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| author | Jingning Han <jingning@google.com> | 2014-05-12 10:55:14 -0700 |
|---|---|---|
| committer | Jingning Han <jingning@google.com> | 2014-05-13 12:27:42 -0700 |
| commit | 3f96081a15093604f9eca116c9e7a9493db37253 (patch) | |
| tree | 72d0afca85e42b8ae10e8f04dd67851101bd93d7 /vp9 | |
| parent | 77c754df795838395a82d8660b1ad01ce84e15b3 (diff) | |
| download | libvpx-3f96081a15093604f9eca116c9e7a9493db37253.tar libvpx-3f96081a15093604f9eca116c9e7a9493db37253.tar.gz libvpx-3f96081a15093604f9eca116c9e7a9493db37253.tar.bz2 libvpx-3f96081a15093604f9eca116c9e7a9493db37253.zip | |
Tune minq index table for P frames in one_pass_cbr coding mode
Allow slightly larger minq-maxq range for P frames. This improves
the compression performance of speed -5 for rtc set by 2.7% in psnr.
Change-Id: I438653d52d0fe51111509c6092e2334bac2de0cf
Diffstat (limited to 'vp9')
| -rw-r--r-- | vp9/encoder/vp9_ratectrl.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c index 0f4c4da13..124e926ec 100644 --- a/vp9/encoder/vp9_ratectrl.c +++ b/vp9/encoder/vp9_ratectrl.c @@ -48,6 +48,7 @@ static int kf_high_motion_minq[QINDEX_RANGE]; static int arfgf_low_motion_minq[QINDEX_RANGE]; static int arfgf_high_motion_minq[QINDEX_RANGE]; static int inter_minq[QINDEX_RANGE]; +static int rtc_minq[QINDEX_RANGE]; static int gf_high = 2000; static int gf_low = 400; static int kf_high = 5000; @@ -84,6 +85,7 @@ void vp9_rc_init_minq_luts() { arfgf_low_motion_minq[i] = get_minq_index(maxq, 0.0000015, -0.0009, 0.30); arfgf_high_motion_minq[i] = get_minq_index(maxq, 0.0000021, -0.00125, 0.50); inter_minq[i] = get_minq_index(maxq, 0.00000271, -0.00113, 0.90); + rtc_minq[i] = get_minq_index(maxq, 0.00000271, -0.00113, 0.70); } } @@ -549,14 +551,14 @@ static int rc_pick_q_and_bounds_one_pass_cbr(const VP9_COMP *cpi, // Use the lower of active_worst_quality and recent/average Q. if (cm->current_video_frame > 1) { if (rc->avg_frame_qindex[INTER_FRAME] < active_worst_quality) - active_best_quality = inter_minq[rc->avg_frame_qindex[INTER_FRAME]]; + active_best_quality = rtc_minq[rc->avg_frame_qindex[INTER_FRAME]]; else - active_best_quality = inter_minq[active_worst_quality]; + active_best_quality = rtc_minq[active_worst_quality]; } else { if (rc->avg_frame_qindex[KEY_FRAME] < active_worst_quality) - active_best_quality = inter_minq[rc->avg_frame_qindex[KEY_FRAME]]; + active_best_quality = rtc_minq[rc->avg_frame_qindex[KEY_FRAME]]; else - active_best_quality = inter_minq[active_worst_quality]; + active_best_quality = rtc_minq[active_worst_quality]; } } |