[FFmpeg-user] problem with audio/video sync after conversion

[Roger Pack]

>> Also experienced audio sync issues with mp4 playback on iOS devices, so the sync problems are, at least in my experience, not just limited to flash players. I've STR also observing sync issues with playback of mp4's in newer browsers that support mp4's in the new <video> tag, but again, not on webm in <video>.

If you can create a reproducible sample I'd file a trac ticket.