The source, an article by Anand Vijayaragavan on Medium, explains how to create a video playlist using the new Stream feature in SharePoint. It details the steps involved, including uploading videos to a document library, adding rich metadata like title and description, and formatting views with JSON to create a visually appealing playlist. The article also provides instructions on how to embed the playlist into a SharePoint site page using web parts. The author emphasizes that the new Stream is built on top of SharePoint and OneDrive, allowing for seamless integration with existing functionalities.