The Twilio Video Room Monitor is an open-source debugging tool that displays real-time information and metrics for a Twilio Video room and its participants. It can be embedded into any JavaScript project built with the twilio-video.js library, providing detailed views of active video rooms, participants, and media tracks, as well as network usage graphs. The monitor can be launched in various browsers, including Chrome, Safari, Firefox, and Edge, using a convenient JavaScript console method or by installing the package with npm. However, users may encounter issues due to lack of global access to the video room object or Content Security Policy restrictions, which require alternative solutions such as downloading and sourcing the script locally.