> I’m assuming, based on the error description that the problem might be with my mp4 decoder/codec, but I have no idea how to get around this and searching on the net has yielded no answer for me.
A simple search here for the word “DivX” would have gotten your answer from any number of posts that we get week after week:
Vegas does not support DivX or XviD!
Stop using it, and your problem will go away.
~jr
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