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authorRonald S. Bultje <rsbultje@gmail.com>2013-01-15 08:38:54 -0800
committerMichael Niedermayer <michaelni@gmx.at>2013-01-16 01:22:30 +0100
commit2c85d7c015489e169759e52c21499579dae5c2b1 (patch)
tree8a7d70354389e303672c344a483725bf7a99e442 /ffmpeg_opt.c
parente7a39e163ddbde85f966132194143d0338445a0c (diff)
downloadffmpeg-2c85d7c015489e169759e52c21499579dae5c2b1.tar.gz
h264: add 3 pixels below for subpixel filter wait position.
If the motion vector is at a subpixel position, we need 3 pixels below the motion vector's wholepel position available, not 2, since the MC filter is a sixtap filter for the hpel position, and then a bilin filter for the qpel position. This patch fixes highly irreproducible (0.1%) fate failures in frame 2 and 4 of h264-conformance-cama2_vtc_b (e.g. first P-frame, first field, last line of MB x=40,y=2 and second field and last lines of MBs x=39-40, y=3). These used pre-loopfilter instead of post-loopfilter data because the await_progress() waited for one line too little in that field, and the motion vector of these particular MBs happened to align exactly to a position where that demonstrates the bug. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'ffmpeg_opt.c')
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