PAL 720 x 576 Are these pixels?

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Screwball
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PAL 720 x 576 Are these pixels?

Post by Screwball »

After some reading here about others problems, I discovered that instead of using scanned pics 'as-is', it was recommended that they should be re-sized to 720 x 576, but, when I did this in Paint shop pro, when viewed in 1-1 (full size, it appeared to only occupy half of my monitor not all? Surely when this is shown on tv screen it will be very pixelated. Or am I misunderstanding something - does the 720 not mean pixels?
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daniel
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Post by daniel »

Yes 720 x 576 is the standard PAL TV definition.
And yes it is smaller than the usual 1024 or 1280 of a computer monitor.
And no since the TV points are wide and blurry it will not appear pixellated.

To further dismay you, you don't even see the 720 points due to overscan zone. At best you'll see about 700, typically 650-680.


But fear not, high definition TV is coming.
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Screwball
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Post by Screwball »

Thankyou for your infomative. There is so much to know.
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Trevor Andrew

Post by Trevor Andrew »

Hi

Whatever size image you insert to video studio the image will be adjusted by VS to occupy the frame.
Unless the size is exact.
As you are in England (Pal) this is 720 x 576. (just to complicate things 720 x 576 is not 4:3)

If the image is greater than 768 x 576 VS will reduce it to fit.
If the image is smaller than 768 x 576 VS will increase the size to fit, but the image will be poor.

If the image is not 4:3 the longest edge will fit to screen with the shortest having a black border.

To avoid VS having to resize the image I find it best to use 786 x 576, this size is 4 x 3 (use a calculator to check the ratio)

A digital camera may take a 4:3 image 1600 x 1200. this will fit the frame exactly with VS reducing the size to 768 x 576.

From my experience using larger images than 768 x 576 does not improve the quality but does increase the render times.

Try it for yourself, make two images one 720 x 576 and one 768 x 576.
Insert them to the timeline to see the difference.
Check the re-sampling option, keep aspect ratio/fit to project.

I always use 768 x 576 for all my 4:3 projects.
1024 x 576 for 16:9 widescreen.

Trevor
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