From b126e474a06079bf0dfa7492778b2deccb6c9e11 Mon Sep 17 00:00:00 2001
From: Vincent Bernat <vincent@bernat.ch>
Date: Mon, 21 Jun 2021 19:25:30 +0200
Subject: [PATCH] firefox: enable video acceleration through VAAPI

This is not done for VP9 yet because it seems more experimental and
may break WebRTC. See
https://wiki.archlinux.org/title/Firefox#Hardware_video_acceleration.
---
 firefox.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/firefox.js b/firefox.js
index 28ad8c5..58db261 100644
--- a/firefox.js
+++ b/firefox.js
@@ -56,6 +56,10 @@ user_pref("toolkit.cosmeticAnimations.enabled", false);
 
 // Force enable WebRender
 user_pref("gfx.webrender.all", true);
+// And VAAPI decoding with ffmpeg
+user_pref("gfx.x11-egl.force-enabled", true);
+user_pref("gfx.x11-egl.force-disabled", true);
+user_pref("media.ffmpeg.vaapi.enabled", true);
 
 // Enable AVIF
 user_pref("image.avif.enabled", true);