[FFmpeg-trac] #4003(undetermined:new): Defect in mp3 demuxer when extracting images from id3 tags.

[FFmpeg]

#4003: Defect in mp3 demuxer when extracting images from id3 tags.
-------------------------------------+-------------------------------------
             Reporter:  c-14         |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 When extracting the image from certain mp3s the EOI isn't found correctly
 and only a part of the image is extracted:
 How to reproduce:
 {{{
 C:\Users\Phoenix>C:\ffmpeg-20140916-git-
 b76d613-win64-static\bin\ffmpeg.exe -i E:\Music\vk\fcb1507af7cb.mp3 -c:v
 copy C:\test\output.jpeg
 ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Sep 15 2014 22:11:04 with gcc 4.8.3 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
 --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
 --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-librtmp --enable-libschroedinger --enable-
 libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-
 libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
 libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-
 libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-
 decklink --enable-zlib
   libavutil      54.  7.100 / 54.  7.100
   libavcodec     56.  1.100 / 56.  1.100
   libavformat    56.  4.101 / 56.  4.101
   libavdevice    56.  0.100 / 56.  0.100
   libavfilter     5.  1.100 /  5.  1.100
   libswscale      3.  0.100 /  3.  0.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  0.100 / 53.  0.100
 [mjpeg @ 00000000042b89c0] overread 8
 [mjpeg @ 00000000042b89c0] EOI missing, emulating
 [mp3 @ 00000000042b7aa0] Estimating duration from bitrate, this may be
 inaccurate
 Input #0, mp3, from 'E:\Music\vk\fcb1507af7cb.mp3':
   Metadata:
     TLEN            : 212000
   Duration: 00:03:32.83, start: 0.000000, bitrate: 129 kb/s
     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
     Stream #0:1: Video: mjpeg, yuvj444p(pc, bt470bg), 200x200 [SAR 100:100
 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
     Metadata:
       title           :
       comment         : Other
 Output #0, image2, to 'C:\test\output.jpeg':
   Metadata:
     TLEN            : 212000
     encoder         : Lavf56.4.101
     Stream #0:0: Video: mjpeg, yuvj444p, 200x200 [SAR 100:100 DAR 1:1],
 q=2-31,
 90k tbn, 90k tbc
     Metadata:
       title           :
       comment         : Other
 Stream mapping:
   Stream #0:1 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A
 video:14kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 ffmpeg version N-66289-gb76d613 Copyright (c) 2000-2014 the FFmpeg
 developers
 built on Sep 15 2014 22:11:04 with gcc 4.8.3 (GCC)
 }}}
 This output doesn't come directly from me, but from a user for whom I'm
 submitting this bug report. I do have the sample as well and can confirm
 his findings with that file as far as FFmpeg is concerned. He told me that
 he was able to correctly extract the image using a different program, so I
 believe it is a deficiency in FFmpeg and not a problem with the source.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4003>
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