Re: NTSC / PAL - what are these and when should I use them?

From: seanwales (seanwales_at_discussions.microsoft.com)
Date: 11/29/04 

Date: Sun, 28 Nov 2004 23:29:02 -0800

NTSC is for North American format movies and PAL is for European.

"Rehan" wrote:

> NTSC/PAL ones conform to these standard while the other ones do not
> necessarily do. One important difference is the NTSC/PAL standards specify
> non-square pixel encoding.
>
> For example "High quality video (large)" uses frame size of 640x480 while
> "high quality video (NTSC)" uses 720x480 resolution to encode a 4:3 frame.
> These 720 pixels are slightly squeezed in horizontal direction and therefore
> map to 640 pixels of the screen. Therefore the final output on a computer
> would still be shown in a 4:3 frame of 640x480.
>
> Computer screens always show and have 1:1 pixel aspect ratio. Therefore any
> material originating from computers such as still images and screen captures
> etc should be output using a profile that uses square pixels such "High
> quality video (large)" while almost all camcorders capture video in
> non-square pixel encoding so such video should be saved with a profile
> matching their pixel encoding such as "High Quality video (NTSC)".
>
> --
> Rehan
> www.rehanfx.org - get more effects and transitions for movie maker
>
>
>
>
>
> "John" <anonymous@discussions.microsoft.com> wrote in message
> news:17aa01c4bc28$1630ff00$a501280a@phx.gbl...
> > When capturing video, there are several options to save
> > as. I see 2 options that seem to be the right bit rate,
> > resolution..... but one has NTSC and the other does not.
> > What is this? When should NTSC/PAL/Other be used and when
> > should they not?
>
>
>