shithub: libvpx

Download patch

ref: 4640c2f58346160a1aedafc323b3d1f322f71e5d
parent: 49785d3d0298ffc77915315bf1d37b26936128d1
author: Marco Paniconi <marpan@google.com>
date: Wed Jun 6 11:16:14 EDT 2018

vp9-svc: Enable use of second temporal reference for SVC.

When inter-layer is disabled on INTER frames, this will allow
use of a second (longer term) temporal reference for SVC.

Only enabled on highest resolution spatial layer.

Average gains of ~4% on RTC set, speed decrease of about ~2%.

Change-Id: I3c2d415653c448eb7269c828e120fe8bb2ef3f97

--- a/vp9/encoder/vp9_svc_layercontext.c

+++ b/vp9/encoder/vp9_svc_layercontext.c

@@ -33,7 +33,7 @@

   svc->force_zero_mode_spatial_ref = 0;

   svc->use_base_mv = 0;

   svc->use_partition_reuse = 0;

-  svc->use_longterm_ref = 0;

+  svc->use_longterm_ref = 1;

   svc->use_longterm_ref_current_layer = 0;

   svc->scaled_temp_is_alloc = 0;

   svc->scaled_one_half = 0;