shithub: libvpx

Download patch

ref: e188b5435de71bcd602c378f1ac0441111f0f915
parent: bc066684ca4deff24d02ee56071d731b431bf438
author: Marco Paniconi <marpan@google.com>
date: Thu Oct 11 06:24:16 EDT 2018

Revert "vp8: Increase rate threshold for overshoot-drop"

This reverts commit bc066684ca4deff24d02ee56071d731b431bf438.

Reason for revert: <INSERT REASONING HERE>
Regression in webrtc perf test

Original change's description:
> vp8: Increase rate threshold for overshoot-drop
> 
> Increase the rate threshold for the dropping when
> overshoot is detected during encoding. This helps
> to prevent some unneccessary drops for hard content.
> 
> Change-Id: I258bf33883d46347efd44e1e192cb25c444d05fe

TBR=sprang@chromium.org,marpan@google.com,builds@webmproject.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Ib0e84747430ba6d04e479f9efd86d628b80a1e67

--- a/vp8/encoder/ratectrl.c
+++ b/vp8/encoder/ratectrl.c
@@ -1474,7 +1474,7 @@
     // QP threshold: only allow dropping if we are not close to qp_max.
     int thresh_qp = 3 * cpi->worst_quality >> 2;
     // Rate threshold, in bytes.
-    int thresh_rate = 3 * (cpi->av_per_frame_bandwidth >> 3);
+    int thresh_rate = 2 * (cpi->av_per_frame_bandwidth >> 3);
     // Threshold for the average (over all macroblocks) of the pixel-sum
     // residual error over 16x16 block.
     int thresh_pred_err_mb = (200 << 4);