diff --git a/webrtc/RTCRtpTransceiver-setCodecPreferences.html b/webrtc/RTCRtpTransceiver-setCodecPreferences.html
index f779f5a94ca4959..5d59e3015b32bce 100644
--- a/webrtc/RTCRtpTransceiver-setCodecPreferences.html
+++ b/webrtc/RTCRtpTransceiver-setCodecPreferences.html
@@ -7,28 +7,6 @@
 <script>
   'use strict';
 
-  // Test is based on the following editor draft:
-  // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
-
-  /*
-    5.4.  RTCRtpTransceiver Interface
-      interface RTCRtpTransceiver {
-        ...
-        void setCodecPreferences(sequence<RTCRtpCodecCapability> codecs);
-      };
-
-      setCodecPreferences
-        - Setting codecs to an empty sequence resets codec preferences to any
-          default value.
-
-        - The codecs sequence passed into setCodecPreferences can only contain
-          codecs that are returned by RTCRtpSender.getCapabilities(kind) or
-          RTCRtpReceiver.getCapabilities(kind), where kind is the kind of the
-          RTCRtpTransceiver on which the method is called. Additionally, the
-          RTCRtpCodecParameters dictionary members cannot be modified. If
-          codecs does not fulfill these requirements, the user agent MUST throw
-          an InvalidModificationError.
-   */
   /*
    * Chromium note: this requires build bots with H264 support. See
    *   https://bugs.chromium.org/p/chromium/issues/detail?id=840659
@@ -39,9 +17,9 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     transceiver.setCodecPreferences(capabilities.codecs);
-  }, `setCodecPreferences() on audio transceiver with codecs returned from RTCRtpSender.getCapabilities('audio') should succeed`);
+  }, `setCodecPreferences() on audio transceiver with codecs returned from RTCRtpReceiver.getCapabilities('audio') should succeed`);
 
   test((t) => {
     const pc = new RTCPeerConnection();
@@ -51,15 +29,6 @@
     transceiver.setCodecPreferences(capabilities.codecs);
   }, `setCodecPreferences() on video transceiver with codecs returned from RTCRtpReceiver.getCapabilities('video') should succeed`);
 
-  test((t) => {
-    const pc = new RTCPeerConnection();
-    t.add_cleanup(() => pc.close());
-    const transceiver = pc.addTransceiver('audio');
-    const capabilities1 = RTCRtpSender.getCapabilities('audio');
-    const capabilities2 = RTCRtpReceiver.getCapabilities('audio');
-    transceiver.setCodecPreferences([...capabilities1.codecs, ... capabilities2.codecs]);
-  }, `setCodecPreferences() with both sender receiver codecs combined should succeed`);
-
   test((t) => {
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
@@ -71,7 +40,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     const { codecs } = capabilities;
 
     if(codecs.length >= 2) {
@@ -87,7 +56,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('video');
-    const capabilities = RTCRtpSender.getCapabilities('video');
+    const capabilities = RTCRtpReceiver.getCapabilities('video');
     const { codecs } = capabilities;
     // This test verifies that the mandatory VP8 codec is present
     // and can be set.
@@ -104,7 +73,7 @@
   test(() => {
     const pc = new RTCPeerConnection();
     const transceiver = pc.addTransceiver('video');
-    const capabilities = RTCRtpSender.getCapabilities('video');
+    const capabilities = RTCRtpReceiver.getCapabilities('video');
     const { codecs } = capabilities;
     // This test verifies that the mandatory H264 codec is present
     // and can be set.
@@ -120,7 +89,7 @@
 
   async function getRTPMapLinesWithCodecAsFirst(firstCodec)
   {
-     const capabilities = RTCRtpSender.getCapabilities('video').codecs;
+     const capabilities = RTCRtpReceiver.getCapabilities('video').codecs;
      capabilities.forEach((codec, idx) => {
        if (codec.mimeType === firstCodec) {
           capabilities.splice(idx, 1);
@@ -133,28 +102,28 @@
      transceiver.setCodecPreferences(capabilities);
      const offer = await pc.createOffer();
 
-     return offer.sdp.split('\r\n').filter(line => line.indexOf("a=rtpmap") === 0);
+     return offer.sdp.split('\r\n').filter(line => line.indexOf('a=rtpmap:') === 0);
   }
 
   promise_test(async () => {
     const lines = await getRTPMapLinesWithCodecAsFirst('video/H264');
 
     assert_greater_than(lines.length, 1);
-    assert_true(lines[0].indexOf("H264") !== -1, "H264 should be the first codec");
+    assert_true(lines[0].indexOf('H264') !== -1, 'H264 should be the first codec');
   }, `setCodecPreferences() should allow setting H264 as first codec`);
 
   promise_test(async () => {
     const lines = await getRTPMapLinesWithCodecAsFirst('video/VP8');
 
     assert_greater_than(lines.length, 1);
-    assert_true(lines[0].indexOf("VP8") !== -1, "VP8 should be the first codec");
+    assert_true(lines[0].indexOf('VP8') !== -1, 'VP8 should be the first codec');
   }, `setCodecPreferences() should allow setting VP8 as first codec`);
 
   test((t) => {
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('video');
+    const capabilities = RTCRtpReceiver.getCapabilities('video');
     assert_throws_dom('InvalidModificationError', () => transceiver.setCodecPreferences(capabilities.codecs));
   }, `setCodecPreferences() on audio transceiver with codecs returned from getCapabilities('video') should throw InvalidModificationError`);
 
@@ -190,7 +159,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     const codecs = [
       ...capabilities.codecs,
       {
@@ -207,7 +176,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     const codecs = [capabilities.codecs[0]];
     codecs[0].clockRate = codecs[0].clockRate / 2;
 
@@ -218,7 +187,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     const codecs = [capabilities.codecs[0]];
     codecs[0].channels = codecs[0].channels + 11;
 
@@ -229,7 +198,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
     const codecs = [capabilities.codecs[0]];
     codecs[0].sdpFmtpLine = "modifiedparameter=1";
 
@@ -240,7 +209,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const capabilities = RTCRtpSender.getCapabilities('audio');
+    const capabilities = RTCRtpReceiver.getCapabilities('audio');
 
     const { codecs } = capabilities;
     assert_greater_than(codecs.length, 0,
@@ -253,11 +222,34 @@
     assert_throws_dom('InvalidModificationError', () => transceiver.setCodecPreferences(codecs));
   }, `setCodecPreferences() with modified codecs returned from getCapabilities() should throw InvalidModificationError`);
 
+  promise_test(async (t) => {
+    const pc = new RTCPeerConnection();
+    t.add_cleanup(() => pc.close());
+    const transceiver = pc.addTransceiver('video');
+    const receive_capabilities = RTCRtpReceiver.getCapabilities('video');
+    const send_capabilities = RTCRtpSender.getCapabilities('video');
+    let sendonly_codec = undefined;
+    for (const send_codec of send_capabilities.codecs) {
+      const matching_receive_codec = receive_capabilities.codecs.find(receive_codec => {
+        return receive_codec.mimeType === send_codec.mimeType &&
+            receive_codec.clockRate === send_codec.clockRate &&
+            receive_codec.channels === send_codec.channels &&
+            receive_codec.sdpFmtpLine === send_codec.sdpFmtpLine;
+      });
+      if (!matching_receive_codec) {
+        sendonly_codec = send_codec;
+        break;
+      }
+    }
+    assert_true(!!sendonly_codec);
+    assert_throws_dom('InvalidModificationError', () => transceiver.setCodecPreferences([sendonly_codec]));
+  }, `setCodecPreferences() with a send-only codec should throw InvalidModificationError`);
+
   promise_test(async (t) => {
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('audio');
-    const {codecs} = RTCRtpSender.getCapabilities('audio');
+    const {codecs} = RTCRtpReceiver.getCapabilities('audio');
     // Reorder codecs, put PCMU/PCMA first.
     let firstCodec;
     let i;
@@ -283,7 +275,7 @@
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
     const transceiver = pc.addTransceiver('video');
-    const {codecs} = RTCRtpSender.getCapabilities('video');
+    const {codecs} = RTCRtpReceiver.getCapabilities('video');
     // Reorder codecs, swap H264 and VP8.
     let vp8 = -1;
     let h264 = -1;
@@ -318,5 +310,4 @@
     const rtpParameters = SDPUtils.parseRtpParameters(mediaSection);
     assert_equals(rtpParameters.codecs[0].name, firstCodec);
   }, `setCodecPreferences() modifies the order of video codecs in createOffer`);
-
  </script>