NTSC and PAL

Jesse Bekas · September 24th, 2004, 10:37 PM

For the technically minded out there wondering about color space...

http://www.cs.sfu.ca/CourseCentral/3...3/Chap3.3.html

Victor Muh · January 11th, 2006, 08:19 AM

PAL is 25 fps.

Quote:

Originally Posted by Rob Lohman

To sum it up in a little table form:

PAL:
- resolution: 720 x 576 (DV)
- framerate: 30 fps / 50 fields per second

Glenn Chan · January 11th, 2006, 04:13 PM

Quote:

Y (luminance) is the CIE Y primary.

That statement in the website is incorrect.

see http://www.poynton.com/papers/YUV_an...e_harmful.html

Abstract

The notation YUV, and the term luminance, are widespread in digital video. However, digital video almost never uses Y'UV color difference components, and never directly represents the luminance of color science. The common terms are almost always wrong. This note explains why. I urge video engineers and computer graphics specialists to use the correct terms, almost always Y'CBCR and luma.

Rob Lohman · January 12th, 2006, 07:33 AM

Victor: of course it is. I must have typed that too fast. I edited my original
post to reflect the correct number of 25. Thanks for spotting that!

p.s. the fields number of 50 was correct

Laurence Kingston · January 12th, 2006, 07:47 AM

Before you run out and buy a PAL camera, be aware of some of the drawbacks. To go to DVD you need to deinterlace the footage and slow it down 4% so in essense you're shooting at 25p. 25p or 24p cannot handle the quick handheld jerkyness that most of us get when we grab a camera and start shooting. If you are not tripod, dolly tracking or steadycam shooting your footage it's going to look unsteady. Also, there is a lot of 60 hertz flickering in US lighting, especially when there is flourescent lighting. Many people are now using daylight temperature screw in flourescent lights in place of old fashioned power hungry bulbs. Shooting NTSC you'll never notice this because the 60i frame rate matches but shoot PAL and you'll see lights flickering everywhere. Shooting PAL makes a lot of sense if you're in a PAL country or if you're shooting a lit movie with compatible lighting and your final output is 100% going to be film, but I wouldn't do it otherwise unless I lived in a PAL area.

January 12th, 2006, 07:33 AM	#19
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	Victor: of course it is. I must have typed that too fast. I edited my original post to reflect the correct number of 25. Thanks for spotting that! p.s. the fields number of 50 was correct __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

September 24th, 2004, 10:37 PM	#16
Jesse Bekas Major Player Join Date: Mar 2004 Location: Ridgefield Park, New Jersey, USA Posts: 572	For the technically minded out there wondering about color space... http://www.cs.sfu.ca/CourseCentral/3...3/Chap3.3.html

January 12th, 2006, 07:47 AM	#20
Laurence Kingston Major Player Join Date: Aug 2004 Location: Clermont, FL. Posts: 941	Before you run out and buy a PAL camera, be aware of some of the drawbacks. To go to DVD you need to deinterlace the footage and slow it down 4% so in essense you're shooting at 25p. 25p or 24p cannot handle the quick handheld jerkyness that most of us get when we grab a camera and start shooting. If you are not tripod, dolly tracking or steadycam shooting your footage it's going to look unsteady. Also, there is a lot of 60 hertz flickering in US lighting, especially when there is flourescent lighting. Many people are now using daylight temperature screw in flourescent lights in place of old fashioned power hungry bulbs. Shooting NTSC you'll never notice this because the 60i frame rate matches but shoot PAL and you'll see lights flickering everywhere. Shooting PAL makes a lot of sense if you're in a PAL country or if you're shooting a lit movie with compatible lighting and your final output is 100% going to be film, but I wouldn't do it otherwise unless I lived in a PAL area.