id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
2240	xvid: visible artefects	ami_stuff		"there are visible artefacts on the car at the end of the video

the file decodes ok with xvid codec

attached patch ""fixes"" the problem

http://samples.mplayerhq.hu/V-codecs/MPEG4/color16.avi

{{{
C:\>ffmpeg -i color16.avi out.avi
ffmpeg version N-48610-gb23aff6 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jan  8 2013 02:37:29 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. 13.100 / 52. 13.100
  libavcodec     54. 86.100 / 54. 86.100
  libavformat    54. 59.106 / 54. 59.106
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 32.100 /  3. 32.100
  libswscale      2.  1.103 /  2.  1.103
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, avi, from 'color16.avi':
  Duration: 00:00:04.68, start: 0.000000, bitrate: 2583 kb/s
    Stream #0:0: Video: mpeg4 (XVID / 0x44495658), yuv420p, 712x368 [SAR 1:1 DAR
 89:46], 25 fps, 25 tbr, 25 tbn, 2 tbc
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf54.59.106
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 712x368 [SAR 1:1 DAR
 89:46], q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg4 -> mpeg4)
Press [q] to stop, [?] for help
[mpeg4 @ 0x1eff580] looks like this file was encoded with (divx4/(old)xvid/opend
ivx) -> forcing low_delay flag
frame=   39 fps=0.0 q=28.6 size=     123kB time=00:00:01.56 bitrate= 646.0kbits/
frame=   85 fps=0.0 q=19.2 size=     182kB time=00:00:03.40 bitrate= 439.5kbits/
frame=  117 fps= 86 q=21.6 Lsize=     229kB time=00:00:04.68 bitrate= 400.4kbits
/s
video:220kB audio:0kB subtitle:0 global headers:0kB muxing overhead 3.821809%
}}}"	defect	open	normal	avcodec	git-master		asp				1	0