"Simulcast" is a technique to receive the same video stream at different resolutions and show the optimal resolution based on the user's internet connection.
Enter a channel and press the "CREATE" button to create a channel.
Open this link in another tab or a browser. Then
click on the channel you created from the channel list.
Viewers can select choose from three quality options to receive streams in different resolutions. (You can see the current resolution through the stat report.)