the max file size is really small for a video compressor, and although webm's may be better in some cases they are non standard and many services don't support them. 8mb is small enough for most services so if your video is under 8mb you usually wouldn't need a compressor to send it across the we.
The Un-official Messenger Button
Makerpad
The Outsider: Invest in America
The Un-official Messenger Button
Intercom