WebM is an video format which consists of VP8 video and Vorbis audio. It provides open video compression for HTML5 videos and most major web browsers support WebM as a part of HTML5 video delivery. WebM is an alternative to the patented h.264 and MPEG4 standards, and is suitable for commercial and non-commercial applications.
More than 25 fps is idiotic
Higher quality means larger WebM file, more than 1 is idiotic
Size can be either source or something like 1280x720, 640x480
Output isnt optimized so if you want to have small files use ffmpeg/avconv or some other shit
WebM is an open media container compressed with VP8 video codec and Vorbis audio codec. WebM format has high video playback quality and data compression parameters.The format is widely used for adding media to web pages and it is supported by all modern web-browsers like Opera, Mozilla Firefox and Google Chrome. The embedding of WebM videos to a site page realizes without delays and errors. WebM is meant to be an alternative to the h.264 standard.
The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013, it was updated to accommodate VP9 video and Opus audio.
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.
They may recompress the video to another format in a process called transcoding, or may simply change the container format without changing the video format. The disadvantages to transcoding are that there is quality loss when transcoding between lossy compression formats.
How to open a WEBM file?
VLC media player and MPlayer can open WEBM files on any operating system (OS). Other good choices for opening WEBM include Winamp for Microsoft Windows OS, and Elmedia for Mac OS X.