Why mpeg ?
Do you have a Mac computer ?
The wmv format is videly used everywhere (in Europe at least), as it performs better with clearer video, and take up much less space.
You can not edit in a finished wmv (as far as I know), like you can in mpg or some other formats - but you are not allowed to edit others videos anyway - so it would not matter.
But you get the best video, with short download time !
As you are from Sweden, you of course know our Danish videos on http://www.kitesurferen.dk
It is mostly wmv - and sometimes there is an mpeg version too, for those with Macs.
There are lots of Quicktime (mov) videos around the world also (some Mac originated).
But it has to be mpeg only you say ???