vf vflip: horizontal line at the bottom when input have odd height (-pix_fmt yuv420p)

[ami_stuff]

also reproducible with -vcodec ffv1/rawvideo/snow or -pix_fmt yuv410p

C:\>ffmpeg -i 600.png -pix_fmt yuv420p -vf vflip out.tif
ffmpeg version N-40756-g703e920 Copyright (c) 2000-2012 the FFmpeg developers
  built on May 17 2012 02:26:05 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. 53.100 / 51. 53.100
  libavcodec     54. 21.101 / 54. 21.101
  libavformat    54.  5.100 / 54.  5.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 74.100 /  2. 74.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, image2, from '600.png':
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgb24, 600x413, 25 tbr, 25 tbn, 25 tbc
[buffer @ 0x1de1320] w:600 h:413 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:fla
gs=2
[buffersink @ 0x1de1660] No opaque field provided
[vflip @ 0x1de2520] auto-inserting filter 'auto-inserted scaler 0' between the f
ilter 'src' and the filter 'Parsed_vflip_0'
[scale @ 0x1de2d80] w:600 h:413 fmt:rgb24 sar:0/1 -> w:600 h:413 fmt:yuv420p sar
:0/1 flags:0x4
Output #0, image2, to 'out.tif':
  Metadata:
    encoder         : Lavf54.5.100
    Stream #0:0: Video: tiff, yuv420p, 600x413, q=2-31, 200 kb/s, 90k tbn, 25 tb
c
Stream mapping:
  Stream #0:0 -> #0:0 (png -> tiff)
Press [q] to stop, [?] for help
frame=    1 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=   0.0kbits/
s
video:304kB audio:0kB global headers:0kB muxing overhead -100.000000%

[Carl Eugen Hoyos]

This appears to have been fixed.