[FFmpeg-trac] #2701(undetermined:new): mpeg2video: green artefacts at the bottom with lowres 3

[FFmpeg]

#2701: mpeg2video: green artefacts at the bottom with lowres 3
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 http://www.datafilehost.com/download-c8be0b6f.html

 {{{
 C:\>ffmpeg -vlowres 3 -i green_lowres.ts -an out.avi
 ffmpeg version N-54141-g1a405c6 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jun 22 2013 02:23:45 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. 37.101 / 52. 37.101
   libavcodec     55. 16.100 / 55. 16.100
   libavformat    55.  9.100 / 55.  9.100
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 77.101 /  3. 77.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [mpeg2video @ 0x20f3820] allocate dummy last picture for field based first
 keyfr
 ame
 [mpegts @ 0x1fff960] max_analyze_duration 5000000 reached at 5002500
 microsecond
 s
 Input #0, mpegts, from 'green_lowres.ts':
   Duration: 00:00:12.60, start: 0.097333, bitrate: 2357 kb/s
   Program 1
     Stream #0:0[0x12d]: Video: mpeg2video (4:2:2) ([2][0][0][0] / 0x0002),
 yuv42
 0p, 40x30 [SAR 1:1 DAR 4:3], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
     Stream #0:1[0x12e]: Audio: mp1 ([3][0][0][0] / 0x0003), 44100 Hz,
 stereo, s1
 6p, 448 kb/s
 [mpeg4 @ 0x2124c20] too many threads/slices (3), reducing to 2
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.9.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 40x30 [SAR 1:1
 DAR 4
 :3], q=2-31, 200 kb/s, 23.98 tbn, 23.98 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video -> mpeg4)
 Press [q] to stop, [?] for help
 [mpeg2video @ 0x20f3820] allocate dummy last picture for field based first
 keyfr
 ame
 frame=  302 fps=0.0 q=2.0 Lsize=      85kB time=00:00:12.63 bitrate=
 55.4kbits/
 s dup=0 drop=2
 video:73kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 17.704803%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2701>
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