演示 — 输入与输出
Prompt 结构参考 Inspired by fal.ai H3 Guide
Cat-to-Dog Replacement
Single-subject replacement edit — swap cat for dog in existing footage.
适用对象
Quick localized edit demos and meme-style revisions.
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。
- Edit instruction
One substitution + stability constraint.
改编到你的项目
- Specify breed or size.
- Add behavior note (sitting, walking).
常见失误
- Regenerating entire scene instead of local edit.
- Scale mismatch on floor contact.
完整 Prompt（复制并编辑）
Replace the cat in the video with a dog. Keep everything else in the shot stable: background, camera motion, lighting, and timing. Match the dog's scale and contact shadows to the original subject.
Ref2VA 新手？阅读 MiniMax H3 Ref2VA 指南
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