[FFmpeg-trac] #2973(FFprobe:new): 'ffmpeg -i' print SAR instead of PAR

[FFmpeg]

#2973: 'ffmpeg -i' print SAR instead of PAR
-------------------------------------+-------------------------------------
             Reporter:  jofsey       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  FFprobe      |                  Version:  2.0.1
             Keywords:  aspect-      |               Blocked By:
  ratio, sar, par                    |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 If my knowledge is correct, SAR (Storage Aspect Ratio) is the ratio of
 pixel dimensions. For example, a 640 × 480 video has a SAR of 640/480 =
 4:3.

 Whereas PAR (Pixel Aspect Ratio) is ratio of pixel height and width, and
 most of modern videos have square PAR (1:1).

 But when I tried to check it with `ffmpeg -i` or ffprobe, I got square SAR
 instead of square PAR for all test videos.

 How to reproduce:
 {{{
 % ffprobe 3867805782.mp4
 ffprobe version 2.0.1 Copyright (c) 2007-2013 the FFmpeg developers
   built on Aug 11 2013 14:52:28 with gcc 4.8.1 (GCC) 20130725 (prerelease)
   configuration: --prefix=/usr --disable-debug --disable-static --enable-
 avresample --enable-dxva2 --enable-fontconfig --enable-gpl --enable-libass
 --enable-libbluray --enable-libfreetype --enable-libgsm --enable-
 libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-
 libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse
 --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-
 libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-
 libx264 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-
 cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-
 version3 --enable-x11grab
   libavutil      52. 38.100 / 52. 38.100
   libavcodec     55. 18.102 / 55. 18.102
   libavformat    55. 12.100 / 55. 12.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 79.101 /  3. 79.101
   libavresample   1.  1.  0 /  1.  1.  0
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3867805782.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf54.6.100
   Duration: 00:00:07.97, start: 0.000000, bitrate: 428 kb/s
     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 309 kb/s, 29.97 fps,
 29.97 tbr, 2997 tbn, 59.94 tbc
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 115 kb/s
     Metadata:
       handler_name    : SoundHandler

 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2973>
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