[FFmpeg-trac] #7623(avcodec:new): Wrong interpretation of (m)jpeg aspect ratio

[FFmpeg]

#7623: Wrong interpretation of (m)jpeg aspect ratio
--------------------------------------+-----------------------------------
             Reporter:  UlfZibis      |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avcodec
              Version:  git-master    |               Resolution:
             Keywords:  mjpeg aspect  |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
--------------------------------------+-----------------------------------

Comment (by UlfZibis):

 {{{
 $ ~/Projects/ffmpeg/ffmpeg-git-20181218-amd64-static/ffmpeg -i
 CYD_t-15.mp4 -ss 00:05 -frames:v 1 CYD_2.jpg
 ffmpeg version N-47741-ga1f0dd24f6-static
 https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
 --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-
 gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf
 --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband
 --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus
 --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-
 libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
   libavutil      56. 24.101 / 56. 24.101
   libavcodec     58. 42.102 / 58. 42.102
   libavformat    58. 24.101 / 58. 24.101
   libavdevice    58.  6.101 / 58.  6.101
   libavfilter     7. 46.101 /  7. 46.101
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5eceb00] Could not find codec parameters for
 stream 0 (Video: h264 (avc1 / 0x31637661), none, 704x576, 830 kb/s):
 unspecified pixel format
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'CYD_t-15.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.24.101
   Duration: 00:00:15.00, start: 0.000000, bitrate: 660 kb/s
     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none, 704x576, 830
 kb/s, SAR 12:11 DAR 4:3, 25 fps, 25 tbr, 12800 tbn, 25600 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo,
 fltp, 114 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
 Press [q] to stop, [?] for help
 [swscaler @ 0x5f0e800] deprecated pixel format used, make sure you did set
 range correctly
 Output #0, image2, to 'CYD_2.jpg':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.24.101
     Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 704x576 [SAR 12:11 DAR
 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.42.102 mjpeg
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
 frame=    1 fps=0.0 q=4.9 Lsize=N/A time=00:00:00.04 bitrate=N/A dup=1
 drop=1 speed=0.167x
 video:39kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7623#comment:6>
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