Fix video and audio out of sync
If voices run ahead of lips, or the picture slows down while the sound keeps going, the file’s timing information is wrong, not the footage itself.
Why sync breaks
Each video frame and audio sample has a timestamp. A bug in the recording app, a damaged index or a bad conversion can stretch the video timestamps so the picture plays slower or faster than the sound.
How the repair fixes it
The repair compares the video track’s length with the audio track and the recording’s own frame rate, rewrites the video timing to match, and verifies the result plays in sync.
Start with Auto Rescue or Swift; both handle timing errors and keep the original quality.
Frequently asked questions
Is the video re-encoded?
Not when only the timing is wrong: the frames are kept and only their timestamps are corrected.
Can I enter the frame rate myself?
You can, but it is optional: the frame rate is read from the file whenever it survives.