videobear
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Sep 17, 2005, 7:36 PM
Post #14 of 17
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Re: [SuePren] What is correct image size for video?
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It IS confusing, Sue...especially because Photoshop now has a translator function for nonsquare pixels, and so do several editing applications.
But, assuming that you're not using any of that automatic wonderstuff, and are doing it manually,
- when you create your 720x534 graphic by scanning a photo, or whatever, those pixels are square.
- the image appears correct on the computer screen.
- When we're ready to export for video, we re-size the image to 720x480 pixels. They're still square at this point, so our image now looks kind of squashed and fat.
- Now we import into our editor, and look at that 720x480 image on a television. The pixels are rectangular, a bit taller than they are wide, so the image has now been un-squashed and looks just like it did at 720x534 on the computer monitor.
You should create a couple of graphics to use as test images, to make sure your settings are right. Make a big circle on a contrasting background. Make one of these at 720x534. Make a copy of that, but then resize it to 720x480, so you have a squashed circle. You can do it from the other direction, too...use your camcorder to grab a video image of a circle.
Now you can use these as test images when you are setting up to do some importing or exporting. Try various combinations of your paint program's and your editor's pixel aspect ratio compensation functions. The goal is to get the circle looking like a circle on both the TV and in your paint program. If it's squashed one way or the other, a setting is wrong somewhere.
Regards,
Doug Graham
Panda Productions
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Re: [videobear] What is correct image size for video?
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