[FFmpeg-trac] #2041(avcodec:new): Artefacts when encoding to yuvj444p mjpeg

[FFmpeg]

#2041: Artefacts when encoding to yuvj444p mjpeg
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avcodec
                Version:  git-       |               Keywords:  mjpeg
  master                             |  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 The output file shows purple artefacts, from a user's perspective, this is
 a regression.
 {{{
 $ ffmpeg -i tests/lena.pnm -s 254x254 out.jpg
 ffmpeg version N-47942-g8b63744 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Dec 18 2012 09:40:55 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 12.100 / 52. 12.100
   libavcodec     54. 80.100 / 54. 80.100
   libavformat    54. 49.102 / 54. 49.102
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 27.102 /  3. 27.102
   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         : Lavf54.49.102
     Stream #0:0: Video: mjpeg, yuvj444p, 254x254, 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=       0kB time=00:00:00.04 bitrate=
 0.0kbits/s
 video:15kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.000000%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2041>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker