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author | Ronald S. Bultje <rsbultje@gmail.com> | 2013-01-15 08:38:54 -0800 |
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committer | Luca Barbato <lu_zero@gentoo.org> | 2013-01-15 22:00:34 +0100 |
commit | fb845ffdd335a1efd6dfd43e8adeb530397b348e (patch) | |
tree | 9bb6f6ce35c9938a785001e941ca63aa22d53566 /libavformat/lmlm4.c | |
parent | f924d52975ec5bbae41d26f79be2373a1b12046b (diff) | |
download | ffmpeg-fb845ffdd335a1efd6dfd43e8adeb530397b348e.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.
CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Diffstat (limited to 'libavformat/lmlm4.c')
0 files changed, 0 insertions, 0 deletions