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View Full Version : MKVTools Audio Sync problems (for ATV2)




ninethirty
Jan 8, 2011, 04:00 PM
Hey Everyone,

I'll try to keep this simple:

I've got a few MKV files that I've converted to MP4 by passing through the video and either passing through audio (if it's just a 6 channel track) or converting to 5.1 AC3 if it's a DTS track (I've had issues trying to pass DTS through.. not sure if Apple TV can even play this anyway).

Long story short... I've noticed so far with the DTS converted tracks that around the middle of the movie, or sooner, the audio goes out of sync with the video. I checked the converted MP4 in Quicktime only to discover the same out of sync issues. If I take the original MKV and open it in VLC, the audio is fine.

Anyone else had this problem? Any solutions, or is this just something I'm going to have to deal with? I haven't tried enough files that are 6 channel audio to know if those files have issues or not, but so far it appears not.

Thanks in advance for your experiences, solutions or whatever. Much appreciated.

Cheers!



Ritsuka
Jan 9, 2011, 03:13 AM
Maybe the video track is vfr (variable frame rate). I don't think mkvtools supports vfr yet.
Or something is going wrong in the audio conversion process.