This is a variant of the original VideoRoom demo, but taking advantage of the recently added multistream support to use a single PeerConnection to receive all the contributions, rather than creating a different one for each subscription. Apart from this, the same considerations apply.
To use the demo, just insert a username to join the default room that is configured. This will add you to the list of participants, and allow you to automatically send your audio/video frames and receive the other participants' feeds. The other participants will appear in separate panels, whose title will be the names they chose when registering at the demo.
Press the Start button above to launch the demo.