...
screen-camera-mixer.css - styles file
screen-camera-mixer.html - example HTML page
screen-camera-mixer.js - main example script
The example may be tetsted tested by the fiollowing following address:
https://host:8888/client2/examples/demo/streaming/screen-camera-mixer/screen-camera-mixer.html
where host is WCS server address.
...
Analyzing the code
To analyze the code let's take a screen-camera-mixer.js version with hash 32144d9, which is available here and may be downloaded in build 2.0.243.
...