MP4/H.264 Audio Sync

[mjp14]

I have a dvd I converted to h.264/mp4 and the audio is out of sync. VirtualDub wont open the file to adjust the timing. What are my other options?

[neuron2]

How did you convert it?

[poisondeathray]

If the audio & video are the same length, and this is a constant sync issue, you can use avidemux to shift the audio in that file (avidemux supports .mp4, virtualdub does not). Another option is to use mp4box to enter a media delay (YAMB is the gui)

If your audio & video have different lengths (progressively worsening sync issue), you can either shrink/expand the audio or video to match with the proper offset

[mjp14]

I converted it using WinFF from a single VOB file. The sync issue seems to be constant. I will give avidemux a try. Thanks for the advice!

[brainisfried]

The avidemux docs recommend using ProjectX to repair such broken MPEG files:
http://www.avidemux.org/admWiki/index.php?title=Editing_MPEG_capture_%28DVB_or_IVTV%29
I had the same audio sync issues and this fixed them. I'm running 64-bit Fedora Linux.