Audio sync problem with avi's on DVD player

[Johnny_S]

I have a whole bunch of avi files encoded with DivX at 23.976 fps, and I think with VBR MP3 audio. They all play fine on my computer, but when encoded with TMPGEnc or any other program for that fact, and burned to SVCD or DVD, the result is always out of sync on my stand alone dvd player. I know it's just my dvd player because the discs work with perfect sync on my playstation, but I was wondering if anyone could help me with getting it working on my standalone DVD player.

(I'm not sure this has to do with anything, but in the file information in VDub of my avi's, the length's of the audio and video stream's never match. The only file which ever had perfect sync on my standalone DVD player, had a CBR (I think) and both audio and video streams had the same length, and it was XviD encoded.)

[Bjs]

The only safe ones are those that vdub reports as both being matched length , ie , video and audio same length .

Most programs just dont handle this at all well , and there are not as yet an tools available at the moment to correct this .

Ulead video studio is what I use to convert pal to nstc , a reverse , and does a far better job than any other program .

There are cheat ways to correct the audio :

1: the insertion of audio snippets too lengthen the stream to adjust lenght .
Goldwave from what I recall can also adjust the actual time lenght .
2: using vdubs inbiult adjustment abilities .

The second is just as tricky , and takes a fair amount of time to get adjustments set correctly , so as not too become noticable in playback .

Too adjust a full movie title , depending on the amount of "out of sync" issue , can take 2 to 3 hours to readjust to almost perfect re-sync .

[guns1inger]

Preface : I am assuming from your post that you are converting to mpegII/DVD compliant out.

I have used two methods, both of which have always worked for me. The first is VSO's DivxtoDVD, which has yet to produce an out-of-sync encode, regardless of audio source. That said, not everyone has been so lucky. I only use this when I want to put a lot on a disk (2.5 - 3 hours of content) because it's transcoding method makes for very small files without sacrificing quality (i.e. output same as source in most cases).

The better but longer route is to load the file into virtualdubmod (or whatever your favourite flavour is) and when prompted, DO NOT rewrite the header. Save the audio out as an uncompressed wav (90 minutes = around 900 MB, and less and you have compression in there somewhere). Use this as your audio track when authoring (or encoding if you do both at the same time). I use Sound Forge to create 2 channel AC3 output for stereo sources. This generally gives the better overall outcome as the video encoding can be tweaked, filters applied etc.

Like I said though, both have been successful for me without incident.

[Johnny_S]

Thanks for the help everyone. As soon as I get a chance I'll try these methods and get back. Fingers crossed they'll work.

[Johnny_S]

Thanks again people. I got DivxtoDVD and that worked a treat. Audio was in perfect sync on my DVD player. My only problem now is how to replicate this effect when burning my SVCD's, because DivxtoDVD only converts to DVD. So does anyone have any ideas as to how DivxtoDVD does its thing, and gets the audio in sync, so I can manually do the same in TMPGEnc.

(guns1inger, I also used your second method and burnt a test, using just a minute or two from the middle of the movie, where people were doing the most talking, by selecting source range in TMPGEnc's options when converting - would this have effected anything; should I instead just convert the whole thing and then burn to test the audio sync?)