Forum Moderators: not2easy
If you want to put the files on your website you could use .mov or .wmv formats.
If you want to use .mov just upgrade your copy of Qucktime to Quicktome Pro (I forget how much, but it's not expensive). You can then load up the MPEG2 file, apply lots of compression to it and end up with a much smaller MOV file suitable for streaming. You will probably have to lose a lot of quality e.g. reduce frame rate, size of screen, colour depth, sound quality etc... I normally start with a target file size in mind, based on people's likely connection speed and mess around with these options until I find the best compromise. This takes ages as you have to wait for each attempt to compress before viewing the results.
I've not tried compressing to wmv format, but I would expect that similar software is available for this purpose.