No slow motion playback of AVI and MPG clips

I am running XP Home SP2 and Microsoft Media Player 11.

My still camera, a Canon S2 IS, takes VGA res, 30 fps, AVI video clips.

Microsoft Media Player has controls for playback speed (Fast, Normal, Slow
or variable per slider), but it does not seem to be enabled for these
videos.

I used Super to convert the AVIs to MPGs, but still the playback speed
controls would not function.

Is there a problem with my video format?

It works fine in Real Player, albeit too jerky at the slowest speed. What
could the problem with MS Media Player be? Are there better players for
slow motion?

- David

Media Player won't change the playback speed for anything but Microsoft
formats such as WMV and ASF. There are also certain tags that are
un-editable in non-Microsoft formats from within Media Player.