diff --git a/media/engine/webrtc_media_engine.cc b/media/engine/webrtc_media_engine.cc
index 05d6e6e0bd..99d7dd2704 100644
--- a/media/engine/webrtc_media_engine.cc
+++ b/media/engine/webrtc_media_engine.cc
@@ -178,14 +178,20 @@ std::vector<webrtc::RtpExtension> FilterRtpExtensions(
         });
     result.erase(it, result.end());
 
-    // Keep just the highest priority BWE related extension and do not send
-    // toffset if transport-cc or abs-send-time have been negotiated.
-    // abs-send-time is sent even if transport-cc is negotiated for logging
-    // purposes.
-    static const char* const kBweExtensionPriorities[] = {
-        webrtc::RtpExtension::kAbsSendTimeUri,
-        webrtc::RtpExtension::kTimestampOffsetUri};
-    DiscardRedundantExtensions(&result, kBweExtensionPriorities);
+    // Keep just the highest priority extension of any in the following lists.
+    if (absl::StartsWith(trials.Lookup("WebRTC-FilterAbsSendTimeExtension"),
+                         "Enabled")) {
+      static const char* const kBweExtensionPriorities[] = {
+          webrtc::RtpExtension::kTransportSequenceNumberUri,
+          webrtc::RtpExtension::kAbsSendTimeUri,
+          webrtc::RtpExtension::kTimestampOffsetUri};
+      DiscardRedundantExtensions(&result, kBweExtensionPriorities);
+    } else {
+      static const char* const kBweExtensionPriorities[] = {
+          webrtc::RtpExtension::kAbsSendTimeUri,
+          webrtc::RtpExtension::kTimestampOffsetUri};
+      DiscardRedundantExtensions(&result, kBweExtensionPriorities);
+    }
   }
   return result;
 }
diff --git a/media/engine/webrtc_media_engine_unittest.cc b/media/engine/webrtc_media_engine_unittest.cc
index 6b187cca89..4615f03deb 100644
--- a/media/engine/webrtc_media_engine_unittest.cc
+++ b/media/engine/webrtc_media_engine_unittest.cc
@@ -217,6 +217,23 @@ TEST(WebRtcMediaEngineTest, FilterRtpExtensionsRemoveRedundantEncrypted2) {
   EXPECT_NE(filtered[1].uri, filtered[2].uri);
 }
 
+TEST(WebRtcMediaEngineTest, FilterRtpExtensionsRemoveRedundantBwe1) {
+  webrtc::test::ScopedKeyValueConfig trials(
+      "WebRTC-FilterAbsSendTimeExtension/Enabled/");
+  std::vector<RtpExtension> extensions;
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 3));
+  extensions.push_back(RtpExtension(RtpExtension::kTimestampOffsetUri, 9));
+  extensions.push_back(RtpExtension(RtpExtension::kAbsSendTimeUri, 6));
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 1));
+  extensions.push_back(RtpExtension(RtpExtension::kTimestampOffsetUri, 14));
+  std::vector<webrtc::RtpExtension> filtered =
+      FilterRtpExtensions(extensions, SupportedExtensions2, true, trials);
+  EXPECT_EQ(1u, filtered.size());
+  EXPECT_EQ(RtpExtension::kTransportSequenceNumberUri, filtered[0].uri);
+}
+
 TEST(WebRtcMediaEngineTest,
      FilterRtpExtensionsRemoveRedundantBwe1KeepAbsSendTime) {
   std::vector<RtpExtension> extensions;
@@ -235,6 +252,29 @@ TEST(WebRtcMediaEngineTest,
   EXPECT_EQ(RtpExtension::kAbsSendTimeUri, filtered[1].uri);
 }
 
+TEST(WebRtcMediaEngineTest, FilterRtpExtensionsRemoveRedundantBweEncrypted1) {
+  webrtc::test::ScopedKeyValueConfig trials(
+      "WebRTC-FilterAbsSendTimeExtension/Enabled/");
+  std::vector<RtpExtension> extensions;
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 3));
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 4, true));
+  extensions.push_back(RtpExtension(RtpExtension::kTimestampOffsetUri, 9));
+  extensions.push_back(RtpExtension(RtpExtension::kAbsSendTimeUri, 6));
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 1));
+  extensions.push_back(
+      RtpExtension(RtpExtension::kTransportSequenceNumberUri, 2, true));
+  extensions.push_back(RtpExtension(RtpExtension::kTimestampOffsetUri, 14));
+  std::vector<webrtc::RtpExtension> filtered =
+      FilterRtpExtensions(extensions, SupportedExtensions2, true, trials);
+  EXPECT_EQ(2u, filtered.size());
+  EXPECT_EQ(RtpExtension::kTransportSequenceNumberUri, filtered[0].uri);
+  EXPECT_EQ(RtpExtension::kTransportSequenceNumberUri, filtered[1].uri);
+  EXPECT_NE(filtered[0].encrypt, filtered[1].encrypt);
+}
+
 TEST(WebRtcMediaEngineTest,
      FilterRtpExtensionsRemoveRedundantBweEncrypted1KeepAbsSendTime) {
   std::vector<RtpExtension> extensions;
diff --git a/media/engine/webrtc_video_engine_unittest.cc b/media/engine/webrtc_video_engine_unittest.cc
index 10caf667c5..aa59ce4d8d 100644
--- a/media/engine/webrtc_video_engine_unittest.cc
+++ b/media/engine/webrtc_video_engine_unittest.cc
@@ -3122,6 +3122,17 @@ TEST_F(WebRtcVideoChannelTest, RecvAbsoluteSendTimeHeaderExtensions) {
   TestSetRecvRtpHeaderExtensions(RtpExtension::kAbsSendTimeUri);
 }
 
+TEST_F(WebRtcVideoChannelTest, FiltersExtensionsPicksTransportSeqNum) {
+  webrtc::test::ScopedKeyValueConfig override_field_trials(
+      field_trials_, "WebRTC-FilterAbsSendTimeExtension/Enabled/");
+  // Enable three redundant extensions.
+  std::vector<std::string> extensions;
+  extensions.push_back(RtpExtension::kAbsSendTimeUri);
+  extensions.push_back(RtpExtension::kTimestampOffsetUri);
+  extensions.push_back(RtpExtension::kTransportSequenceNumberUri);
+  TestExtensionFilter(extensions, RtpExtension::kTransportSequenceNumberUri);
+}
+
 TEST_F(WebRtcVideoChannelTest, FiltersExtensionsPicksAbsSendTime) {
   // Enable two redundant extensions.
   std::vector<std::string> extensions;