Hey guys..can someone try and explai n the whole 4:2:2 and 4:1:1 thing to me ? I keep hearing it..yet...i am clueless..

This is the colour space of uncompressed video versus the way colours are divided and tossed or interpolated when compressed such as when dealing with dv.

Do a search and you'll find much more in depth technical discussion.

Also, you'll attract more attention if you make your thread title a little less vague ....

See http://www.adamwilt.com/DV-FAQ-tech.html

Most/a lot of video compression formats use YUV encoding,
the numbers represent the sampling the algorithm uses in YUV
mode.

So 4:2:2 means for every 4 samples of Y there are 2 samples of
U and V. You can figure out 4:1:1. There is also 4:2:0, this
doesn't mean V isn't sampled at all, but that this happens every
other line.