[FFmpeg-trac] #8763(undetermined:new): ffmpeg doesn't output lame vbr header correctly

FFmpeg trac at avcodec.org
Mon Jun 29 20:57:39 EEST 2020


#8763: ffmpeg doesn't output lame vbr header correctly
-------------------------------------+-------------------------------------
             Reporter:  spotter      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by spotter):

 built with ./configure --enable-libmp3lame && make (configure lists mp3 as
 a decoder, but not as encoder)

 ffmpeg version N-98341-gcca982ee01

 ./ffmpeg -i input.flac -codec:a libmp3lame -q:a 0 /tmp/test2.mp3

 while they don't return the same exact bits (md5sums differ), the ffmpeg
 files are the same exact sizes and it has the same xing header issue.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8763#comment:2>
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