Posted by Netmask on 11/29/07 05:09

"Travis" <trav1085@gmail.com> wrote in message
news:fa6c95af-732b-4b01-9ce8-f54653a5df7b@s36g2000prg.googlegroups.com...
> Someone explain these to me please, I have checked Wikipedia but I do
> not understand what they are saying. Standard NTSC TV is 480
> horizontal lines, interlaced or progressive (EDTV for progressive).
> The height can be any number divisible by 4, or as long as the Vert x
> Hor is 1.33 repeated, correct (CORRECTION, that works for any 4:3
> resolution - not just 480i/p)? So 640x480 is NTSC TV? But then DVD is
> 720x480 which is 3:2 (or 1.5) because the pixels are 4:3? And as they
> are non-square pixels, unlike a computer monitor, when you rip a DVD I
> often see it being ripped as 704x480, to remove the extra 16 pixels (8
> on each side) that would just be black on either side of the video
> when played on a normal system. But ... 704x480 is 1.467, I don't know
> what the ratio is for that (I mean the x:x).
>
> Who can clearify this?


A couple of links that may assist

http://www.mir.com/DMG/aspect.html

http://www.doom9.org/index.html?/aspectratios.htm

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