[FFmpeg-trac] #3230(undetermined:new): wvc1: artefacts with interlaced bottom field first

[FFmpeg]

#3230: wvc1: artefacts with interlaced bottom field first
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 see also ticket #2531 (top field first)

 {{{
 C:\>ffmpeg -i interlaced_bottom.wmv -an -vcodec msmpeg4v2 out.avi
 ffmpeg version N-59133-gffbcb1c Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 16 2013 02:29:41 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-pthreads --enable-memalign-hack --enable-runtime-
 cpudetect --
 enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -lw
 inmm -lpthread' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snapsh
 ots/build/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/sna
 pshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-
 version3 --
 enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora
 --enable-li
 bvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb
 --enable-li
 bopencore-amrwb --enable-libmp3lame --enable-libfreetype --enable-libvpx
 --disab
 le-decoder=libvpx
   libavutil      52. 58.100 / 52. 58.100
   libavcodec     55. 45.101 / 55. 45.101
   libavformat    55. 22.100 / 55. 22.100
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     3. 92.100 /  3. 92.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Guessed Channel Layout for  Input Stream #0.0 : stereo
 Input #0, asf, from 'interlaced_bottom.wmv':
   Metadata:
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     Buffer Average  : 1544
     VBR Peak        : 759440
     IsVBR           : 1
     DeviceConformanceTemplate: AP at L3
   Duration: 00:00:12.67, start: 0.026000, bitrate: 1034 kb/s
     Stream #0:0(pol): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz,
 stereo, fltp
 , 281 kb/s
     Stream #0:1(pol): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p,
 320x24
 0, 915 kb/s, 23.98 tbr, 1k tbn, 1k tbc
 Output #0, avi, to 'out.avi':
   Metadata:
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     Buffer Average  : 1544
     VBR Peak        : 759440
     IsVBR           : 1
     DeviceConformanceTemplate: AP at L3
     ISFT            : Lavf55.22.100
     Stream #0:0(pol): Video: msmpeg4v2 (MP42 / 0x3234504D), yuv420p,
 320x240, q=
 2-31, 200 kb/s, 23.98 tbn, 23.98 tbc
 Stream mapping:
   Stream #0:1 -> #0:0 (vc1 -> msmpeg4v2)
 Press [q] to stop, [?] for help
 [vc1 @ 0x225e480] Referenced frame missing.
 [msmpeg4v2 @ 0x222c380] warning, clipping 1 dct coefficients to -127..127
     Last message repeated 1 times
 frame=  303 fps=0.0 q=4.6 Lsize=     410kB time=00:00:12.63 bitrate=
 265.8kbits/
 s
 video:397kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 3.222951%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3230>
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