Confused about NTSC and 4:3 & 16:9

[soundgeek2496]

I know the differences between 4:3 and 16:9 ratios and how either or get translated onto either size display, but what I'm not understanding is what NTSC has to do with the two different aspect ratios. ie:

If I have a DVD that is formatted at a widescreen (16:9) format and send it to a widescreen display that is currently set to display at a 16:9 ratio, is there any converting happening between the DVD player and Display unit?

Using a similar example above but using a 4:3 formatted source from the DVD to the display that is still set to display at 16:9 ratio, would the display be converting the 4:3 source to fit the 16:9, making things zoomed or stretched?

The final question is, even though the DVD says it's formatted in widescreen (16:9), is the actual signal itself a typical 4:3 (NTSC) signal that is being converted by the display back into a 16:9 image? It's this broadcast NTSC standard of a 4:3 ratio that is confusing when trying to determine how a 16:9 format is being transfered via hardwire or broadcast carrier....

thanks in advance for any clairty on this

[BasharOfTheAges]

NTSC is just the frame rate (29.97), number of lines (525), and the refresh rate (60Hz) essentially.

As for the hardware issues, I can't answer... I believe the TV or projector takes the signal it receives and adds boarders if needed, but i'm not sure.

I'm curious as to how this information is related to AMV encoding though.

[soundgeek2496]

NTSC is just the frame rate (29.97), number of lines (525), and the refresh rate (60Hz) essentially.


That makes sense to me.. thanks for that clarification. One question to add to that though, since I can't seem to find the info anywhere, but are there the same amount of lines (525) in a 4:3 and 16:9?

[BasharOfTheAges]

http://en.wikipedia.org/wiki/NTSC has it all.