CommentarySync — Sync fan commentary tracks to any movie

Load a movie file to start

0:000:00

Movie

Commentary

Shortcuts: Space play/pause · ← → skip 5s · Shift+← → skip 30s · [ ] nudge 100ms · , . nudge 10ms · M mark movie · N mark commentary

Movie video

Click or drop a file

Commentary audio

Click or drop a file

Commentary video (PiP)

Click or drop a file

+0.000s

Hit a beat in the movie, then the same beat in the commentary. Offset auto-computes.

No cue points saved yet.

Browser extension

Sync commentary to Netflix, Disney+, HBO Max, Prime Video, or YouTube in another tab. Install once, no signup needed.

Install instructions