述：</h5>
<p><font color="#666">当有新增码流源时回调此方法。 <br><br><code><i>MSDK 5.0.0开始支持</i></code></font></p>
<h5 id="输入参数：">输入参数：</h5>
<html><table class="table-inline-parameters"><tr valign="top"><td><font color="#70BF41">@Nullable List&lt;<a href="../../Components/IMediaDataCenter/IVideoStreamManager_StreamSource.html#ivideostreammanager_streamsource">StreamSource</a>&gt; <font color="#000">sources</font></font></td><td><font color="#666"><i>码流源列�