Embedding video calls into an application can be done with videosdk.live's pre-built, which allows developers to add real-time communication without writing explicit code. The pre-built supports modern JavaScript frameworks such as React JS, Vue, and Angular, and provides features like end-to-end encrypted calls, HD and Full HD video calls, audio support of 16kHz to 48kHz, and cloud recording. To get started, sign up for a free account, generate an API key and secret, import the script in your HTML page, add script and set up the meeting, and run the application using an HTTP server. The pre-built also offers a free setup with 10,000 minutes of usage per month, making it easy to integrate video calls into applications.