VOB to AVI AC3 5.1 out of sync Issues

[DonSqueak]

Hi there!

Okay, before I start I wanted to make clear that I have already searched the forum for this, and that I am aware of the fact that it has been discussed here several times. But there never has been any solution for it, the threads always seem to end with the sentence "it's still out of sync", which brings me to my problem:

When I encode VOB files from DVDs with 5.1 sound with ffmpeg (mencoder doesn't support AC3 5.1, does it), the audio or video is out of sync. Also, the delay is always the same, no matter which bitrate I use for the sound. Well, that's the thing now...

Please help, thanks.

[DonSqueak]

Hello,

sorry, have I been impolite? Please answer, still having the same problems. Or does 0.0.9t solve the problem?

Cheers, Martin.

[major]

Try using "Passthrough" as audio codec with "mencoder DivX" and/or with "ffmpeg DivX".

[jntaylor63]

Not to come off sounding like a prick, but why don't you use AutoGK?

It has to be the best and stable app for DVD to AVI.

Ops! Didn't know this was MAC

[major]

This is a Mac OSX forum.

[DonSqueak]

Have tried "passthrough". With ffmpeg-engine the out-of-sync problems are the same. Weird thing is: Sound seems to start playback anew when shuffling forward using MPlayer OSX (each version). When I just let it play, the out-of-sync is also there, though. VLC playback of sound doesn't work at all.
mencoder-engine transforms 5.1 to stereo when using "passthrough" automatically.

Still using 0.0.9s. Do the enigines in t work differently?

Cheers, Martin.

PS: Do I need to register "t" again?

[EDIT] PPS: Tried it with 0.0.9t Trial: Same effect exactly. Can anyone confirm this? Virtually any .VOB file, be it one DVD chapter extracted with MacTheRipper, Preselect DivX or XviD ffmpeg, Audio Passtrough (if source is 5.1), or Audio AC3 5.1.

[DonSqueak]

Hi there,

just wanted to let you know, that the problem is still there.

Can anyone confirm this? I know of many people in the past who had the same problems. Did you solve them? Major, are you not having the problems when encoding 5.1 sound avis?

Cheers, Martin.

[major]

I'm researching about sound sync for MP4 H264. About other formats, I advise to check if 0.0.9s worked, so as I can track which differences may be relevant. 0.0.9s can be found at http://homepage.mac.com/major4/ffmpegX_0.0.9s.dmg

[DonSqueak]

0.0.0s didn't work either. Exactly the same problem. Only AC3 5.1 target files. Only engine even generating true 5.1 is ffmpeg, so source is always VOB. No matter what bitrate.

Cheers, Martin.