diff options
Diffstat (limited to 'vp9/encoder/vp9_ratectrl.c')
| -rw-r--r-- | vp9/encoder/vp9_ratectrl.c | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c index 4a7ccc4e5..2e4c9d2bf 100644 --- a/vp9/encoder/vp9_ratectrl.c +++ b/vp9/encoder/vp9_ratectrl.c @@ -31,10 +31,13 @@ #include "vp9/encoder/vp9_encodemv.h" #include "vp9/encoder/vp9_ratectrl.h" -// Max rate target for 1080P and below encodes under normal circumstances -// (1920 * 1080 / (16 * 16)) * MAX_MB_RATE bits per MB +// Max rate per frame for 1080P and below encodes if no level requirement given. +// For larger formats limit to MAX_MB_RATE bits per MB +// 4Mbits is derived from the level requirement for level 4 (1080P 30) which +// requires that HW can sustain a rate of 16Mbits over a 4 frame group. +// If a lower level requirement is specified then this may over ride this value. #define MAX_MB_RATE 250 -#define MAXRATE_1080P 2025000 +#define MAXRATE_1080P 4000000 #define DEFAULT_KF_BOOST 2000 #define DEFAULT_GF_BOOST 2000 @@ -1100,6 +1103,9 @@ static int rc_pick_q_and_bounds_two_pass(const VP9_COMP *cpi, int *bottom_index, // Baseline value derived from cpi->active_worst_quality and kf boost. active_best_quality = get_kf_active_quality(rc, active_worst_quality, cm->bit_depth); + if (cpi->twopass.kf_zeromotion_pct >= STATIC_KF_GROUP_THRESH) { + active_best_quality /= 4; + } // Allow somewhat lower kf minq with small image formats. if ((cm->width * cm->height) <= (352 * 288)) { @@ -1490,6 +1496,9 @@ void vp9_rc_postencode_update(VP9_COMP *cpi, uint64_t bytes_used) { if (cm->frame_type != KEY_FRAME) rc->reset_high_source_sad = 0; rc->last_avg_frame_bandwidth = rc->avg_frame_bandwidth; + if (cpi->use_svc && + cpi->svc.spatial_layer_id < cpi->svc.number_spatial_layers - 1) + cpi->svc.lower_layer_qindex = cm->base_qindex; } void vp9_rc_postencode_update_drop_frame(VP9_COMP *cpi) { @@ -1584,9 +1593,8 @@ void vp9_rc_get_one_pass_vbr_params(VP9_COMP *cpi) { // Adjust boost and af_ratio based on avg_frame_low_motion, which varies // between 0 and 100 (stationary, 100% zero/small motion). rc->gfu_boost = - VPXMAX(500, - DEFAULT_GF_BOOST * (rc->avg_frame_low_motion << 1) / - (rc->avg_frame_low_motion + 100)); + VPXMAX(500, DEFAULT_GF_BOOST * (rc->avg_frame_low_motion << 1) / + (rc->avg_frame_low_motion + 100)); rc->af_ratio_onepass_vbr = VPXMIN(15, VPXMAX(5, 3 * rc->gfu_boost / 400)); } adjust_gfint_frame_constraint(cpi, rc->frames_to_key); @@ -1861,13 +1869,8 @@ void vp9_rc_set_gf_interval_range(const VP9_COMP *const cpi, rc->max_gf_interval = vp9_rc_get_default_max_gf_interval( cpi->framerate, rc->min_gf_interval); - // Extended interval for genuinely static scenes - rc->static_scene_max_gf_interval = MAX_LAG_BUFFERS * 2; - - if (is_altref_enabled(cpi)) { - if (rc->static_scene_max_gf_interval > oxcf->lag_in_frames - 1) - rc->static_scene_max_gf_interval = oxcf->lag_in_frames - 1; - } + // Extended max interval for genuinely static scenes like slide shows. + rc->static_scene_max_gf_interval = MAX_STATIC_GF_GROUP_LENGTH; if (rc->max_gf_interval > rc->static_scene_max_gf_interval) rc->max_gf_interval = rc->static_scene_max_gf_interval; @@ -1911,12 +1914,12 @@ void vp9_rc_update_framerate(VP9_COMP *cpi) { VPXMAX(rc->min_frame_bandwidth, FRAME_OVERHEAD_BITS); // A maximum bitrate for a frame is defined. - // The baseline for this aligns with HW implementations that - // can support decode of 1080P content up to a bitrate of MAX_MB_RATE bits - // per 16x16 MB (averaged over a frame). However this limit is extended if - // a very high rate is given on the command line or the the rate cannnot - // be acheived because of a user specificed max q (e.g. when the user - // specifies lossless encode. + // However this limit is extended if a very high rate is given on the command + // line or the the rate cannnot be acheived because of a user specificed max q + // (e.g. when the user specifies lossless encode). + // + // If a level is specified that requires a lower maximum rate then the level + // value take precedence. vbr_max_bits = (int)(((int64_t)rc->avg_frame_bandwidth * oxcf->two_pass_vbrmax_section) / 100); |