[FFmpeg-trac] #2536(undetermined:new): qt raw 2/4bpp regression

[FFmpeg]

#2536: qt raw 2/4bpp regression
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:
                Version:  git-       |  undetermined
  master                             |               Keywords:  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  1          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Ticket #823 is reproducible again for some samples, reported by ami_stuff:
 The 2bit and 4bit samples from ticket #823 are broken since 6184fa2, I
 will attach a PoC to show that this may not be related to the rawvideo
 decoder.
 {{{
 $ ffmpeg -i 2bpp_129.mov out2.avi
 ffmpeg version N-52792-g7c23922 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on May  6 2013 01:09:09 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 29.100 / 52. 29.100
   libavcodec     55.  7.100 / 55.  7.100
   libavformat    55.  4.101 / 55.  4.101
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 63.101 /  3. 63.101
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2bpp_129.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2011-12-23 23:19:30
   Duration: 00:00:05.96, start: 0.000000, bitrate: 671 kb/s
     Stream #0:0(eng): Video: rawvideo (raw  / 0x20776172), pal8, 129x97,
 670 kb/s, 24 fps, 24 tbr, 600 tbn, 600 tbc
     Metadata:
       creation_time   : 2011-12-23 23:19:30
       handler_name    : Procedura obs�ugi skr�t�w danych Apple
 [mpeg4 @ 0x342c540] too many threads/slices (8), reducing to 7
 Output #0, avi, to 'out2.avi':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     ISFT            : Lavf55.4.101
     Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 129x97,
 q=2-31, 200 kb/s, 24 tbn, 24 tbc
     Metadata:
       creation_time   : 2011-12-23 23:19:30
       handler_name    : Procedura obs�ugi skr�t�w danych Apple
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
 Press [q] to stop, [?] for help
 [swscaler @ 0x34066a0] Warning: data is not aligned! This can lead to a
 speedloss
 frame=  143 fps=0.0 q=31.0 Lsize=     284kB time=00:00:05.95 bitrate=
 390.9kbits/s
 video:275kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 3.258414%
 }}}
 {{{
 $ ffmpeg -i 4bpp_129.mov out4.avi
 ffmpeg version N-52792-g7c23922 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on May  6 2013 01:09:09 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 29.100 / 52. 29.100
   libavcodec     55.  7.100 / 55.  7.100
   libavformat    55.  4.101 / 55.  4.101
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 63.101 /  3. 63.101
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '4bpp_129.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2011-12-23 23:19:54
   Duration: 00:00:05.96, start: 0.000000, bitrate: 1267 kb/s
     Stream #0:0(eng): Video: rawvideo (raw  / 0x20776172), pal8, 129x97,
 1266 kb/s, 24 fps, 24 tbr, 600 tbn, 600 tbc
     Metadata:
       creation_time   : 2011-12-23 23:19:54
       handler_name    : Procedura obs�ugi skr�t�w danych Apple
 [mpeg4 @ 0x2da22a0] too many threads/slices (8), reducing to 7
 Output #0, avi, to 'out4.avi':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     ISFT            : Lavf55.4.101
     Stream #0:0(eng): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 129x97,
 q=2-31, 200 kb/s, 24 tbn, 24 tbc
     Metadata:
       creation_time   : 2011-12-23 23:19:54
       handler_name    : Procedura obs�ugi skr�t�w danych Apple
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
 Press [q] to stop, [?] for help
 [swscaler @ 0x2d7c6c0] Warning: data is not aligned! This can lead to a
 speedloss
 frame=  143 fps=0.0 q=23.4 Lsize=     252kB time=00:00:05.95 bitrate=
 347.1kbits/s
 video:243kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 3.687037%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2536>
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