commit ec6eded41c203e45fc9bf156f72b88f620e5fa1b
author kyslov <kyslov@google.com> Wed Feb 20 14:30:51 2019 -0800
committer kyslov <kyslov@google.com> Wed Feb 20 14:41:48 2019 -0800
tree 48b1574eeca706dad13846fce1aa18a281ed32cb
parent f95c91602deae2838b36657d67f5a6a9325d7f26

Set Loop Filter level to be picked from Quality on speed 8

Switching off loop filter completely has severe negative effect on
visual quality especially on low bitrates. Instead of switching it off,
use quality-based level setup. This decreases encoding speed to about
2-3% on speed 8, but improves visual quality

Change-Id: Ie414f4e00dbb7b5b1d61f8d10ea954241a7383d4

av1/encoder/speed_features.c

diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index 08cb9e6..1df0d6b 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -409,7 +409,7 @@
   if (speed >= 8) {
     sf->mv.search_method = FAST_DIAMOND;
     sf->mv.subpel_force_stop = HALF_PEL;
-    sf->lpf_pick = LPF_PICK_MINIMAL_LPF;
+    sf->lpf_pick = LPF_PICK_FROM_Q;
   }
 }
 
@@ -610,7 +610,7 @@
   }
   if (speed >= 8) {
     sf->mv.search_method = FAST_DIAMOND;
-    sf->lpf_pick = LPF_PICK_MINIMAL_LPF;
+    sf->lpf_pick = LPF_PICK_FROM_Q;
     sf->default_max_partition_size = BLOCK_128X128;
     sf->default_min_partition_size = BLOCK_8X8;
     sf->partition_search_type = VAR_BASED_PARTITION;