[FFmpeg-trac] #1517(undetermined:new): Pixel format autoselection does not choose wisely for yuvj420p

[FFmpeg]

#1517: Pixel format autoselection does not choose wisely for yuvj420p
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 If the input pixel format is yuvj420p, pixel format autoselection prefers
 yuv410p over yuv420p
 {{{
 $ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov -vcodec ffv1 -an
 outffv1.avi
 ffmpeg version N-42365-g36b2bd9 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jul  9 2012 14:02:18 with gcc 4.3.2
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-
 libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame
 --enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs
   libavutil      51. 64.100 / 51. 64.100
   libavcodec     54. 33.100 / 54. 33.100
   libavformat    54. 15.102 / 54. 15.102
   libavdevice    54.  1.100 / 54.  1.100
   libavfilter     3.  1.100 /  3.  1.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8fc73c0] max_analyze_duration 5000000 reached
 at 5000998
 Guessed Channel Layout for  Input Stream #0.1 : mono
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fate-
 suite/svq3/Vertical400kbit.sorenson3.mov':
   Metadata:
     creation_time   : 1931-02-13 09:49:02
     title           : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     artist          : Logan Kelsey
     artist-eng      : Logan Kelsey
     copyright       : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     encoder         : Sorenson Video 3
     encoder-eng     : Sorenson Video 3
   Duration: 00:00:43.57, start: 0.000000, bitrate: 580 kb/s
     Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 320x240,
 391 kb/s, 30.02 fps, 30 tbr, 600 tbn, 600 tbc
     Metadata:
       creation_time   : 1931-02-13 09:49:02
       handler_name    : Apple Alias Data Handler
     Stream #0:1(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 44100 Hz,
 mono, s16, 176 kb/s
     Metadata:
       creation_time   : 1931-02-13 09:49:02
       handler_name    : Apple Alias Data Handler
 [graph 0 input from stream 0:0 @ 0x8fce860] w:320 h:240 pixfmt:yuvj420p
 tb:1/600 fr:30/1 sar:0/1 sws_param:flags=2
 [output stream 0:0 @ 0x8fce9a0] No opaque field provided
 [auto-inserted scaler 0 @ 0x8fcedc0] w:320 h:240 fmt:yuvj420p sar:0/1 ->
 w:320 h:240 fmt:yuv410p sar:0/1 flags:0x4
 Output #0, avi, to 'outffv1.avi':
   Metadata:
     encoder-eng     : Sorenson Video 3
     INAM            : Vertical Online SV3 Demo
     title-eng       : Vertical Online SV3 Demo
     IART            : Logan Kelsey
     artist-eng      : Logan Kelsey
     ICOP            : © Vertical Online 2001
     copyright-eng   : © Vertical Online 2001
     ISFT            : Lavf54.15.102
     Stream #0:0(eng): Video: ffv1 (FFV1 / 0x31564646), yuv410p, 320x240,
 q=2-31, 200 kb/s, 30 tbn, 30 tbc
     Metadata:
       creation_time   : 1931-02-13 09:49:02
       handler_name    : Apple Alias Data Handler
 Stream mapping:
   Stream #0:0 -> #0:0 (svq3 -> ffv1)
 Press [q] to stop, [?] for help
 frame= 1308 fps=195 q=0.0 Lsize=   21446kB time=00:00:43.60
 bitrate=4029.5kbits/s
 video:21409kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.172619%
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1517>
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