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Scene replacement / Reference Generation

Fairy-tale greenscreen composite A

Background replacement works best when action alignment and relighting are explicit requirements.

Official manual translationTranslated from a MiniMax H3 manual example
Actual H3 output / 15s
Prompt -> result

What this output demonstrates

The performer is integrated into a fantasy environment with matched motion, scale, and scene lighting.

Control pattern
Background replacement works best when action alignment and relighting are explicit requirements.
Check in your run
A correct mask can still look false when subject lighting remains unchanged.
Official manual example / English teaching translation / source reviewed 2026-08-08Open this example in the H3 manual
Shot structure
0s8s15s
INPUTR2V
ACTION01
CAMERA01
AUDIOON
Working principle

Background replacement works best when action alignment and relighting are explicit requirements.

Watch for

A correct mask can still look false when subject lighting remains unchanged.

Adapt this brief

Prompt draft

Remove the green background from Video 1 and replace it with a fairy-tale environment in the style of Video 2. Make every background element respond correctly to the performer action. Relight the performer so direction, color, edge light, and exposure match the new world while preserving the original motion.

Replace the subject and reference roles first. Change camera, timing, and sound one variable at a time.