[FFmpeg-trac] #3893(avcodec:new): tiff decoder fails to decode yuv images with odd dimensions

FFmpeg trac at avcodec.org
Mon Aug 25 02:39:46 CEST 2014


#3893: tiff decoder fails to decode yuv images with odd dimensions
--------------------------------------+---------------------------------
               Reporter:  jamal       |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avcodec
                Version:  git-master  |               Keywords:  tif
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+---------------------------------
 Decoding output of attached file is broken with ffmpeg git, but not with
 libtiff 4.0.3

 {{{
 $ ./ffmpeg -i yuv-3c-8b.tiff out.bmp
 ffmpeg version N-65869-gcc0acdb Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Aug 24 2014 14:40:02 with gcc 4.9.1 (GCC)
   configuration: --enable-nonfree --enable-gpl --enable-libmp3lame
 --enable-libvorbis --enable-libopus --enable-libfdk-aac --enable-libx264
 --enable-libx265 --enable-libvpx --enable-libwebp --enable-cross-compile
 --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32
 --prefix=/mingw64
   libavutil      54.  7.100 / 54.  7.100
   libavcodec     56.  0.101 / 56.  0.101
   libavformat    56.  2.100 / 56.  2.100
   libavdevice    56.  0.100 / 56.  0.100
   libavfilter     5.  0.103 /  5.  0.103
   libswscale      3.  0.100 /  3.  0.100
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  0.100 / 53.  0.100
 Input #0, image2, from 'yuv-3c-8b.tiff':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: tiff, yuv420p, 157x151, 25 tbr, 25 tbn, 25 tbc
 Output #0, image2, to 'out.bmp':
   Metadata:
     encoder         : Lavf56.2.100
     Stream #0:0: Video: bmp, bgr24, 157x151, q=2-31, 200 kb/s, 25 fps, 25
 tbn, 25 tbc
     Metadata:
       encoder         : Lavc56.0.101 bmp
 Stream mapping:
   Stream #0:0 -> #0:0 (tiff (native) -> bmp (native))
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
 video:70kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}

 out.bmp looks completely broken, whereas with libtiff

 {{{
 $ tiff2rgba yuv-3c-8b.tiff out.tif
 }}}

 out.tif looks fine.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3893>
FFmpeg <https://ffmpeg.org>
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