how to change audio codec on xvid files

[dannyc]

I have some AVI (xvid) files which play fine on my PC but as soon as I burn them onto CD or DVD and play them on my standalone DivX player, they playback out of synch.

I have some similar AVIs which I have used as my "control" set when doing all this trial & error (and there's been plenty!) The files are practically identical, apart from the audio codecs which I checked in Gspot:

48000Hz 147 kb/s total (2 chnls) LAME3.92 - playback fine
44100Hz 109 kb/s total (2 chnls) - out of synch

I have also even tried converting the bad files to DVD using VSO DivXtoDVD but they even play back out of synch then as well!

Please can someone give me some idea of how to change the codec on my bad files to match the one on my good ones?

I also tried using this guide here because it seemed to be appropriate:
https://www.videohelp.com/avi2divx.htm

...but the synch went even worse!

I think maybe I'll need to extract a WAV from the bad files then rebuild the AVI but don't really know if there's a guide for that...? I did look, honest!

Thanks in advance,
Dan

[redwudz]

You can use VirtualDub to save out the audio as a WAV. I use VirtualDub Mod and put in the AVI, then select 'Streams > Stream List' and 'Save as WAV.' You can feed that into your encoder. Select the XVID for the video and the WAV for the sound. You can encode the audio to MPEG-1 Layer2. Or use ffmpegGUI to encode to AC3 which is a little more compact and compatible for DVDs.

EDIT: If the audio is MP3 VBR, that may be a lot of your problem. VirtualDub will tell you when you load the XVID. Then just save it out as above and this may fix your problem, if that's all that's wrong.