Apr
9
Interlaced Versus Progressive
Filed Under HDTV
I touched on this a while back but wanted to expand a little as it’s something that’s going to remain relevant, as long as we have 1080i cable and satellite broadcasts (hint for a very long time to come). Interlaced video, sometimes called interlaced scan, creates images on-screen by filling every other row of scan lines with an image and then alternating to the other row in rapid succession.
This “interlacing” happens so fast that it appears seamless and for all intents and purposes it is, but there is of course another way to render video images on-screen. Progressive scan omits the alternating rows of video altogether and fills the entire screen with one big, smooth image often with no visible jaggedness whatsoever.
In the past, I was always quick to defend interlaced video and I still enjoy it but of course as time marches on and 1080p displays become more common I find myself caring less about progressive versus interlaced and more about the overall resolution.
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