questions for 550D - please answer

[questionHaver]

  hallo my name is gabriel, I am new here and have dum questions. please forgive if posting in wrong place, but my questions around RAW video. I want make best video rig for minimal price and I think 550D and MagicLantern, but before I will buy Camere I need to know somethings about ML.

1. What is RAW VIDEO??? I think it is just uncompressed pictures(video) direct from Matrix am I right??

2. RAW video and clean HDMI is same(am I right??) and if I have external recorder can I get full 1080p 24fps raw video on 550D??

3. What is max resolution of RAW video (not below 24fps) in 550D with Fastest SDcard (I know it is around 21mb this camera limit)

I looked at this doc but confused:
https://docs.google.com/spreadsheet/ccc?key=0AgQ2MOkAZTFHdFFIcFp1d0R5TzVPTVJXOEVyUndteGc&usp=drive_web#gid=5

[dmilligan]

1. http://en.wikipedia.org/wiki/Raw_image_format
2. No, No
3. 960x540 according to that chart