Minimax H3 workflow: Green screen replacement and automated lip-sync with new dialogue

Dohwar42 · reddit · 2026-08-24

A practical workflow using Minimax H3's Ref2Va allows for replacing green screen backgrounds with animated images. The user demonstrated this by inserting an alien world background behind a weather presenter video. Additionally, the workflow integrates AI-generated audio with a British accent, automatically re-syncing the presenter's lip movements to the new dialogue. The post includes the specific prompt used and links to free green screen resources for testing.

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