[FFmpeg-devel] [PATCH] IFF ANIM support

[Piotr Bandurski]

Hi,

> The player I have shows same artefacts with AmigaRHQ sample.

AmigaRHQ doesn't decode here:

D:\>ffmpegm -i AmigaRHQ -b:v 2000k  out.avi
ffmpeg version 3.0.git Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.6.2 (GCC)
  configuration: --disable-pthreads --disable-ffprobe --enable-gpl
  libavutil      55. 18.100 / 55. 18.100
  libavcodec     57. 24.105 / 57. 24.105
  libavformat    57. 26.100 / 57. 26.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 34.100 /  6. 34.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
[iff @ 0212ce20] Warning: not compiled with thread support, using thread emulati
on
Input #0, iff, from 'AmigaRHQ':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: iff_ilbm (ANIM / 0x4D494E41), rgb0, 320x128, 20 fps, 60
tbr, 60 tbn, 60 tbc
[iff @ 0212dac0] Warning: not compiled with thread support, using thread emulati
on
[mpeg4 @ 024f0a20] Warning: not compiled with thread support, using thread emula
tion
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf57.26.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x128, q=2-31, 200
0 kb/s, 60 fps, 60 tbn, 60 tbc
    Metadata:
      encoder         : Lavc57.24.105 mpeg4
    Side data:
      cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:0 -> #0:0 (iff_ilbm (iff) -> mpeg4 (native))
Press [q] to stop, [?] for help
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 343 times
frame=    0 fps=0.0 q=0.0 Lsize=       6kB time=00:00:00.00 bitrate=N/A speed=
 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove
rhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters i
f used)
Conversion failed!


> What artifacts you see with BabySnakes?

Here is the output from VirtualDub and FFmpeg (with your patch):

http://www.datafilehost.com/d/6e60fb86

There are some visible black artefacts on the snakes.

Regards