[Ffmpeg-devel] [PATCH] non conformance to 3GP format (3GP TS 26.244 v 6.5.0 2006/06)

ffmpeg ffmpeg
Wed Jul 26 18:02:58 CEST 2006


Hello,

I would like to submit for review (and maybe integration) the following 
patch:


Purpose:  Fix some non conformance to 3GP format  (3GP TS 26.244 v 6.5.0 
2006/06)
Applies:   libavcodec/movenc.c {SVN 5720}, (test within trunk SVN 5726)
Testing:   
      - Regression test OK;
      - 3GP file check with some commercial 3gp analysis tools
      - play on QuickTime
      - play on HP OCMP Video 1.0
Authors:   Francois Draperi
Discussion:
    Some fields (like in 'samr' atom) are not set to 0; "3GP TS 26.244" 
enforces those values to be null.     
    The patch simply put 0 in the needed audio and video atom fields, for
    3GP files (and only them), and for AMR_NB mode (and only this codec).
    Maybe someone may also ask to restrict those changes to the '-strict 
very' mode, but is it useful ?

Hope that help
Francois Draperi.

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