Attach simulcast offer sendEncodings to suitable (addTrack) transceiver.

w3c · Apr 1, 2019 · d9ee35d · d9ee35d
1 parent e38ba0c
commit d9ee35d
Showing 1 changed file with 16 additions and 10 deletions.
diff --git a/webrtc.html b/webrtc.html
@@ -1750,21 +1750,27 @@ <h4>Set the RTCSessionDescription</h4>
                             object, <var>transceiver</var>, to represent the <a>media
                             description</a>.</p>
                           </li>
+                          <li>
+                            <p>If the <var>description</var> is of type <code>"offer"</code>
+                            and contains a request to receive simulcast, use the order
+                            of the rid values specified in the simulcast attribute to create
+                            an <code><a>RTCRtpEncodingParameters</a></code> dictionary for
+                            each of the simulcast layers, populating the <code>rid</code> member
+                            according to the corresponding rid value, and let <var>sendEncodings</var>
+                            be the list containing the created dictionaries. Otherwise,
+                            let <var>sendEncodings</var> be an empty list.</p>
+                          </li>
+                          <li>
+                            <p>If a suitable transceiver is found (<var>transceiver</var>
+                            is set) and <var>sendEncodings</var> is non-empty, set
+                            <var>transceiver</var>.<a>[[\Sender]]</a>.<a>[[\sendEncodings]]</a>
+                            to <var>sendEncodings</var>.</p>
+                          </li>
                           <li>
                             <p>If no suitable transceiver is found
                             (<var>transceiver</var> is unset), run the following
                             steps:</p>
                             <ol>
-                              <li>
-                                <p>If the <var>description</var> is of type <code>"offer"</code>
-                                and contains a request to receive simulcast, use the order
-                                of the rid values specified in the simulcast attribute to create
-                                an <code><a>RTCRtpEncodingParameters</a></code> dictionary for
-                                each of the simulcast layers, populating the <code>rid</code> member
-                                according to the corresponding rid value, and let <var>sendEncodings</var>
-                                be the list containing the created dictionaries. Otherwise,
-                                let <var>sendEncodings</var> be an empty list.</p>
-                              </li>
                               <li>
                                 <p><a>Create an RTCRtpSender</a>, <var>sender</var>,
                                 from the <a>media description</a> using <var>sendEncodings</var>.</p>