[FFmpeg-trac] #875(undetermined:new): ljpeg: support files with interval in MCU-rows different than 0

[FFmpeg]

#875: ljpeg: support files with interval in MCU-rows different than 0
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
 I will attache ljpeg files with "restart interval in MCU-rows" option set
 to 0, 1, 25 and 50. Currently FFmpeg can correctly decode files when this
 option is set to 0.

 I created attached files with "ImageConverter Plus" and then loaded them
 to "PICTools Apollo" to confirm that the files are correct.

 {{{
 ffmpeg -i mcu50.jpg out.tif
 ffmpeg version 0.9.0.git-dc7ad85, Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jan  4 2012 22:15:52 with gcc 4.5.0
   libavutil      51. 34.100 / 51. 34.100
   libavcodec     53. 50.100 / 53. 50.100
   libavformat    53. 29.100 / 53. 29.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 57.101 /  2. 57.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
   libpostproc    51.  2.100 / 51.  2.100
 [mjpeg @ 0x11573ab0] Warning: not compiled with thread support, using
 thread emulation
 Input #0, image2, from 'mcu50.jpg':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
 Codec 0x8 is not in the full list.
     Stream #0:0: Video: mjpeg, bgr24, 639x479, 25 tbr, 25 tbn, 25 tbc
 Incompatible pixel format 'bgr24' for codec 'tiff', auto-selecting format
 'rgb24'
 [buffer @ 0x11576330] w:639 h:479 pixfmt:bgr24 tb:1/1000000 sar:0/1
 sws_param:
 [buffersink @ 0x115766b0] auto-inserting filter 'auto-inserted scale 0'
 between the filter 'src' and the filter 'out'
 [scale @ 0x11576c30] w:639 h:479 fmt:bgr24 -> w:639 h:479 fmt:rgb24
 flags:0x4
 [tiff @ 0x115752b0] Warning: not compiled with thread support, using
 thread emulation
 [mjpeg @ 0x11573ab0] Warning: not compiled with thread support, using
 thread emulation
 Output #0, image2, to 'out.tif':
   Metadata:
     encoder         : Lavf53.29.100
 Codec 0x62 is not in the full list.
     Stream #0:0: Video: tiff, rgb24, 639x479, q=2-31, 200 kb/s, 90k tbn,
 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mjpeg -> tiff)
 Press [q] to stop, [?] for help
 frame=    1 fps=  0 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=
 0.0kbits/s
 video:905kB audio:0kB global headers:0kB muxing overhead -100.000000%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/875>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker