Ipod inquiry

I read the specifications on what video specs to use in order to allow my users to view my videos on their ipods and ipads. I, however, noticed that though the quality looked fine on ipods and ipads, the same video did not look as good when watching on PCs. Is there a way to allow my users to see high quality videos while allowing my Ipod users to also view the videos, without adding multiple players to my page?

I was thinking that possibly, I could create a High Quality MP4 and have a lower MP4 for my ipod users, and WebM as a fallback, but I don't know if this even makes sense.

I don't know if it's even needed, but my webpage is

http://bailasociety.tv/public/850.cfm

The first two videos are what I'm comparing. Will I just have to live with the slightly lower quality or can I make that quality video only available for my ipod users, while allowing my pc users to get a better quality...all this without me loading 4 videos on a page.

My goal is only to load two videos per page. One will be a demo video with music and another will be an instructional video explaining the dance moves. I don't mind having to render multiples. I bought a computer specifically to be able to handle doing something that taxing so if that's what I have to do, I'm fine with it for now till I get my videographer and web/video-management chops and see that I can do things much simpler. For now I just need to get videos outs so if what I'm asking is possible, you would be giving me an awesome 2012 sofar by showing me how to do it or where I can find the instructions to do it.

--
Beginner videographer and web video content-maker.