[M4IF Technotes] nhnt file

[Jean-Claude Dufourd]

Jim Bowen wrote:
> I was wondering if anyone had an NHNT file and its associated mp3 file??

Take any existing mp4, do:
mp4tool -export foo.mp4 4 media
to export track 4 of foo.mp4 to media.media, media.nhnt and media.info
> I assume that an audio file does not need a .info file, is this correct?

Yes
> Also something thats been bugging me, is an nhnt file part of the 
> standard?? or is it just something that needs to be there to use the 
> mp4tool?? It sounds like a hint track, but is there a strict definition 
> of how hint tracks should be composed??

It is a "mux hint" track. It is a "private standard" in an informal 
group of people implementing MPEG-4 within IM1 (MPEG-4 Systems reference 
software). It is only used by mp4tool but other people have tools that 
generate .nhnt and .info, eg people in the former SoNG project.
Best regards
JC
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Jean-Claude Dufourd       @======================================@
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