Paste YouTube URLs into the fields at the top. Load up to 5 videos plus an optional audio track. Once all videos are ready, playback controls unlock.
Per-video controls
Pin — marks this video as the main reference. Displays larger and unmuted; all others mute automatically.
Speaker — toggles mute independently. Stays in sync if you mute via the YouTube player controls.
Sync mode
Turn Sync ON, scrub each video to a shared moment (e.g. a whistle blow, a key engagement), then turn Sync OFF. All future seeks and playback respect those offsets.
Share config
Copies a URL with all video IDs and sync timestamps to clipboard. Paste it to restore the exact setup.
Keyboard
⌨Space — play / pause all videos
SYNC MODE ACTIVE — seek each video to a shared reference moment, then turn OFF to play in sync