commit 62698b879a82eb8e61ad894c65c6c4c09e434e5c
author Paul Wilkins <paulwilkins@google.com> Wed Aug 14 11:31:55 2019 +0100
committer Paul Wilkins <paulwilkins@google.com> Fri Aug 16 10:13:22 2019 +0000
tree e2d8f67ade6d1d71f7f9b9138f3e9f70c1af2e7a
parent 5fad3fb3fff3fe91a0f5e895370093958fed6c26

Change to minimum boost in calc_arf_boost

Change the minimum boost calculation for and ARF
based on the number of forward or backwards frames
that it acts as a reference for.

Small vbr metrics gains  (av psnr, ov psnr, ssim, psnr-hvs)

lowres  -0.184	-0.129	-0.658	-0.065
midres   0.111	-0.014	-0.316	 0.326
hdres   -0.229	-0.083	-0.772	-0.079

STATS_CHANGED

Change-Id: Ib8ebb9f5234810f2b70cb850affd7200935aacc7

av1/encoder/pass2_strategy.c

diff --git a/av1/encoder/pass2_strategy.c b/av1/encoder/pass2_strategy.c
index 5bb590d..f401b7d 100644
--- a/av1/encoder/pass2_strategy.c
+++ b/av1/encoder/pass2_strategy.c
@@ -499,8 +499,8 @@
   }
   arf_boost += (int)boost_score;
 
-  if (arf_boost < ((b_frames + f_frames) * 20))
-    arf_boost = ((b_frames + f_frames) * 20);
+  if (arf_boost < ((b_frames + f_frames) * 50))
+    arf_boost = ((b_frames + f_frames) * 50);
   arf_boost = AOMMAX(arf_boost, MIN_ARF_GF_BOOST);
 
   return arf_boost;