Within the Media tab, you're able to update your Youtube Stream URL and upload your recorded live stream once it has ended.
How is Archived Media Displayed?
With the stream status in Archived, this will update your Live Stream Content page to display a video. This video can be uploaded here via the Media tab and displayed to those who could not make the live version of your stream.
Archived Live streams are displayed publicly on your site, and are searchable. Learn more about statuses here.