diff --git a/amendments.js b/amendments.js
index 249816e93..6f39155ba 100644
--- a/amendments.js
+++ b/amendments.js
@@ -18,13 +18,19 @@ function removeComments(el) {
 
 function markInsertion(el, controller) {
   const wrapper = document.createElement("ins");
-  if (el.tagName === "DIV" || el.tagName === "SECTION" || el.tagName === "DT"  || el.tagName === "DD"  || el.tagName === "LI") {
+  if (el.tagName === "DIV" || el.tagName === "SECTION" || el.tagName === "DT"  || el.tagName === "DD"  || el.tagName === "LI" || el.tagName === "TR") {
     // special casing the case where <div> is used to group <dt>/<dd>
     if (el.tagName === "DIV" && el.parentNode.tagName === "DL") {
       for (let child of el.children) {
 	wrapChildNodes(child, document.createElement("ins"));
       }
       el.children[0].prepend(controller);
+    } else if (el.tagName === "TR") {
+      for (let child of el.children) {
+	wrapChildNodes(child, document.createElement("ins"));
+      }
+      el.children[0].prepend(controller);
+
     } else {
       wrapChildNodes(el, wrapper);
       el.prepend(controller);
diff --git a/amendments.json b/amendments.json
index f485388eb..d268a3b11 100644
--- a/amendments.json
+++ b/amendments.json
@@ -587,6 +587,23 @@
       ]
     }
   ],
+  "def-constraint-channelCount": [
+    {
+      "description": "Add channelCount to remote track settings",
+      "type": "addition",
+      "status": "candidate",
+      "difftype": "append",
+      "id": 53,
+      "pr": 3025,
+      "tests": [
+  "webrtc/RTCRtpEncodingParameters-codec-opus-stereo.https.html"
+      ],
+      "testUpdates": [
+  "web-platform-tests/wpt#48599",
+  "web-platform-tests/wpt#49392"
+      ]
+    }
+  ],
   "codec-match-without-level-id": [
     {
       "description": "Two codecs are considered the same even if level-id is not",
diff --git a/webrtc.html b/webrtc.html
index 9edb4d3b5..1a4740288 100644
--- a/webrtc.html
+++ b/webrtc.html
@@ -16732,6 +16732,29 @@ <h4>
                   double rounded to the tenth decimal place.
                 </td>
               </tr>
+              <tr id="def-constraint-channelCount">
+                <th data-tests="RTCRtpEncodingParameters-codec-opus-stereo.https.html">
+                  channelCount
+                </th>
+                <td>
+                  {{ConstrainULong}}
+                </td>
+                <td>
+                  As a setting, this is the number of {{RTCRtpCodec/channels}}
+                  that the decoder produced when the last audio frame was
+                  decoded. The number of channels that the decoder produces MUST
+                  reflect the number of channels configured when the local SDP
+                  was set. Before any frames have been decoded, this setting
+                  MUST NOT [=map/exist=].
+                  <p class="note">
+                    For example, the opus audio codec has a "stereo" flag. If
+                    "stereo=0" was negotiated, the decoder produces one channel
+                    regardless if the bitstream is mono or stereo, and if
+                    "stereo=1" was negotiated, the decoder produces two channels
+                    regardless if the bitstream is mono or stereo.
+                  </p>
+                </td>
+              </tr>
             </tbody>
           </table>
           <p class="no-test-needed">