Commit d90b21dc authored by Fernando Fernandez Mancera's avatar Fernando Fernandez Mancera Committed by Alex Catarineu
Browse files

Bug 22548: Firefox downgrades VP9 videos to VP8. 

On systems where H.264 is not available or no HWA, VP9 is preferred. But in Tor
Browser 7.0 all youtube videos are degraded to VP8.

This behaviour can be turned off by setting media.benchmark.vp9.threshold to 0.
All clients will get better experience and lower traffic, beause TBB doesn't
use "Use hardware acceleration when available".
parent 87fee0c8

browser/app/profile/000-tor-browser.js

+2 −0
Original line number Original line Diff line number Diff line
@@ -134,6 +134,8 @@ pref("browser.link.open_newwindow.restriction", 0); // Bug 9881: Open popups in 
pref("dom.gamepad.enabled", false); // bugs.torproject.org/13023

pref("dom.gamepad.enabled", false); // bugs.torproject.org/13023

// Disable video statistics fingerprinting vector (bug 15757)

// Disable video statistics fingerprinting vector (bug 15757)

pref("media.video_stats.enabled", false);

pref("media.video_stats.enabled", false);

// Set video VP9 to 0 for everyone (bug 22548)

pref("media.benchmark.vp9.threshold", 0);

// Disable device sensors as possible fingerprinting vector (bug 15758)

// Disable device sensors as possible fingerprinting vector (bug 15758)

pref("device.sensors.enabled", false);

pref("device.sensors.enabled", false);

pref("dom.enable_resource_timing", false); // Bug 13024: To hell with this API

pref("dom.enable_resource_timing", false); // Bug 13024: To hell with this API

modules/libpref/init/StaticPrefList.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -2101,7 +2101,7 @@ VARCACHE_PREF( 
VARCACHE_PREF(

VARCACHE_PREF(

  "media.benchmark.vp9.threshold",

  "media.benchmark.vp9.threshold",

   MediaBenchmarkVp9Threshold,

   MediaBenchmarkVp9Threshold,

  RelaxedAtomicUint32, 150

  RelaxedAtomicUint32, 0

)

)





VARCACHE_PREF(

VARCACHE_PREF(