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I assume this has to do with codec issues?

EDIT: I'm sorry, let me clarify. I can open mp4 files with VLC, I just have no video. Just a black screen. BUT I do hear the audio just fine.

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up vote 2 down vote accepted

Probably the upgrade broke something? I'd suggest you to uninstall VLC, reboot, and install the latest VLC and try playing an MP4 again.

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Agreed: VLC contains its own codecs, so this is not a codec issue, but a bad VLC installation issue – harrymc Nov 11 '09 at 20:17
I took your suggestion, uninstalled, and re-installed fresh. Still having the same problems with mp4s. Every other media plays just fine in VLC though. Any other suggestions? – NoCatharsis Nov 13 '09 at 17:49

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