# Twilio Video Webinar

The [Twilio Built the Video Star](https://www.bigmarker.com/recordings/e978b5974df7) webinar introduces Twilio Video and walks you through building a sample video application.

The webinar presents the following topics:

* What is Twilio Video (starts at 4:45 in the video)
* Rooms, Access Tokens, and Participants (starts at 9:25 in the video)
* Building a user interface for a video application (starts at 17:47 in the video)
* The [Video Diagnostics App](https://github.com/twilio/twilio-video-diagnostics-react-app) (starts at 38:37 in the video)
* The [JavaScript Room Monitor](/docs/video/troubleshooting/javascript-room-monitor) (starts at 39:55 in the video)
* [Video Insights](/docs/video/troubleshooting/insights) (starts at 42:00 in the video)

Visit the [GitHub repository with the demo code](https://github.com/TwilioDevEd/level-up-video-aug-24).

For more information about upcoming webinars and other training events, check out the [Twilio Events page](https://www.twilio.com/en-us/events).