[FFmpeg-trac] #9140(ffmpeg:reopened): aac gapless fail

FFmpeg trac at avcodec.org
Thu Sep 16 18:33:02 EEST 2021

#9140: aac gapless fail
             Reporter:  Guy Sivey    |                    Owner:  (none)
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:  ffmpeg
              Version:  unspecified  |               Resolution:
             Keywords:  aac gapless  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Comment (by Guy Sivey):

 Replying to [comment:7 Balling]:
 > Ffmpeg does not support iTunSMPB tag

 Thanks for that information, Balling. I don't understand all of what you
 said, but I understand that iTunes creates mp3/m4a files which are not
 fully supported by ffmpeg, which is a bit of a shock to me. I am guessing
 that ffmpeg supports some kind of industry standard for making
 mp3/m4a(aac) gapless work, and that it is Apple who is out of line. How
 can I identify if my files follow this standard, and is there a
 recommended encoder which will follow this standard? LAME for mp3, I
 guess, but what for aac?
Ticket URL: <https://trac.ffmpeg.org/ticket/9140#comment:8>
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