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aq-mode=3: Reduce boost for segment#2 at low bitrates/low res.

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Reduce boost for segment#2 for low bitrates and low-res.

This change is to reduce the rate overshoot at low bitrates.
No change in behavior, except at the very low bitrates.

Change-Id: I0dbd9d3b6356da5804de94adf10fca6a7a8f8948
This commit is contained in:
Marco 2015-06-22 17:50:01 -07:00
parent 7555e2b822
commit 517a662005
1 changed files with 3 additions and 2 deletions
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5
vp9/encoder/vp9_aq_cyclicrefresh.c
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@ -129,7 +129,8 @@ static int candidate_refresh_aq(const CYCLIC_REFRESH *cr,
else if (bsize >= BLOCK_16X16 &&
rate < cr->thresh_rate_sb &&
is_inter_block(mbmi) &&
mbmi->mv[0].as_int == 0)
mbmi->mv[0].as_int == 0 &&
cr->rate_boost_fac > 1.0)
// More aggressive delta-q for bigger blocks with zero motion.
return CR_SEGMENT_ID_BOOST2;
else
@ -464,7 +465,7 @@ void vp9_cyclic_refresh_update_parameters(VP9_COMP *const cpi) {
cm->height <= 288 &&
rc->avg_frame_bandwidth < 3400) {
cr->motion_thresh = 4;
cr->rate_boost_fac = 1.25;
cr->rate_boost_fac = 1.0;
} else {
cr->motion_thresh = 32;
cr->rate_boost_fac = 1.7;