Convert a sync offset between frames and milliseconds for picture.
Each frame lasts the thousand milliseconds of a second divided by the frame rate, so the frame offset converts directly to a milliseconds trim. Speech intelligibility breaks with lag beyond a few frames, so a precise frame-to-ms conversion fixes perceived sync fast.
Video Audio Sync
Offset ms = frames x 1000 / fps
Offset ms = frames x 1000 / fps Each frame lasts the thousand milliseconds of a second divided by the frame rate, so the frame offset converts directly to a milliseconds trim.
Speech intelligibility breaks with lag beyond a few frames, so a precise frame-to-ms conversion fixes perceived sync fast.
This calculator takes 2 inputs: Offset, Frame rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.