[FFmpeg-trac] #841(undetermined:new): png (gray16be) to cljr (yuv411p) - some black artifacts

[FFmpeg]

#841: png (gray16be) to cljr (yuv411p) - some black artifacts
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 {{{
 C:\>ffmpeg -i png16_example.png -vcodec cljr out.avi
 ffmpeg version N-36193-gf514695, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Dec 26 2011 17:50:37 with gcc 4.6.2
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-ru
 ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-
 libope
 ncore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --en
 able-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger -
 -enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-
 amrwben
 c --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs
 --enable-
 libxvid --enable-zlib
   libavutil      51. 33.100 / 51. 33.100
   libavcodec     53. 48.100 / 53. 48.100
   libavformat    53. 28.100 / 53. 28.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 54.100 /  2. 54.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
   libpostproc    51.  2.100 / 51.  2.100
 Input #0, image2, from 'png16_example.png'
 :
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: png, gray16be, 512x512, 25 tbr, 25 tbn, 25 tbc
 Incompatible pixel format 'gray16be' for codec 'cljr', auto-selecting
 format 'yu
 v411p'
 [buffer @ 020F14C0] w:512 h:512 pixfmt:gray16be tb:1/1000000 sar:0/1
 sws_param:
 [buffersink @ 020F1740] auto-inserting filter 'auto-inserted scale 0'
 between th
 e filter 'src' and the filter 'out'
 [scale @ 020F1BC0] w:512 h:512 fmt:gray16be -> w:512 h:512 fmt:yuv411p
 flags:0x4

 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf53.28.100
     Stream #0:0: Video: cljr (CLJR / 0x524A4C43), yuv411p, 512x512,
 q=2-31, 200
 kb/s, 25 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (png -> cljr)
 Press [q] to stop, [?] for help
 frame=    1 fps=  0 q=0.0 Lsize=     262kB time=00:00:00.04
 bitrate=53570.0kbits
 /s
 video:256kB audio:0kB global headers:0kB muxing overhead 2.176666%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/841>
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