Why is only .flv and .mp4 supported for video uploads?

Currently seesmic only supports flash video and the mp4 format when you want to post a video. That's a bummer if you, like me, have a webcam that records in ogg vorbis for example. Of course I could use a conversion tool, but that's a real hassle.

So hereby I would like to propose to implement the open Ogg-vorbis standard for video uploads as well.

Kind regards

Kris