how is dvd source audio determined to be stereo or mono?

[iamtehsux]

how is dvd source audio determined to be stereo or mono?

is you encoded a dvd source to xvid and gspot says the audio is joint stereo but someone says its supposed to be mono audio how do they determine that without the source dvd?

[manono]

You can usually tell from listening to it if it's true stereo or dual mono. If stereo you'll have different sounds from different speakers, especially during music passages; if mono it'll sound like it's coming from one spot in between the 2 speakers. If there's any question you convert to WAV and there are some graphs that can show if it's stereo or mono. DVD reviews can sometimes be helpful, and a historical knowledge of the film audio for different countries can be helpful as well.

GSpot saying it's joint stereo doesn't tell you a whole lot and is next to useless in this regard. You got propered, did you?