Pier Angelo Vendrame pushed to branch mullvad-browser-140.2.0esr-15.0-1 at The 
Tor Project / Applications / Mullvad Browser


Commits:
c735c7ed by Pier Angelo Vendrame at 2025-09-08T15:51:22+02:00
fixup! Firefox preference overrides.

BB 43950: Disable HEVC.

HEVC support can be used for fingerprinting, as it's hardware-dependent
on some systems, or depends on distribution support/installed packages
for Linux.

- - - - -


1 changed file:

- browser/app/profile/001-base-profile.js


Changes:

=====================================
browser/app/profile/001-base-profile.js
=====================================
@@ -483,6 +483,9 @@ pref("gfx.offscreencanvas.enabled", false);
 pref("dom.disable_window_move_resize", true);
 // Set video VP9 to 0 for everyone (bug 22548)
 pref("media.benchmark.vp9.threshold", 0);
+// tor-browser#43950: Disable HEVC, as it will reveal lacking hardware support,
+// or differences in installed codec for Linux systems.
+pref("media.hevc.enabled", false);
 pref("privacy.resistFingerprinting.block_mozAddonManager", true); // Bug 26114
 pref("dom.webmidi.enabled", false); // Bug 41398: Disable Web MIDI API
 // tor-browser#42043: Stop reporting device IDs (and spoof their number without



View it on GitLab: 
https://gitlab.torproject.org/tpo/applications/mullvad-browser/-/commit/c735c7ed79e0703f4dc373528a54bc9450e1585b

-- 
View it on GitLab: 
https://gitlab.torproject.org/tpo/applications/mullvad-browser/-/commit/c735c7ed79e0703f4dc373528a54bc9450e1585b
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