id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1601	msmpeg4 reencode MB as intra or picture with higher quantizer if syntax limits are hit	ami_stuff		"there is visible a blinking square in the output video at the bottom-right corner

does not happen with removed ""-b:v 1000k"" from the command line

http://www.datafilehost.com/download-d92d34d7.html

{{{
C:\>ffmpeg -i mpeg1.mpg -r 25 -s 312x310 -vcodec msmpeg4v2 -an -b:v 1000k out.wmv
ffmpeg version N-43160-g752344d Copyright (c) 2000-2012 the FFmpeg developers
  built on Aug  3 2012 02:38:06 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      51. 66.100 / 51. 66.100
  libavcodec     54. 48.100 / 54. 48.100
  libavformat    54. 22.100 / 54. 22.100
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  5.101 /  3.  5.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[mpeg @ 0x1eacee0] max_analyze_duration 5000000 reached at 5005000
Input #0, mpeg, from 'mpeg1.mpg':
  Duration: 00:00:12.61, start: 0.825933, bitrate: 1317 kb/s
    Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 320x240 [SAR 178:163 DAR 712
:489], 1150 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16, 128 kb/s
Output #0, asf, to 'out.wmv':
  Metadata:
    WM/EncodingSettings: Lavf54.22.100
    Stream #0:0: Video: msmpeg4v2 (MP42 / 0x3234504D), yuv420p, 312x310 [SAR 275
90:19071 DAR 712:489], q=2-31, 1000 kb/s, 1k tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg1video -> msmpeg4v2)
Press [q] to stop, [?] for help
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 17 times
frame=   46 fps=0.0 q=2.0 size=     257kB time=00:00:01.84 bitrate=1143.2kbits/s
warning, clipping 1 dct coefficients to -127..127
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 38 times
frame=  103 fps=0.0 q=2.4 size=     588kB time=00:00:04.12 bitrate=1169.2kbits/s
warning, clipping 1 dct coefficients to -127..127
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 12 times
frame=  158 fps=105 q=2.5 size=     872kB time=00:00:06.32 bitrate=1130.8kbits/s
warning, clipping 1 dct coefficients to -127..127
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 8 times
frame=  212 fps=106 q=2.5 size=    1129kB time=00:00:08.48 bitrate=1090.3kbits/s
warning, clipping 1 dct coefficients to -127..127
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 28 times
frame=  259 fps=104 q=2.0 size=    1326kB time=00:00:10.36 bitrate=1048.1kbits/s
warning, clipping 1 dct coefficients to -127..127
[msmpeg4v2 @ 0x1fa2c40] warning, clipping 1 dct coefficients to -127..127
    Last message repeated 26 times
[mpeg1video @ 0x1ead840] ac-tex damaged at 19 14
[mpeg1video @ 0x1ead840] Warning MVs not available
[mpeg1video @ 0x1ead840] concealing 20 DC, 20 AC, 20 MV errors in B frame
frame=  318 fps=105 q=2.0 Lsize=    1501kB time=00:00:12.72 bitrate= 966.5kbits/
s dup=0 drop=61
video:1479kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.442929%
}}}"	enhancement	open	normal	avcodec	git-master		msmpeg4 qscale				1	1
