From 5affbf232716e9e0642f712347020760d8b03ba4 Mon Sep 17 00:00:00 2001
From: philipel <philipel@webrtc.org>
Date: Thu, 24 Jan 2019 15:49:40 +0100
Subject: [PATCH] Turn off automatic quality scaling for simulcast in
 video_loopback.

The LibvpxVp8Encoder does not allow automatic quality scaling to be used when
encoding multiple resolutions (for simulcast).

Bug: None
Change-Id: Ic47d53850d03f399f80b6cf292fc607c19c1581d
Reviewed-on: https://webrtc-review.googlesource.com/c/119702
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26393}
---
 video/video_loopback.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/video/video_loopback.cc b/video/video_loopback.cc
index cc1cbd41c9..f3c8a870be 100644
--- a/video/video_loopback.cc
+++ b/video/video_loopback.cc
@@ -341,7 +341,7 @@ void Loopback() {
                      0,  // No min transmit bitrate.
                      flags::FLAG_use_ulpfec,
                      flags::FLAG_use_flexfec,
-                     true,  // Automatic quality scaling.
+                     flags::NumStreams() < 2,  // Automatic quality scaling.
                      flags::Clip(),
                      flags::GetCaptureDevice()};
   params.audio = {flags::FLAG_audio, flags::FLAG_audio_video_sync,