--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -476,16 +476,22 @@ pref("media.navigator.video.max_fr", 60)
 pref("media.navigator.video.h264.level", 31); // 0x42E01f - level 3.1
 pref("media.navigator.video.h264.max_br", 0);
 pref("media.navigator.video.h264.max_mbps", 0);
 pref("media.peerconnection.video.vp9_enabled", true);
 pref("media.peerconnection.video.vp9_preferred", false);
 pref("media.getusermedia.aec", 1);
 pref("media.getusermedia.browser.enabled", false);
 pref("media.getusermedia.channels", 0);
+#if defined(ANDROID)
+pref("media.getusermedia.camera.off_while_disabled.enabled", false);
+#else
+pref("media.getusermedia.camera.off_while_disabled.enabled", true);
+#endif
+pref("media.getusermedia.camera.off_while_disabled.delay_ms", 3000);
 // Desktop is typically VGA capture or more; and qm_select will not drop resolution
 // below 1/2 in each dimension (or so), so QVGA (320x200) is the lowest here usually.
 pref("media.peerconnection.video.min_bitrate", 0);
 pref("media.peerconnection.video.start_bitrate", 0);
 pref("media.peerconnection.video.max_bitrate", 0);
 pref("media.peerconnection.video.min_bitrate_estimate", 0);
 pref("media.peerconnection.video.denoising", false);
 pref("media.navigator.audio.fake_frequency", 1000);