[FFmpeg-trac] #9922(undetermined:closed): unexpected sample format of mp3

FFmpeg trac at avcodec.org
Mon Sep 12 20:54:42 EEST 2022

#9922: unexpected sample format of mp3
             Reporter:  Mia Sia      |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Changes (by Carl Eugen Hoyos):

 * keywords:  libmp3lame =>
 * resolution:   => invalid
 * status:  new => closed
 * component:  avformat => undetermined


 This is just how FFmpeg works: You cannot choose the sample format a
 particular decoder returns, you have to check what it returns. In the
 past, the sample formats some decoders returned changed (without a version
 bump) and for a given stream the sample format may change because of
 compile time options.
 Decoding to float is faster on many modern platforms, the mp3 decoder
 therefore outputs floats.
 libmp3lame accepts different input sample formats, some of them certainly
 faster than others.
Ticket URL: <https://trac.ffmpeg.org/ticket/9922#comment:1>
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