-
Aspect Rasio question
I can’t figure this out.
I know that “frame size” is the hight and width of a single frame. I know that “frame rate” is the amount of frames that fly by per second when viewing a movie. I also know that aspect rasio is the relevence between hight and width… how much wider the picture is then tall.What I can’t figure out is when I see: widescreen (16:9) PAL. Now, PAL is still 720X576, so what happens when you make it 16:9? How does 576 vertical lines get spead out over a widescreen while I understand that in digital video, you don’t “see” more information (more pixels) like you would with film. I understand the pictures on widescreen that you sometimes see “squished” but sometimes you see widescreen very nicely. )of course with black bars on top and bottom).
Thank you.
-
4 Replies
-
“Pixel Aspect Ratio” (PAR) adds a degree of complexity to the subject. Seldom are pixels square on a TV. Widescreen mode in your camera creates pixels that are much wider than tall (1.422). Standard PAL pixels are are 1.067. The number of pixels dont change, just the PAR.
-
They don’t always like us to post links to off site resources, but since ArtBeats is a good advertiser here, I figured this might be a legal post. Besides, the article is by some of the smartest people I have ever met in the video/moion gaphics business.
https://www.artbeats.com/pub/articles/aspect_ratio_1.pdf
Steven
https://www.stevengotz.com -
Thanks guys!
So it’s just wierd that the footage that was shot says 1.0 (It was HD)
-
1080i HDV is shot with a PAR of 1.33 whereas 720p is shot with square pixels.
Top of the line HD is shot at 1920X1080 using square pixels.
Steven
https://www.stevengotz.com
Reply to this Discussion! Login or Sign Up