[FFmpeg-trac] #2155(avcodec:new): jpg 4:4:4 encoder does not work correctly with -flags gray

[FFmpeg]

#2155: jpg 4:4:4 encoder does not work correctly with -flags gray
--------------------------------------+---------------------------------
               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avcodec
                Version:  git-master  |               Keywords:  mjpeg
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
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 The output file shows artefacts.
 {{{
 $ ffmpeg -i tests/lena.pnm -flags gray -pix_fmt yuvj444p out.jpg
 ffmpeg version N-49005-g44d5a28 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jan 18 2013 20:45:11 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 15.100 / 52. 15.100
   libavcodec     54. 89.100 / 54. 89.100
   libavformat    54. 61.100 / 54. 61.100
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 32.100 /  3. 32.100
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, image2, from 'tests/lena.pnm':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: ppm, rgb24, 256x256, 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to 'out.jpg':
   Metadata:
     encoder         : Lavf54.61.100
     Stream #0:0: Video: mjpeg, yuvj444p, 256x256, q=2-31, 200 kb/s, 90k
 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (ppm -> mjpeg)
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 video:13kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.170226%
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2155>
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