A WEBM file is a video in the open WebM format, which is widely used to broadcast videos over the Internet, including on the YouTube platform. WebM is a container format (with a * .webm file ending) for multimedia files, that is, for video and audio files. The file with the WEBM extension is an innovative video presentation format that was released by Google in 2010. WEBM format is supported by the latest versions of most popular web browsers such as Google Chrome, Safari, Edge, Mozilla Firefox, and others.