演示 — 输入与输出
Prompt 结构参考 Inspired by fal.ai H3 Guide
Green-Screen to Fairytale Composite
Replace green-screen footage with a fairy-tale background that matches subject motion and relighting.
适用对象
Compositors replacing backgrounds while preserving performance.
此 Prompt 如何构建
请先阅读 — 理解模式后，你可以从零撰写自己的 Prompt。
- Video 1
Foreground performance with green screen.
- Video 2
Target environment and lighting reference.
改编到你的项目
- Swap fairy-tale for sci-fi or urban night.
- Name specific relight cues.
常见失误
- Background not reacting to subject motion.
- Unmatched edge spill.
完整 Prompt（复制并编辑）
Remove the green screen background of Video 1 and turn it into a fairy tale-like background similar to Video 2. The background elements need to completely match the actions of the characters in Video 1. Modify the lighting of the characters in Video 1 so that it completely matches the background.
Ref2VA 新手？阅读 MiniMax H3 Ref2VA 指南
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