Out of sync all the way through

[pagey179]

I've looked through lots of the answers in this forum but can't find anything specific enough to my problem...

Trying to convert an AVI to burn to DVD. The DivX file plays in Windows Media Player and VirtualDub fine - the audio is perfectly in sync all the way through. I have converted several files using either Diko or AVI2DVD with excellent results. This file converts without error message but when played either on the PC or burned to a DVD - the audio is 2.25 seconds (my best estimate) in front of the video all the way through.

The Gspot screen of the AVI file is shown.

I thought I could introduce a delay in the audio using VirtualDub but this gave the same result once burned. I tried using different codecs in AVI2DVD but this still gave the same result. Any suggestions welcome!!!

[Baldrick]

tried https://forum.videohelp.com/viewtopic.php?t=309224 ? converting the audio to wav.

[pagey179]

I actually have that very post printed out in front of me - this is what I tried tonight using virtualdubmod but with the same results as you can see from the screenshot the audio is CBR not VBR so I scanned as suggested and found no errors.

[Squash]

I've run into problems like this a couple of times. It looks like the audio preload is too low (should be roughly 300 to 500 ms), and the "split across interleaves" can cause problems. What has worked for me in the past is to demux with VDubMod, then remux using AVIMuxGui (this will align the frames on interleaves and hopefully fix the preload; if not, you can probably adjust that manually, I don't remember). Usually VDudbMod works fine for me for muxing but not always. I don't have any real knowledge in this area so I'm sure there are better ways; it's just a method I've scrounged together from various posts I've read and trial-and-error.

Once you get the AVI with the preload fixed and the audio frames aligned on interleaves, run it (or better yet, a test clip from it) through AVI2DVD. I used to use AVI2DVD all the time (with CCE) and it worked fine for me, although since I got a DVD player that plays Divx AVIs I haven't used it. I don't have any experience with DIKO.

Good luck.

[redwudz]

Squash's advice sounds pretty good. I generally use ConvertXToDVD for those type of conversions. It does a fair job and usually keeps the sync. If it still turns out with a sync problem, then it can get complicated to sort it out.

If the sync loss is the same the full length of the video, you can add a offset in VD or VD Mod. Determining it is the had part.

Apparently, you don't have VBR audio, so that's not it. Some programs loose the audio offset information when converting. If your original file is in sync, then that may be what happened. If so, try ConvertX or the older freeware DivxToDVD or a different program. Or it may be an error in the file or the conversion program. A file with missing frames may play properly in a software player, but when converted, have sync problems.

[pagey179]

Thanks for this advice - I'll try these suggestions tonight and report back

[mwkurt]

Do a search on my nick in the forums as I have helped people with this problem recently.
Mark

[pagey179]

A quick update - only had time to choose one suggestion and leave it runnung last night, then return later to check the results - tried DivxToDVD conversion program - same result still out of sync. I'll try the other suggestions asap.

[pagey179]

Thanks to all for your advice and suggestions - now sorted - AVIMuxGui did the trick and re-aligned the video/audio.