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SeeMoreDigital · 2nd September 2003, 19:12

There's are many 'trade off' decisions you may have to make when capturing.

Capturing 4:3 images is not so bad. But things can get a little awkward when trying to capture 16:9 images.

As you know, an NTSC 1.77:1 (16:9) image viewed on a 16:9 TV, actually starts it's life as an 1.50:1 image. So in order for the image to perfectly fit a 16:9 TV it has to be (horizonally) anamorphicly stretched, by around 20%.

PAL 1.77:1 (16:9) images start their life as just an 1.25:1 image. So in order for this image to perfectly fit a 16:9 TV it has to be (horizonally) anamorphicly stretched, by over 40%!

So as you can see the PAL image has to be stretched twice as much as the NTSC image!

Never the less, some people may find it interesting to conduct their own 'horizontal pixel' stretch tests. Just to see how far they can put up with a streched pixel before they can't take it anymore!

352 pixels is about enough for me!

Cheers

2nd September 2003, 19:12	#10 \| Link
SeeMoreDigital Life's clearer in 4K UHD Join Date: Jun 2003 Location: Notts, UK Posts: 12,227	There's are many 'trade off' decisions you may have to make when capturing. Capturing 4:3 images is not so bad. But things can get a little awkward when trying to capture 16:9 images. As you know, an NTSC 1.77:1 (16:9) image viewed on a 16:9 TV, actually starts it's life as an 1.50:1 image. So in order for the image to perfectly fit a 16:9 TV it has to be (horizonally) anamorphicly stretched, by around 20%. PAL 1.77:1 (16:9) images start their life as just an 1.25:1 image. So in order for this image to perfectly fit a 16:9 TV it has to be (horizonally) anamorphicly stretched, by over 40%! So as you can see the PAL image has to be stretched twice as much as the NTSC image! Never the less, some people may find it interesting to conduct their own 'horizontal pixel' stretch tests. Just to see how far they can put up with a streched pixel before they can't take it anymore! 352 pixels is about enough for me! Cheers __________________ \| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 \| My Network Layout & A/V Gear \| Last edited by SeeMoreDigital; 2nd September 2003 at 19:14.