Sorry for having it put in a wrong way.
4:3 is the old standard aspect ratio and this is gonna be outdated.Though many of the programs that u watch on ur widescrren Tv appears to be 16:9, they are actually 4:3 and squeezed to 16:9.
All New Tv and monitors come in 16:9 ratio.
16:9 is the widescreen and high definition is also based on 16:9.
HD's are going to be evreywhere soon
blue ray disc and HD DVD all support HD video.
There r few channelse transmitting HD.

Ramadan kareem.