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Some rate control adjustments to control overshoot

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Some rate control adjustments to control overshoot
in the constrained quality mode.

Change-Id: I8907b9a883642d779009d0a138adfa6ba67e7f41
This commit is contained in:
Deb Mukherjee
2015-03-10 17:25:10 -07:00
parent 340260585c
commit 0308e2ee6d
1 changed files with 2 additions and 2 deletions
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4
vp9/encoder/vp9_ratectrl.c
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@@ -754,7 +754,7 @@ static int rc_pick_q_and_bounds_one_pass_cbr(const VP9_COMP *cpi,
static int get_active_cq_level(const RATE_CONTROL *rc, static int get_active_cq_level(const RATE_CONTROL *rc,
const VP9EncoderConfig *const oxcf) { const VP9EncoderConfig *const oxcf) {
static const double cq_adjust_threshold = 0.5; static const double cq_adjust_threshold = 0.1;
int active_cq_level = oxcf->cq_level; int active_cq_level = oxcf->cq_level;
if (oxcf->rc_mode == VPX_CQ && if (oxcf->rc_mode == VPX_CQ &&
rc->total_target_bits > 0) { rc->total_target_bits > 0) {
@@ -1687,7 +1687,7 @@ void vp9_set_target_rate(VP9_COMP *cpi) {
int target_rate = rc->base_frame_target; int target_rate = rc->base_frame_target;
// Correction to rate target based on prior over or under shoot. // Correction to rate target based on prior over or under shoot.
if (cpi->oxcf.rc_mode == VPX_VBR) if (cpi->oxcf.rc_mode == VPX_VBR || cpi->oxcf.rc_mode == VPX_CQ)
vbr_rate_correction(cpi, &target_rate, rc->vbr_bits_off_target); vbr_rate_correction(cpi, &target_rate, rc->vbr_bits_off_target);
vp9_rc_set_frame_target(cpi, target_rate); vp9_rc_set_frame_target(cpi, target_rate);
} }