Quote:
Originally Posted by Nexin
MP4 Inspector looks very interesting, is there a version that works offline, all I'm seeing are online versions.
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https://sourceforge.net/projects/mp4-inspector/files/
Quote:
Originally Posted by Nexin
Audio Tag FF only in valid in WAV/AVI which brings back the problem when AVI after virtualdub is then muxed into an mp4 or other container then many softwares don't like the video complain of the audio Tag FF unknown.
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It would be the task of the AVI/WAV
demuxing (splitting) software/library to recognize the TwoCC
0xFF as AAC stream and then extract the "raw" AAC data from the AVI/WAV container.
Beyond that point, the original TwoCC has
no meaning. The "raw" AAC data (e.g. ADTS), once extracted from the AVI/WAV container, has
no such thing as TwoCC.
Finally, it would be the task of the MP4
muxing software/library to set up the MP4 file correctly for the AAC stream. Which TwoCC value was stored in the WAV/AVI file, where the "raw" AAC data originally came from, shouldn't matter here, because MP4 has
no such thing – the MP4 muxer generally doesn't know the original TwoCC value, nor does it need to. The MP4 muxer
does (should) know how to correctly embed an AAC stream into the MP4 container, though.