[FFmpeg-trac] #1994(undetermined:new): mov enc: fix gray8 in mov

[FFmpeg]

#1994: mov enc: fix gray8 in mov
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 Curently gray8 rawvideo exported to mov is decoded incorrectly by qt
 because qt expect bits_per_coded_sample to be set to 0x28 and not 0x08 as
 it is now.

 Attached patch fixes this problem, but there is still another issue -
 gray8 is decoded in negative by qt.

 {{{
 C:\>ffmpeg -i 160.bmp -vcodec rawvideo -pix_fmt gray out.mov
 ffmpeg version N-47325-gb90e795 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Dec  1 2012 02:23:25 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. 10.100 / 52. 10.100
   libavcodec     54. 78.100 / 54. 78.100
   libavformat    54. 41.100 / 54. 41.100
   libavdevice    54.  3.101 / 54.  3.101
   libavfilter     3. 23.104 /  3. 23.104
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.101 /  0. 17.101
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, image2, from '160.bmp':
   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: bmp, bgr24, 160x120, 25 tbr, 25 tbn, 25 tbc
 Output #0, mov, to 'out.mov':
   Metadata:
     encoder         : Lavf54.41.100
     Stream #0:0: Video: rawvideo (raw  / 0x20776172), gray, 160x120,
 q=2-31, 200
  kb/s, 12800 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (bmp -> rawvideo)
 Press [q] to stop, [?] for help
 frame=    1 fps=0.0 q=0.0 Lsize=      19kB time=00:00:00.04
 bitrate=3985.2kbits/
 s
 video:19kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 3.781250%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1994>
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