I have a source file that is 960x528 and has AC3/5 channel/384kb/s audio..(according to GSpot)

I am lowering the resolution to watch on my DVP642
When I open this file up in AVI Recomp or AutoGK, it only shows as AC3 2 channel.

After the conversion runs I check with Gspot and AVIRecomp and AutoGK and they all show AC3 5.1 channels....

Why doesn't the original source file show 5 channels in AutoGK or AVIRecomp??

thx
Bama