qt tiff 2/4bpp grayscale regression

[ami_stuff]

​https://trac.ffmpeg.org/raw-attachment/ticket/417/TIFF_2bpp_grayscale.mov

​https://trac.ffmpeg.org/raw-attachment/ticket/417/TIFF_4bpp_grayscale.mov

C:\>ffmpeg -i TIFF_2bpp_grayscale.mov out.avi
ffmpeg version N-66012-g97b8809 Copyright (c) 2000-2014 the FFmpeg developers
  built on Sep  1 2014 00:07:41 with gcc 4.8.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  3.100 / 56.  3.100
  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, mov,mp4,m4a,3gp,3g2,mj2, from 'TIFF_2bpp_grayscale.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2011-08-24 18:55:16
  Duration: 00:00:00.33, start: 0.000000, bitrate: 9279 kb/s
    Stream #0:0(eng): Video: tiff (tiff / 0x66666974), gray, 640x480 [SAR 1:1 DA
R 4:3], 9258 kb/s, 15 fps, 15 tbr, 15 tbn, 15 tbc (default)
    Metadata:
      creation_time   : 2011-08-24 18:55:16
      handler_name    : Procedura obs│ugi skrˇtˇw danych Apple
      encoder         : TIFF
Output #0, avi, to 'out.avi':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    ISFT            : Lavf56.3.100
    Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 640x480 [SAR 1:
1 DAR 4:3], q=2-31, 200 kb/s, 15 fps, 15 tbn, 15 tbc (default)
    Metadata:
      creation_time   : 2011-08-24 18:55:16
      handler_name    : Procedura obs│ugi skrˇtˇw danych Apple
      encoder         : Lavc56.1.100 mpeg4
Stream mapping:
  Stream #0:0 -> #0:0 (tiff (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
frame=    5 fps=0.0 q=4.5 Lsize=     291kB time=00:00:00.33 bitrate=7153.8kbits/
s
video:285kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o
verhead: 2.013046%

[Carl Eugen Hoyos]

Regression since 61b9ce00

[Benoit Fouet]

Fixed in 4f10495055edc009ceaff8b5b69c90fd665698e1

[Carl Eugen Hoyos]

Fixed by Benoit Fouet in 4f104950