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What determines number of pixels?

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Jeff David
What determines number of pixels?
on Feb 15, 2015 at 6:44:35 pm

I saved a lot of picture off of the internet (they are all in the public domain) to my hard drive and imported them into my project.

I got to wondering how they would look on a wide screen so I burned a sample blu ray of a bunch of them and played them back.

Interesting in that some looked lousy and some looked great.

So I checked the properties and of course found out the lousy ones were low pixels.

Of course low pixels looking bad is not a surprise.

But what was interesting was how depending on the pictures I saved some had high pixel counts and some low.

What determines the pixel count when you save pictures off the internet or out of a book on the internet?

I saved them all the same way into Microsoft Picture Manager and it looks like it automatically sets them to jpg.

They are all listed as jpg in Microsoft Picture Manager. I don't think there is even an option when saving them to save them in different format.

I would think that if they are all jpg or all the same format, the pixel count should be the same for all?

However that is not the case as I looked at the pixel counts and they are all different depending on the picture.

Therefore am I correct to surmise that the pixel count is determined by the actual source picture?

Somewhat confusing why they would be different pixel counts.

So the ones that looked lousy when saved and then rendered, I started to just film them (Ok I know it's not film but I like that term anyways, makes me feel like I'm a big time movie studio head)
them w my camcorder right off of my computer screen, that way they are 1440 by 1080 I guess? I guess if you take footage w a camcorder the quality is whatever the camcorder is set to and not determined by the source picture.

It's kind of interesting if you think about it.

I.e. number or pixels/quality is determined by the camcorder settings not the source picture being filmed?

I guess it will look as good as the picture on the page looks but not worse as some do when I saved them to my hard drive.

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Jeff David
Re: What determines number of pixels?
on Feb 15, 2015 at 10:16:28 pm

I was reading an article it appears that when someone puts a picture on their website, there is a picture resolution on the picture and if someone saves it to their hard drive, apparently the picture resolution carries over.

I think that I have that correct.

I was surprised to find that out.

Lenovo quad core i7 16gb of ram, Windows 8.1

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