[FFmpeg-trac] #3623(undetermined:new): Mixed results writing M4A metadata

FFmpeg trac at avcodec.org
Thu May 8 05:25:08 CEST 2014

#3623: Mixed results writing M4A metadata
             Reporter:  svnpenn      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Given this file
 I am having mixed results writing metadata. For example these commands

 ffmpeg -i superuser.mp4 -c copy good.aac
 ffmpeg -i good.aac -c copy -bsf aac_adtstoasc -metadata title=Confetti \
   -movflags faststart good.m4a

 Will generate an M4A file that plays correctly with metadata that is
 recognized. However this command

 ffmpeg -i superuser.mp4 -c copy -vn -movflags faststart \
   -metadata title=Confetti bad.m4a

 Generates a file that plays correctly, but my player does not recognize
 metadata. Note I also tried adding `-bsf aac_adtstoasc` to the bad command
 to no
 avail. How can I tweak the second command to get it working?

 Command-line output

 Source question

Ticket URL: <https://trac.ffmpeg.org/ticket/3623>
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