diff --git a/dom/media/tests/mochitest/mochitest.ini b/dom/media/tests/mochitest/mochitest.ini
index 371ede30a281..ec30dc1a59b2 100644
--- a/dom/media/tests/mochitest/mochitest.ini
+++ b/dom/media/tests/mochitest/mochitest.ini
@@ -1,7 +1,7 @@
 [DEFAULT]
 # strictContentSandbox - bug 1042735, Android 2.3 - bug 981881
 tags = msg webrtc
-skip-if = (os == 'win' && strictContentSandbox) || android_version == '10' || android_version == '18' || (buildapp == 'mulet') || (toolkit == 'gonk' && debug) # b2g(Either bug 1171118 or bug 1169838, take your pick)
+skip-if = (os == 'win' && strictContentSandbox) || android_version == '10' || (buildapp == 'mulet') || (toolkit == 'gonk' && debug) # b2g(Either bug 1171118 or bug 1169838, take your pick)
 support-files =
   head.js
   dataChannel.js
@@ -17,11 +17,11 @@ support-files =
 [test_dataChannel_basicAudio.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # Bug 962984 for debug, bug 963244 for opt
 [test_dataChannel_basicAudioVideo.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_dataChannel_basicAudioVideoNoBundle.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g) FAILS WHEN RUN MANUALLY ON AWS, android(Bug 1189784, timeouts on 4.3 emulator)
 [test_dataChannel_basicAudioVideoCombined.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_dataChannel_basicDataOnly.html]
 [test_dataChannel_basicVideo.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
@@ -31,7 +31,7 @@ skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g emulator seems to be to
 [test_enumerateDevices.html]
 skip-if = buildapp == 'mulet'
 [test_getUserMedia_audioCapture.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g emulator seems to be too slow (Bug 1016498 and 1008080)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g emulator seems to be too slow (Bug 1016498 and 1008080), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_getUserMedia_basicAudio.html]
 skip-if = (toolkit == 'gonk' || buildapp == 'mulet' && debug) # debug-only failure
 [test_getUserMedia_basicVideo.html]
@@ -46,7 +46,7 @@ skip-if = buildapp == 'mulet' || buildapp == 'b2g' || toolkit == 'android' # no
 skip-if = (toolkit == 'gonk' || buildapp == 'mulet' && debug) # debug-only failure, turned an intermittent (bug 962579) into a permanant orange
 [test_getUserMedia_constraints.html]
 [test_getUserMedia_callbacks.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' || toolkit == 'android' || buildapp == 'mulet' # Bug 1063290, intermittent timeout # TC: Bug 1144079 - Re-enable Mulet mochitests and reftests taskcluster-specific disables.
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || buildapp == 'mulet' # Bug 1063290, intermittent timeout # TC: Bug 1144079 - Re-enable Mulet mochitests and reftests taskcluster-specific disables.
 [test_getUserMedia_gumWithinGum.html]
 [test_getUserMedia_playAudioTwice.html]
 [test_getUserMedia_playVideoAudioTwice.html]
@@ -92,7 +92,7 @@ skip-if = buildapp == 'b2g' || buildapp == 'mulet' || os == 'android' # bug 1043
 [test_peerConnection_bug1064223.html]
 [test_peerConnection_capturedVideo.html]
 tags=capturestream
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_peerConnection_captureStream_canvas_2d.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
 [test_peerConnection_captureStream_canvas_webgl.html]
@@ -103,9 +103,9 @@ skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video suppo
 [test_peerConnection_closeDuringIce.html]
 [test_peerConnection_errorCallbacks.html]
 [test_peerConnection_iceFailure.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' || os == 'linux' || os == 'mac' || os == 'win' # Disabling because of test failures on B2G emulator (Bug 1180388 for win, mac and linux)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || os == 'linux' || os == 'mac' || os == 'win' || android_version == '18' # Disabling because of test failures on B2G emulator (Bug 1180388 for win, mac and linux), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_peerConnection_forwarding_basicAudioVideoCombined.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_peerConnection_noTrickleAnswer.html]
 skip-if = toolkit == 'gonk' # B2G emulator is too slow to handle a two-way audio call reliably
 [test_peerConnection_noTrickleOffer.html]
@@ -124,7 +124,7 @@ skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video suppo
 [test_peerConnection_callbacks.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
 [test_peerConnection_replaceTrack.html]
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || android_version == '18' # b2g(Bug 960442, video support for WebRTC is disabled on b2g), android(Bug 1189784, timeouts on 4.3 emulator)
 [test_peerConnection_syncSetDescription.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g(Bug 960442, video support for WebRTC is disabled on b2g)
 [test_peerConnection_setLocalAnswerInHaveLocalOffer.html]
@@ -142,14 +142,14 @@ skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g (Bug 1059867)
 [test_peerConnection_twoAudioTracksInOneStream.html]
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' # b2g (Bug 1059867)
 [test_peerConnection_twoAudioVideoStreams.html]
-# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s)
+# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s, android(Bug 1189784, timeouts on 4.3 emulator)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s) || android_version == '18'
 [test_peerConnection_twoAudioVideoStreamsCombined.html]
-# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s)
+# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s, android(Bug 1189784, timeouts on 4.3 emulator)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s) || android_version == '18'
 [test_peerConnection_twoVideoStreams.html]
-# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s
-skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s)
+# b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s, android(Bug 1189784, timeouts on 4.3 emulator)
+skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s) || android_version == '18'
 [test_peerConnection_twoVideoTracksInOneStream.html]
 # b2g(Bug 960442, video support for WebRTC is disabled on b2g), Bug 1180000 for Linux debug e10s
 skip-if = toolkit == 'gonk' || buildapp == 'mulet' || (os == 'linux' && debug && e10s)
@@ -178,11 +178,11 @@ skip-if = toolkit == 'gonk' # B2G emulator is too slow to finish a renegotiation
 [test_peerConnection_removeThenAddAudioTrackNoBundle.html]
 skip-if = toolkit == 'gonk' # B2G emulator is too slow to finish a renegotiation test in under 5 minutes
 [test_peerConnection_addSecondVideoStreamNoBundle.html]
-# B2G emulator is too slow to finish a renegotiation test in under 5 minutes, Bug 1180000 for Linux debug e10s
-skip-if = toolkit == 'gonk' || (os == 'linux' && debug && e10s)
+# B2G emulator is too slow to finish a renegotiation test in under 5 minutes, Bug 1180000 for Linux debug e10s, android(Bug 1189784, timeouts on 4.3 emulator)
+skip-if = toolkit == 'gonk' || (os == 'linux' && debug && e10s) || android_version == '18'
 [test_peerConnection_removeThenAddVideoTrackNoBundle.html]
-# B2G emulator is too slow to finish a renegotiation test in under 5 minutes, Bug 1180000 for Linux debug e10s
-skip-if = toolkit == 'gonk' || (os == 'linux' && debug && e10s)
+# B2G emulator is too slow to finish a renegotiation test in under 5 minutes, Bug 1180000 for Linux debug e10s, android(Bug 1189784, timeouts on 4.3 emulator)
+skip-if = toolkit == 'gonk' || (os == 'linux' && debug && e10s) || android_version == '18'
 [test_peerConnection_addDataChannel.html]
 skip-if = toolkit == 'gonk' # B2G emulator seems to be so slow that DTLS cannot establish properly
 [test_peerConnection_addDataChannelNoBundle.html]