain several clips and those small shifts accumulate into visible mismatches in brightness, contrast, and hue.

Does Color Correct re-grade the whole clip or just match it?

It matches. Color Correct computes a color transform from a reference frame (or frame pair) and applies it so the corrected clip lines up with your reference — it doesn't impose a creative grade. You stay in control of the look; Color Correct just removes the unwanted drift.

Wan · Color drift between chained clips

Fix color drift between Wan clips

Chaining Wan generations by reusing the previous clip’s last frame introduces the same incremental color drift common to all frame-seeded video models.

What you're seeing

Color balance changing between consecutive Wan clips
A warm or cool cast accumulating over a sequence
Contrast steps at the seams

Why it happens

Wan decodes the seed frame, renders internally, and re-encodes to 8-bit delivery, so the output frame isn’t identical to the frame you exported. Each chained clip therefore begins from a slightly shifted color, and the shifts compound.

How to fix it with Color Correct

Generate the next Wan clip from the previous clip’s last frame.
Load the previous (reference) and new (source) clips into Color Correct.
Run Frame-Pair Color Matching from the new clip’s first frame to the reference’s last frame.
Mask out any genuinely new content before matching.

Free plan available — watermarked outputs, no card required.

Step-by-step in the docs

Frequently asked questions

Why do AI video clips drift in color at all?: Every export, re-encode, and image round-trip nudges color. Generators decode a seed frame, render in their own color space, then re-encode to 8-bit yuv420p for delivery — and each conversion clips and rounds values slightly. Chain several clips and those small shifts accumulate into visible mismatches in brightness, contrast, and hue.
Does Color Correct re-grade the whole clip or just match it?: It matches. Color Correct computes a color transform from a reference frame (or frame pair) and applies it so the corrected clip lines up with your reference — it doesn't impose a creative grade. You stay in control of the look; Color Correct just removes the unwanted drift.

Related guides

Stop fighting color drift

Color Correct matches your AI video clips frame-to-frame so a sequence stays consistent.