utvideo: RGB (ULRG) + predict median + assum intercaled video = broken output

[ami_stuff]

decodes correctly with original codec

predict median + assume interlaced video = broken output:

​http://www.datafilehost.com/download-e5c58efd.html

predict left + assume interlaced video = ok:

​http://www.datafilehost.com/download-6a72999e.html

C:\>ffmpeg -i predict_median.avi out.avi
ffmpeg version N-39824-g7432bcf Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 15 2012 02:20:32 with gcc 4.5.0 20100414 (Fedora MinGW 4.5.0-1.fc
14)
  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' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snapshots/buil
d/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/snapshots/b
uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3 --enable-n
onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-libvorbis
--enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-libopencor
e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
  libavutil      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 70.100 /  2. 70.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, avi, from 'predict_median.avi':
  Duration: 00:00:02.00, start: 0.000000, bitrate: 23246 kb/s
    Stream #0:0: Video: utvideo (ULRG / 0x47524C55), rgb24, 320x240, 25 tbr, 25
tbn, 25 tbc
Incompatible pixel format 'rgb24' for codec 'mpeg4', auto-selecting format 'yuv4
20p'
[buffer @ 0x1dc1d60] w:320 h:240 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:fla
gs=2
[buffersink @ 0x1dc1180] auto-inserting filter 'auto-inserted scale 0' between t
he filter 'src' and the filter 'out'
[scale @ 0x1dc1b80] w:320 h:240 fmt:rgb24 sar:0/1 -> w:320 h:240 fmt:yuv420p sar
:0/1 flags:0x4
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf54.3.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200
 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (utvideo -> mpeg4)
Press [q] to stop, [?] for help
frame=   31 fps=0.0 q=2.0 size=     154kB time=00:00:01.24 bitrate=1016.2kbits/s
frame=   50 fps=0.0 q=2.0 Lsize=     257kB time=00:00:02.00 bitrate=1051.6kbits/
s
video:250kB audio:0kB global headers:0kB muxing overhead 2.707011%

[Carl Eugen Hoyos]

Should be fixed.