[FFmpeg-trac] #717(avcodec:new): AVFrame->format field not set when decoding audio

FFmpeg trac at avcodec.org
Wed Dec 7 20:51:28 CET 2011

#717: AVFrame->format field not set when decoding audio
             Reporter:  Markus   |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  unspecified
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
 According to header documentation, the AVFrame format field should contain
 a value of type "enum AVSampleFormat" for audio data, but it is always -1
 when calling avcodec_decode_audio4 (verified only for mpeg audio, but a
 quick code look up makes be belief this is true for all other decoders as

 Since this value is present in the AVCodecContext field "sample_fmt", it
 would be easy to just copy it from there to the decoded AVFrame, just as
 this already happens for avcodec_decode_video2 (where pix_fmt is copied

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/717>
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