[FFmpeg-trac] #6602(undetermined:new): Can't set or remove encoder metadata

[FFmpeg]

#6602: Can't set or remove encoder metadata
-------------------------------------+-------------------------------------
             Reporter:  Psychonaut   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: According to the man page, the -metadata option can be
 used to set or remove the encoder tag on the output file.  However, this
 doesn't work; ffmpeg always adds an encoder tag with the value
 "Lavf57.71.100".

 How to reproduce:
 {{{
 % ffmpeg -i foo.ogg -acodec copy -metadata encoder='baz' bar.ogg
 ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
   built with gcc 7 (SUSE Linux)
   configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-
 gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong
 -funwind-tables -fasynchronous-unwind-tables -g' --optflags='-fmessage-
 length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-
 protector-strong -funwind-tables -fasynchronous-unwind-tables -g'
 --disable-htmlpages --enable-pic --disable-stripping --enable-shared
 --disable-static --enable-gpl --disable-openssl --enable-avresample
 --enable-libcdio --enable-gnutls --enable-ladspa --enable-libass --enable-
 libbluray --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-
 libfreetype --enable-libgsm --enable-libopenjpeg --enable-libopus
 --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-
 libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-
 netcdf --enable-vaapi --enable-vdpau --enable-libfdk_aac --enable-nonfree
 --enable-libmp3lame --enable-libtwolame --enable-libx264 --enable-libx265
 --enable-libxvid
   libavutil      55. 58.100 / 55. 58.100
   libavcodec     57. 89.100 / 57. 89.100
   libavformat    57. 71.100 / 57. 71.100
   libavdevice    57.  6.100 / 57.  6.100
   libavfilter     6. 82.100 /  6. 82.100
   libavresample   3.  5.  0 /  3.  5.  0
   libswscale      4.  6.100 /  4.  6.100
   libswresample   2.  7.100 /  2.  7.100
   libpostproc    54.  5.100 / 54.  5.100
 Input #0, ogg, from 'foo.ogg':
   Duration: 00:02:42.54, start: 0.000000, bitrate: 107 kb/s
     Stream #0:0: Audio: vorbis, 44100 Hz, stereo, fltp, 128 kb/s
     Metadata:
       ARTIST          : Tristan Miller
       DATE            : 1997
       COMPOSER        : Roy Glover
       comment         : http://www.nothingisreal.com/
       GENRE           : C64 Remix
       LICENSE         : http://www.nothingisreal.com/
       PERFORMER       : Roy Glover
       REPLAYGAIN_ALBUM_GAIN: -6.73 dB
       REPLAYGAIN_ALBUM_PEAK: 1.12150097
       REPLAYGAIN_TRACK_GAIN: -6.73 dB
       REPLAYGAIN_TRACK_PEAK: 1.12150097
       TITLE           : M.U.L.E. (Boogie Addiction Mix)
     Side data:
       replaygain: track gain - -6.730000, track peak - 0.000026, album
 gain - -6.730000, album peak - 0.000026,
 Output #0, ogg, to 'bar.ogg':
   Metadata:
     encoder         : Lavf57.71.100
     Stream #0:0: Audio: vorbis, 44100 Hz, stereo, fltp, 128 kb/s
     Metadata:
       ARTIST          : Tristan Miller
       DATE            : 1997
       COMPOSER        : Roy Glover
       DESCRIPTION     : http://www.nothingisreal.com/
       GENRE           : C64 Remix
       LICENSE         : http://www.nothingisreal.com/
       PERFORMER       : Roy Glover
       REPLAYGAIN_ALBUM_GAIN: -6.73 dB
       REPLAYGAIN_ALBUM_PEAK: 1.12150097
       REPLAYGAIN_TRACK_GAIN: -6.73 dB
       REPLAYGAIN_TRACK_PEAK: 1.12150097
       TITLE           : M.U.L.E. (Boogie Addiction Mix)
       encoder         : Lavf57.71.100
     Side data:
       replaygain: track gain - -6.730000, track peak - 0.000026, album
 gain - -6.730000, album peak - 0.000026,
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=    2132kB time=00:02:42.53 bitrate= 107.4kbits/s speed=6.35e+03x
 video:0kB audio:2106kB subtitle:0kB other streams:0kB global headers:4kB
 muxing overhead: 1.229537%
 }}}

 Attached is the console output of the above command with "-v 9 -loglevel
 99".

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6602>
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