--- a/mobile/android/app/mobile.js
+++ b/mobile/android/app/mobile.js
@@ -931,8 +931,12 @@ pref("media.openUnsupportedTypeWithExter
 pref("dom.keyboardevent.dispatch_during_composition", true);
 
 #if CPU_ARCH == aarch64
 pref("javascript.options.native_regexp", false);
 #endif
 
 // Ask for permission when enumerating WebRTC devices.
 pref("media.navigator.permission.device", true);
+
+#ifdef NIGHTLY_BUILD
+pref("media.videocontrols.lock-video-orientation", true);
+#endif