[FFmpeg-trac] #433(undetermined:new): add 2bpp support in png decoder

[FFmpeg]

#433: add 2bpp support in png decoder
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
 here is an 2bpp qt png sample

 {{{
 C:\>ffmpeg -i C:\2bpp.mov
 ffmpeg version N-32290-g6fc1299, Copyright (c) 2000-2011 the FFmpeg
 developers
   built on Sep  2 2011 00:40:00 with gcc 4.6.1
   configuration: --enable-gpl --enable-version3 --enable-memalign-hack
 --enable-
 runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r
 --enable-libo
 pencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-
 libgsm --
 enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-
 libschroedinger
  --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx
 --enabl
 e-libx264 --enable-libxavs --enable-libxvid --enable-zlib
   libavutil    51. 14. 0 / 51. 14. 0
   libavcodec   53. 12. 0 / 53. 12. 0
   libavformat  53. 10. 0 / 53. 10. 0
   libavdevice  53.  3. 0 / 53.  3. 0
   libavfilter   2. 37. 0 /  2. 37. 0
   libswscale    2.  0. 0 /  2.  0. 0
   libpostproc  51.  2. 0 / 51.  2. 0

 Seems stream 0 codec frame rate differs from container frame rate: 600.00
 (600/1
 ) -> 23.98 (24000/1001)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\2bpp.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2011-09-06 13:24:56
   Duration: 00:00:05.95, start: 0.000000, bitrate: 822 kb/s
     Stream #0.0(eng): Video: png (png  / 0x20676E70), pal8, 192x128, 820
 kb/s, 2
 4 fps, 23.98 tbr, 600 tbn, 600 tbc
     Metadata:
       creation_time   : 2011-09-06 13:24:56
 At least one output file must be specified
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/433>
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