esDidChange</code> callback, so you can track the states of remote video sources for future subscriptions. You need a variable like <code>roster: any = {}</code> to keep track of which attendees in the meeting are publishing videos. Check <a href="https://github.com/aws/amazon-chime-sdk-js#attendees">use case 24</a> for more details.</p>
							<ul>
								<li>Note: You may want to keep the content sharing in your <code>roster</code>, depending on your needs.</li>
							</ul>
						</li>
					</ol>
					<