[FFmpeg-trac] #7465(avformat:new): MP3 24-bit (fmt:s32p) is displayed in the log, but the transcoded file is not

FFmpeg trac at avcodec.org
Mon Oct 1 16:11:51 EEST 2018


#7465: MP3 24-bit (fmt:s32p) is displayed in the log, but the transcoded file is
not
-------------------------------------+------------------------------------
             Reporter:  Sami32       |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  minor        |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  MP3 24-bit   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by Cigaes):

 MP3 “is” neither 16 nor 32 bits because MP3 does not store samples, it
 stores rounded Fourier coefficients.

 The output of FFmpeg tells you that libmp3lame will accept 32 bits samples
 and encode them to MP3, and later that the decoder will produce floating
 point samples. This is not a really useful information for a lossy codec.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7465#comment:5>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list