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| author | Peter Cordes <peter@cordes.ca> | 2015-03-04 03:35:36 -0400 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-05-31 13:58:55 +0200 |
| commit | 3ad3529b567e04a812c0ff103855ecba3efff900 (patch) | |
| tree | e87a5848d80cc268c9485e181d4a4caefcf6ec5f | |
| parent | 6590acf0fd0b78667487b2a1c09ca03e7868ac9f (diff) | |
| download | ffmpeg-3ad3529b567e04a812c0ff103855ecba3efff900.tar.gz | |
avfilter/vf_mpdecimate: add comment about 8x8 SAD
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavfilter/vf_mpdecimate.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavfilter/vf_mpdecimate.c b/libavfilter/vf_mpdecimate.c index cb3e69fd92..7cc32547ff 100644 --- a/libavfilter/vf_mpdecimate.c +++ b/libavfilter/vf_mpdecimate.c @@ -120,6 +120,11 @@ static int decimate_frame(AVFilterContext *ctx, return 0; for (plane = 0; ref->data[plane] && ref->linesize[plane]; plane++) { + /* use 8x8 SAD even on subsampled planes. The blocks won't match up with + * luma blocks, but hopefully nobody is depending on this to catch + * localized chroma changes that wouldn't exceed the thresholds when + * diluted by using what's effectively a larger block size. + */ int vsub = plane == 1 || plane == 2 ? decimate->vsub : 0; int hsub = plane == 1 || plane == 2 ? decimate->hsub : 0; if (diff_planes(ctx, |