[H-GEN] Fixing misaligned audio in a video file?

[Russell Stuart]

On Fri, 2012-10-26 at 10:29 +1000, Nick Lawrence wrote:
> I have a video file (mp4) in which the audio is misaligned to the
> video. It is out by a few seconds, which is rather jarring.
>  
> Is there a way to fix this?

Many players can fix this on the fly.  Eg pressing + and - in mplayer
alters the audio delay, and m and n in xine does the same thing.

Ffmpeg can be used to fix the file, eg:

ffmpeg -itsoffset 00:00:02 -i x.mp4 -vcodec copy x-new.mp4