This article explains what a WEBM file is, how to play it on your devices, and how to convert it to another file format, such as an MP4 video file or an MP3 audio file.

This is a video file based on the same video format that uses the MKV file extension. Since this format is sometimes used on websites for video streaming, it is supported by most web browsers.

VLC is a versatile media player that supports this format, but you can also open a WEBM video with most modern web browsers, including Chrome, Opera, Firefox, and Edge.

This video format is also supported by Windows Media Player (if DirectShow Filters are also installed), MPlayer, KMPlayer and Miro.