[strongmediacorp]

For me, the words "interlaced video" means genuinely interlaced material (shot on a video camera which takes 29.97 frames per second, 59.94 fields for NTSC, 25 frames per second, 50 fields for PAL), and not "artifically interlaced", i.e. telecined.

Why do we deinterlace? MPEG2 supports interlaced contents fine, and if you uncheck the "Progressive" checkbox in CCE the players will treat it as interlaced content. All the titles i have encoded that were deinterlaced has come out fine...

Never deinterlace interlaced material unless you resize it below 576 (PAL) or 480 (NTSC) vertical lines of resolution, use a format that doesn't support interlace, and aim to view it *only* on the computer monitor.

Deinterlacing may save bits and there'll in some cases be less blocking. But it also totally ruins motion, if you ask me. Plus, you'll get ghosting and other unsightly effects from the deinterlacing and I find that much more offensive to the eye than a little blocking every now and then.


Deinterlacing interlaced material is wrong. Because degrading the quality of the material, to me, is wrong.



Interlace is a technique of improving the picture quality of a video signal without consuming any extra bandwidth. It was invented by RCA engineer Randall C. Ballard in 1932.[1][2] It was ubiquitous in television until the 1970s, when the needs of computer monitors resulted in the reintroduction of progressive scan. Interlace is still used for most standard definition TVs, and the 1080i HDTV broadcast standard, but not for LCD, micromirror (DLP), or plasma displays; these displays do not use a raster scan to create an image, and so cannot benefit from interlacing: in practice, they have to be driven with a progressive scan signal.