Guide
How It Works
Reaction in React Sync. Show in your streaming tab. Master Controls keep them locked together.
- 01
Add your reaction
Paste a YouTube URL or upload a local file. React Sync loads it as your reaction player.
Direct URL or local file — both work.
- 02
Open the show
Pick a supported streaming service and open it from Watch. The Chrome extension connects the player so React Sync can talk to it.
Extension required for streaming sync.
- 03
Line up sync points
Anchor reaction time to show time so both timelines match. Add a precise point, or capture one from Master Controls while playing.
Reaction start points apply automatically when ready.
- 04
Drive both with Master Controls
Play, pause, seek, skip, and jump markers from one surface. Sync lock keeps reaction and show coupled—or unlock to fine-tune.
Use Master Controls, not the streaming site player.