[FFmpeg-trac] #4954(avformat:open): joint stereo indicator missing from mp3 headers

FFmpeg trac at avcodec.org
Wed Sep 16 14:58:22 EEST 2020

#4954: joint stereo indicator missing from mp3 headers
             Reporter:  pico4743    |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  mp3         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by mrapp):

 Replying to [comment:4 Balling]:

 > But it decodes it correctly? Then why does this matter?

 Yes, but it misreports to the end-user.

 > If on the other hand we will add support for this will no it break other
 players or even hardware ones?

 how? joint-stereo is already enabled by default, but the header is not set
 to indicate it was used. that itself might lead to issues in some players.
 how can fixing this discrepancy lead to issues?

Ticket URL: <https://trac.ffmpeg.org/ticket/4954#comment:5>
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