Lost Audio Signals on DVDs

[AGenius]

I recently completed a project in Vegas Platinum Movie Studio, then I took the .MPG file through DVD Architect 3.0 to author and burn the dvd. Then when I go to play it, half the players play it right and the other half play only one of the audio tracks (the music track... the spoken narration track is left mute). I can't figure out why this is taking place. Is there a signal on the dvd that the players are not reading (or are reading)? Is there something missing that some players can compensate for (and some can't)? Is the problem in the video editing program (Vegas) or dvd authoring program (DVD Architect) or the discs themselves (Maxell DVD-R)?

[Baldrick]

what kind of audio? pcm wav, ac3 or mpeg audio?

[AGenius]

I'm not sure how to tell... but I think it's mpeg audio (after the video edit renders, it's an .mpg file). When i take it to DVD architect, everythings fine, and I don't see any indication of what kind of audio signal the file has.

[redwudz]

Try dropping one of the files into Gspot 2.52 and it should tell you the audio format. The audio is probably MPEG-1 Layer2, or AC3. Most players shouldn't have any problem with either, as long as they are within spec. A very few, mostly older players, may not like MPEG-1 Layer2. It might be PCM, but it would take up a lot of space with that format. If you look to the upper left for 'What is 'DVD, you will see what is required in a compliant DVD file. <<<<<<

You might be able to trace where the sound disappeared if you still have the original files you used to make the DVD, or at least see if the audio from the DVD is compliant.