What is WEBM and why would you want to turn your videos into WEBM? There are several good reasons for that. First of all, WEBM is a completely royalty-free video format, which means that many people can work with it and introduce improvements. Secondly, WEBM is a video format that is supported by many browsers such as Opera, Google Chrome, and Mozilla Firefox for seamless video playback.
It is widely used for all kinds of HTML5-video-players, for example by Skype, Nintendo, Logitech and more! If you want to use your video online, for streaming or better support, consider converting to WEBM.