[FFmpeg-trac] #4806(avformat:new): Segfault while writing Vorbis metadata

[FFmpeg]

#4806: Segfault while writing Vorbis metadata
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             Reporter:  turlando  |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 I'm trying to transcode a FLAC file (I've attached a sample media) to Ogg
 Vorbis through libvorbis but FFmpeg will segfault leaving a null size .ogg
 file in the working directory.

 It seems that it is unable to write the metadata section to the Ogg file.
 Stripping out all the Vorbis comments from the FLAC and trying again will
 result in a correct conversion.

 I've attached a backtrace too, which includes the command I'm running and
 the configure options.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4806>
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