what does 480i/480p, 720p/1080i mean? Whats with the I's and P's??

Question

All I want to know is what does 480i/480p, 720p/1080i mean just like the question. I would also like to know whats better.

Answer 1

Everything Poll Man said is correct.

The following is a less complicated explanation.

To begin with the “p” in 480p and 720p indicates progressive. Progressive images are “painted” vertically consecutively line 1, and then line 2, followed by line 3, etc. Computer Monitors are always progressive allowing users to sit very close with minimal eye strain. 480p indicates 480 Progressive lines (typically called Enhance Definition) and 720p indicates 720 Progressive lines (one of two American High Definition standards)

The “i” in 480i and 1080i indicates interlaced. Interlaced images are drawn vertically line 1, and then line 3 to the bottom of the screen, followed by a second sweep filling in line 2, followed by line 4, etc. This is done quick enough to fool the eye / brain into seeing a coherent image. American television (standard definition) has been interlaced since 1941.480i indicates 480 interlaced lines (standard definition) and 1080i indicates 1080 interlaced lines (the second American High Definition standard)

Despite what a salesman tells you - it’s doubtful anyone can tell the difference between the two high definition standards 1080i and 720p. The standards apply to both display devises (televisions) and broadcast networks.

To further demonstrate the equality of the two standards only the ABC networks (including ESPN) broadcasts in 720p. All others broadcast in 1080i. A 1080i television seamlessly converts ABC channels into 1080i. A 720p television effortlessly coverts NBC, and HBO into 720p.

Answer 2

It's the resolution. get 1080p.