fixing delayed sound for VCDs?

[Grand13]

I just recently just created a few vcds from my mpegs, but the sound is delayed by about 1 second. anyone have any solutions. the video and sound work fine, the sound is just delayed which becomes rather annoying after awhile

[andyg]

Hi Grand13,

This assumes that the audio gap is 1 second behind all the way through the film: I use TMPGEnc to encode my MPEGS and if you click on setting, then click on the advanced tab, then tick the 'source range' box and double click on 'source range', a window will open up. Here you can specify the length of your mpeg aswell as adjust the audio-sync (It's in milliseconds so I'll leave that to you since I'm not too hot on units) A plus figure increases the gap and a minus figure decreases the gap. Then simply click start and things should then be in sync. Hope that helps.

[presto]

One thing that is great about TMPGenc is that you can start a process and then cancel it, check the resulting mpg, and then hit start and it will start all over. So you can guess at the number to offset the audio and then check the results untill you get it right. I haven't tried this with for what you are doing but I have found it handy for testing other settings.

[J]

I'm having a similar problem: after converting my movies with TMPG, the audio seems to be out of sync in some parts of the movie.
In the beginning its ok, but after a while there are some parts that are no longer correct (the audio is about 1 sec late).
I also add subs, so I frameserve using Virtual Dub. I think this might be the cause for it, because when I try to cut AVI-files the first part is ok but the second part is out of sync.
Does anyone have any suggestions?

Thanx!

[xxBladExx]

Don't cut the movie until you're done encoding. You can cut it afterwards.

I had the similar problem.

[mats.hogberg]

Just solved a similar problem (with help from the excellent howtos here at VCDHelp). The audio in my mpg move (from a DivX source) became increasingly out of sync, to in the end become utterly unendurable.
As I had deleted the original mpg (Always take at least a cursory look at the resulting MPG at different points before burning - I do now... ) I first had to turn my VCD into a Nero image using CD Copy in Nero, and write to image.
Then I reconstructed the original mpg file from the Nero image with VCDGear. I was now back to where I was after TMPGEnc had finished converting the DivX AVI into a MPG.
Using TPMGEnc's MPEG tools, I demuxed (separated) the video and audio streams.
After determining the length of the video stream, I loaded the audio stream into GoldWave, to find that the audio stream was 8 seconds shorter than the video stream! Using the Time Warp tool, I "stretched" the audio to the same length as the video stream and saved it as WAV (as I didn't find any option in GoldWave to save as mp2...).
Then I first tried tooLAME to convert the WAV to MP2, but tooLAME kept crashing after ca 90% of the wav, so I tried wav2mp instead, which worked fine.
Finally, I once again fired up TMPGEnc and the MPEG Tools, to multiplex the 2 streams. Video and audio in perfect sync!

[J]

Blade, I've been doing it like that for a while now, but the latest movie I converted(I did it in one piece) now also has unsynced audio. The original movie has no audio probs so that cant be it neither.
The problem is that the audio starts of correct for about 45 minutes and then is unsynced for a few min, then its synced again and so on.
You gave me an idea Mats: I'll make a separate WAV with Virtual Dub and try to combine that in TMPG with my vdr-file while I'm frameserving. I hope this will work.
BTW, is there anyone else who has encountered the problem with Virtual Dub?(when cutting a movie in two, the audio of the second part is out of sync) It used to work in the beginning.