[FFmpeg-trac] #4706(documentation:open): av_guess_codec ignores short_name, filename, and mime_type

FFmpeg trac at avcodec.org
Thu Jul 9 11:27:52 CEST 2015

#4706: av_guess_codec ignores short_name, filename, and mime_type
             Reporter:  andrewrk     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  minor        |                Component:
              Version:  git-master   |  documentation
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by cehoyos):

 Replying to [comment:4 andrewrk]:
 > > My original interpretation of this ticket was that you argued that the
 > > parameter of av_guess_codec() should have precedence over the fmt
 parameter. Was I
 > > correct?
 > No. The title of the ticket is correct as well as my clarified code

 In your second example you pass an AVOutputFormat pointer as fmt parameter
 to av_guess_codec() that was already initialized with codec libvorbis (the
 default codec for ogg files if libvorbis was enabled). Why should this
 codec be overwritten if this is neither the documented behaviour of
 av_guess_codec() nor the behaviour since this function exists?

Ticket URL: <https://trac.ffmpeg.org/ticket/4706#comment:6>
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