Media 100 would be able to use these Codecs, but it doesn't install them. If you have access to another system that has these Codecs (your own system or someone else's), you should be able to copy them from that system to this one. The location that these Components would be is here -
Macintosh HD :: Library :: Quicktime
If you are unable to access a system with these Codecs/Components, you might be able to download them somewhere. Primarily what you would be looking for are the Apple Quicktime Components.