[FFmpeg-trac] #2072(undetermined:new): mjpeg: progressive with quality<24 fails to decode

FFmpeg trac at avcodec.org
Thu Dec 27 20:24:47 CET 2012


#2072: mjpeg: progressive with quality<24 fails to decode
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 created with:

 {{{
 cjpeg -targa -quality 23 -progressive test.tga >1.jpg
 }}}

 {{{
 C:\>ffmpeg -i 1.jpg out.bmp
 ffmpeg version N-48228-gceee440 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Dec 27 2012 02:22:24 with gcc 4.5.0 (GCC) 20100414 (Fedora
 MinGW 4.5.
 0-1.fc14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
 cpudetect
 --enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -
 lwinmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snap
 shots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/s
 napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3
 --enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-
 libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-
 libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable-
 decoder=libvpx
   libavutil      52. 12.100 / 52. 12.100
   libavcodec     54. 81.100 / 54. 81.100
   libavformat    54. 50.102 / 54. 50.102
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 30.101 /  3. 30.101
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [mjpeg @ 0x1eff600] dqt: 16bit precision
 [mjpeg @ 0x1eff600] error count: 268435456
 [mjpeg @ 0x1eff600] error y=31 x=23
 Input #0, image2, from '1.jpg':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: mjpeg, yuvj420p, 1024x768 [SAR 1:1 DAR 4:3], 25
 tbr, 25
 tbn, 25 tbc
 Output #0, image2, to 'out.bmp':
   Metadata:
     encoder         : Lavf54.50.102
     Stream #0:0: Video: bmp, bgr24, 1024x768 [SAR 1:1 DAR 4:3], q=2-31,
 200 kb/s
 , 90k tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mjpeg -> bmp)
 Press [q] to stop, [?] for help
 [mjpeg @ 0x1eff600] dqt: 16bit precision
 [mjpeg @ 0x1eff600] error count: 268435456
 [mjpeg @ 0x1eff600] error y=31 x=23
 frame=    1 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=
 0.0kbits/
 s
 video:2304kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.000000
 %
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2072>
FFmpeg <http://ffmpeg.org>
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