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View Full Version : Add interlacing?


yidaki
7th March 2005, 13:43
Haha, here's a stupid but interesting question.
Is there any way to add interlacing to a video?
I highly doubt there's any way to take a deinterlaced video and reverse-engineer it, but perhaps you can do it like an effect?

The use would be highly limited I guess, like CG animations and stuff, where it is supposed to look like it is "unweaved", a raw material so to speak. But it's just that deinterlacing is so tough, and there's like a billion ways of doing it, that the thought of interlacing something sounds crazy to me :)

Inc
7th March 2005, 14:14
When deinterlacing an interlaced (not converted from NTSC to PAL) source mostly a blended or interpolated stream will be the result, so an inverse-Deinterlacing is (just imho) not posible to force a result similair to the quality state before deinterlacing.

scharfis_brain
7th March 2005, 14:44
if you have a 50fps or 60fps PROGRESSIVE Video, you can easily re-interlace it:

assumetff()
separatefields()
lelectevery(4,0,3)
weave()

trevlac
7th March 2005, 21:05
Ya know ... it depends upon your goal and source.

For example ... the Telecine process does this all the time. "3:2 Pulldown" turn 24fps progressive film into 29.97fps NTSC video.

http://en.wikipedia.org/wiki/Telecine

yidaki
14th March 2005, 17:07
I want it to show.
If I play real interlaced material on my TV, like a DVD, then it doesn't show at all.
And I guess something similar would happen if I connect the DVD to a projector.
So I think I'm after an effect, more then the actual separation of fields, or something. :)

scharfis_brain
14th March 2005, 17:16
then simply resize interlaced contents without bothering about fields...