[FFmpeg-trac] #7462(avformat:new): Select best cover art if multiple embedded

[FFmpeg]

#7462: Select best cover art if multiple embedded
----------------------------------+---------------------------------------
             Reporter:  cgbug     |                     Type:  enhancement
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+---------------------------------------
 File contains multiple covers. Wrong one is displayed in FFplay. The
 metadata comment value could be used as a hint which one should be
 preferred.

 Sample:
 https://www.datafilehost.com/d/6353053c

 {{{
 ffmpeg version N-92079-gb577153231 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 8.2.1 (GCC) 20180813
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-
 amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
 --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora
 --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg
 --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-
 libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex
 --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-
 ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec
 --enable-dxva2 --enable-avisynth
   libavutil      56. 19.101 / 56. 19.101
   libavcodec     58. 31.102 / 58. 31.102
   libavformat    58. 18.103 / 58. 18.103
   libavdevice    58.  4.104 / 58.  4.104
   libavfilter     7. 33.100 /  7. 33.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Input #0, mp3, from 'Tom Staar & Corey James - Bird Flu (Extended
 Mix).mp3':
   Metadata:
     album           : Bird Flu [
                     : vk.com/speeeedy]
     artist          : Tom Staar & Corey James
     TBPM            : 126
     comment         : Speeeedy EDM Blog - главный источник электронной
 музыки вконтакте!
                     : vk.com/speeeedy
     TIT1            : Cartel Music
     encoded_by      : Beatport
     TFLT            : MPG/3
     genre           : Tech House
     TKEY            : Fmaj
     TSRC            : NLZ541700206
     TORY            : 2017-05-01
     publisher       : Cartel Music
     lyrics-xxx      : Speeeedy EDM Blog - главный источник электронной
 музыки вконтакте!
                     : vk.com/speeeedy
     title           : Bird Flu (Extended Mix)
     track           : 01
     date            : 2017
   Duration: 00:04:58.81, start: 0.025056, bitrate: 328 kb/s
     Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 320 kb/s
     Metadata:
       encoder         : LAME3.97
     Side data:
       replaygain: track gain - -10.400000, track peak - unknown, album
 gain - unknown, album peak - unknown,
     Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
 500x500 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
     Metadata:
       comment         : Publisher/Studio logotype
     Stream #0:2: Video: png, pal8(pc), 1500x250, 90k tbr, 90k tbn, 90k tbc
     Metadata:
       comment         : A bright coloured fish
     Stream #0:3: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
 1000x1000 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
     Metadata:
       comment         : Cover (front)
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7462>
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