Video/Audio sync problem in AC3 movie file

[amir77a]

Hi,

I have avi file (xVid), with AC3 (6CH) which I wish to convet to DVD Video with 6CH.

In short this is what I did:
1. I seperated the audio with VirtualDubMod.
2. I converted AVI-->m2V with TMPGenc.
3 Tried to create DVD with TMPGenc DVD Author.

I found out that there is a time difference between the audio and the video of about 8 seconds. It's not DVD author fault, since the problem is in the audio creation.
Of course if I try to create DVD there is no audio/vidoe sync.

In the original avi everything is OK.

Any ideas how to overcome this problem?

PS I hope I am asking in the right forum.

Thanks.

[Baldrick]

did you do any framerate conversion??? like pal to ntsc or ntsc to pal? 23.976 fps to 25fps or 25fps to 29.97 or something?

[amir77a]

No I didn't. The movie was originaly and now 25.00 fps.

PS. I don't think newbie/general discussions is the right forum for this thread. With all the respect this aint newbie question and certainly not a general discussion. You moved this thread to the wrong forum.

[Baldrick]

you can try demux the ac3 with avimux gui.

[nic2k4]

For ripping the AC3, PGCDemux works real nice.

edit:
Never mind, just realised you're starting with AVI's.

[amir77a]

PGCDexum can rip AC3 only from original DVD (using the IFO), I have AVI (xVid) so it seems it can't help in ripping the AC3.
I need another tool.

AVIMux GUI result in mka file, which I can't see what it is good for.

Thanks again for your help.

[amir77a]

OK, the problem was solved.

Just for the info of anybody who might read this post. I used DVD lab, which has the functions of audio delay. I rebuilt the AC3 file and added delay of 8000ms. Everything is OK now.

Another option was found here: AC3 Delay Corrector V2.0 - http://home.t-online.de/home/520072193568-0001/

Good Luck.