Thread: 3: Phenomenon
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Old 12-03-2007, 09:32 PM   #83 (permalink)
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Join Date: Sep 2007
Posts: 1
Originally Posted by McNally View Post
You know how they say talent can learn tech, but tech can't learn talent? I'm starting to think that the talentless techies aren't so bad off, because learning tech is a bitch. There are so many details about video that I only half understand that my head might explode from the pressure.

So fuck you for pointing that out and welcome to the forums.
Most Non-Linear editors will have some sort of "de-interlace" option in their export settings.

Basically, your computer monitor shows an entire frame of video at once. So 30 full frames are displayed by your monitor every second. This is called progressive scan. Pretty simple, right?

TVs display a bit differently. Each frame is broken into two subframes, or fields, that are 1/2 the resolution of a frame. A TV screen first draws the even field (all the even scanlines on the TV) and then the odd field. So it shows video at 30 frames per second = 60 fields per second. This method of display is called interlacing.

If an object is moving rapidly across the screen, it won't be at the same position in an even field as it was in the odd field. This creates problems when you try to watch video originally for television on a computer. The computer tries to show both fields at once, which looks fucked up because you're looking at an object that's in two places at one time.

So a de-interlacer's entire job is to somehow blend the two fields so that they look like one nice frame when viewed in progressive scan. There are various methods for doing this, and hopefully whatever you're editing on has got a good deinterlacer.

Two good explanations of this can be found below: (and more specifically, ).

I'm sure that Matt of NYU fame knows more than me, but that's a good place to start!

Last edited by themire; 01-23-2010 at 12:09 PM.
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