shithub: libvpx

Download patch

ref: e802f3a87dc5f12ce087324e221dd46dd8f4f22d
parent: 3f3d0adec18239f2b818cb6bafac407f2d6af66e
parent: 89d23138d2a67a3e518d1026f87cdd5a9e1bee78
author: Marco Paniconi <marpan@google.com>
date: Fri Aug 3 13:28:57 EDT 2018

Merge "vp9: Adjust qp_thresh on slide change overshoot detection"

--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -2820,7 +2820,7 @@
   // If this decision is not based on an encoded frame size but just on
   // scene/slide change detection (i.e., re_encode_overshoot_rt = 0), adjust the
   // qp_thresh and skip the (frame_size > thresh_rate) condition in this case.
-  if (!sf->re_encode_overshoot_rt) thresh_qp = rc->worst_quality >> 1;
+  if (!sf->re_encode_overshoot_rt) thresh_qp = 3 * (rc->worst_quality >> 2);
   if ((!sf->re_encode_overshoot_rt || frame_size > thresh_rate) &&
       cm->base_qindex < thresh_qp) {
     double rate_correction_factor =