I'm working on MP4 muxing software that takes input from a hardware H.264 encoder and AAC-LC encoder. The file I produce plays OK in VLC, but audio is silent in Quicktime or when loading into Sony Vegas. If I "convert" the file through VLC to another .mp4, or use Handbrake to convert it, then audio works in Quicktime or Vegas from the resulting file.
Here is an example file I produced (8MB, 5 sec) which demonstrates the problem. http://www.filedropper.com/shortrdfrecwithaudio_1
I'm picking through mp4 box headers at the moment playing spot-the-difference but not coming up with much.
Any clues on debugging this, useful analysis utilities etc, would be welcome.
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Last edited by bat999; 18th Jun 2012 at 08:55.