Mp4 video lost one stero channel

I am not sure where to ask this question so I will start here. Have CS 4.
Have an mp4 video clip. Video characteristics=mp4 movie, 1280x960 (1.0), alpha, 29.97 fps, pixel depth=24. Audio=48Khz, 16b stereo. Got these characteristics from Premier Pro.
When I play this clip, one of the two audio channels shows no signal at all on my PC. This same clip works fine on another PC and an Apple computer. I tried Premier Pro, Windows Media Player, DivX player and the Roxio player with same result. Using other clips like mp2, wmv, etc play stereo channels just fine. I do not have any other mp4 clips to test with. The only thing that comes to my mind is, am I missing a codec? One more strange thing. I played this clip on the other PC and used Roxio to generate a PCM wave file via the sound card. Same problem! The wave file plays fine on the other PC but not mine. Have run out of ideas.....any thoughts?

Joe,
Glad that you found the culprit and are now happily editing.
As for the thread, it might well prove useful to others, should they experience the same, or similar issue. The forums function on several levels: users post of problems, in hope of getting solutions; users come to the forums, and search for similar problems w/ solutions; users come to read, and in the course, they discover solutions and suggestions, and learn more about the programs in the process.
Thank you for posting what the cause of your problems was, as it should prompt others to check all connections.
Good luck,
Hunt
PS - in a similar vein, we have had several threads on 5.1 SS not playing on a home theater system from a burned DVD. In at least two cases, it was because the connections from the DVD player were not correct, going to the receiver, and in another, it was because the speaker output from the receiver was not done correctly. Moral: check those wires carefully.

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There's a fine line between genius and insanity.
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