Convert your movies into WebM
You can easity convert movies into Webm using Miro Video Converter
Any Video Converter offers more options.
Watch WebM movies
You can use the VLC media player from www.videolan.org/vlc/ to watch WebM movies.
You can open a WebM video in Firefox, Opera or Chrome, which will play them directly.
Windows users can play WebM with the instructions on www.webmproject.org/users/
Mac users can install the WebM Quicktime Component
This is available from the WebM Downloads Page
Edit your movies
Not all video editors support WebM yet, so it may be necessary to either convert to a different format, or to render with a different format directly out of Moviestorm.
Moviestorm does offer lossless Huffyuv encoding - this takes a lot of disc space, but the video is compressed without losing any detail.
What is WebM?
WebM is the new high-quality open video format from Google.