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);