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| author | Marco <marpan@google.com> | 2017-09-29 11:34:00 -0700 |
|---|---|---|
| committer | Marco <marpan@google.com> | 2017-10-03 16:27:17 -0700 |
| commit | ab2bd340ace0e02285a821207e4080cbf0bbdce8 (patch) | |
| tree | d0d9bf981f4d6802b2441dc9ddd25521dcaba223 /vp9/encoder/vp9_ratectrl.c | |
| parent | 66b6b87471620a9eba2e7fb5e687b8f0e630be66 (diff) | |
| download | libvpx-ab2bd340ace0e02285a821207e4080cbf0bbdce8.tar libvpx-ab2bd340ace0e02285a821207e4080cbf0bbdce8.tar.gz libvpx-ab2bd340ace0e02285a821207e4080cbf0bbdce8.tar.bz2 libvpx-ab2bd340ace0e02285a821207e4080cbf0bbdce8.zip | |
vp9: 1 pass vbr: Limit qpdelta on high_source_sad.
For 1 pass vbr: when significant content/scene change is detected
(high_source_sad = 1) reduce/turnoff the additional qdelta on the
active_worst_quality. This helps somewhat to reduce the occurrence
of large frame sizes and large encode times.
Allow it only when use_altef_onepass is enabled.
Neutral/no change on metrics.
Change-Id: I1dd97dd2ab892d65f707b841b27a5de300b714ea
Diffstat (limited to 'vp9/encoder/vp9_ratectrl.c')
| -rw-r--r-- | vp9/encoder/vp9_ratectrl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/vp9/encoder/vp9_ratectrl.c b/vp9/encoder/vp9_ratectrl.c index 716eb1bc8..e796b66e0 100644 --- a/vp9/encoder/vp9_ratectrl.c +++ b/vp9/encoder/vp9_ratectrl.c @@ -1004,6 +1004,7 @@ static int rc_pick_q_and_bounds_one_pass_vbr(const VP9_COMP *cpi, qdelta = vp9_compute_qdelta_by_rate( &cpi->rc, cm->frame_type, active_worst_quality, 1.75, cm->bit_depth); } + if (rc->high_source_sad && cpi->sf.use_altref_onepass) qdelta = 0; *top_index = active_worst_quality + qdelta; *top_index = (*top_index > *bottom_index) ? *top_index : *bottom_index; } |