[FFmpeg-trac] #1601(undetermined:new): msmpeg4v2 enc: blinking square at the bottom-right corner of the video

FFmpeg trac at avcodec.org
Fri Aug 3 18:23:17 CEST 2012


#1601: msmpeg4v2 enc: blinking square at the bottom-right corner of the video
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 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%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1601>
FFmpeg <http://ffmpeg.org>
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