deinterlacing video footage

[Itamar Kool]

To clarify: I don’t mean to turn off fields in the interpret footage window and I also don’t mean rendering in full frames. I mean real deinterlacing

Kool En De Anderen
dual 1.8 gig G5/Mac OS 10.4.6/Kona 2/Hugh 800 G diskarray, fibrechannel/FCP 5.02/AE 7 Pro
http://www.koolendeanderen.nl

[Mike Clasby]

Here’s one way:

Andrew Kramer’s Deinterlace in After Effects

https://forums.creativecow.net/cgi-bin/new_page_wrapper.cgi?forumid=2&page=https://www.creativecow.net/articles/kramer_andrew/deinterlace/index.html

[Barend Onneweer]

Maybe you need to clarify:

What are you trying to achieve that can’t be achieved by enabling ‘separate fields’ in the footage intepretation window, and rendering without fields?

The result is de-interlaced video.

There are more advanced ways to de-interlace, most notably Magic Bullet and Re:VisionFX’s FieldsKit (great value), but AE’s built-in field separation does a good job and is by far the least cumbersome solution.

But if you can explain why the built-in solution doesn’t work for you, we’d be able to supply more specific feedback.

Bar3nd

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[Itamar Kool]

Thanks, interesting technique

Kool En De Anderen
dual 1.8 gig G5/Mac OS 10.4.6/Kona 2/Hugh 800 G diskarray, fibrechannel/FCP 5.02/AE 7 Pro
http://www.koolendeanderen.nl

[Itamar Kool]

Well the problem was that I did a project with lots of video footage from all sorts of sources, some with upper field first and some with lower field first. I had to combine all this footage in a composition. The file I made was incorporated in a sort of database project with all sorts of films that were projected on a large computer screen. As a computerscreen is always progressive, the facility that processed my film, wanted it full frame. What happened though, was that (as far as I understood), it became sort of messy, because both fields were still visible and the film was stuttery sometimes and not sharp on the computerscreen.
I finally ended up using the Boris Cintinuum deinterlacing filter for all the video footage. And that worked. But at the facility they wondered whether I could deinterlace the footage at the moment that I import it into After Effects. I just saw that Shake has got that possibility and since lots of films will be projected on progressive screens in the future I think it would be a useful feature.

Kool En De Anderen
dual 1.8 gig G5/Mac OS 10.4.6/Kona 2/Hugh 800 G diskarray, fibrechannel/FCP 5.02/AE 7 Pro
http://www.koolendeanderen.nl

[Barend Onneweer]

Hi Itamar,

Separating fields in AE, and rendering without fields should do exactly what you need – so something must have gone wrong in the project you describe.

If you export without fields, separating fields results in de-interlacing. The method in Andrew Kramers tutorial works, but causes more loss of vertical resolution than necessary.

Bar3nd

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[Itamar Kool]

Hi Barend, At the facility (Zwart Audiovisual in Lieveren), they said that when you render full frame, it does render full frame but that the difference in fields is still visible within the frame. The compostiion I made had three windows that contained the video footage. When I redid the project I turned of fields in the interpretation footage window and when I applied the BCC deinterlacing filter I did notice a change in the picture. So rendering full frame would not mean the same as deinterlacing footage in that theory, as far as I understood.

Kool En De Anderen
dual 1.8 gig G5/Mac OS 10.4.6/Kona 2/Hugh 800 G diskarray, fibrechannel/FCP 5.02/AE 7 Pro
http://www.koolendeanderen.nl

[Barend Onneweer]

Hmmm…

I’d love to see a couple of frames of that footage…

Of course different de-interlacing techniques result in slightly different image. Magic Bullet produces subtly different results from FieldsKit and it will be the same for BCC Deinterlacer.

But AE’s own de-interlacing has worked with me for years and years and years…

So I’d love to see a couple of frames of the end-result of the project you’re talking about.

Bar3nd

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[Itamar Kool]

I threw the old files away. But you’re making me wonder what went wrong before. I’m going to talk to the facility again

Kool En De Anderen
dual 1.8 gig G5/Mac OS 10.4.6/Kona 2/Hugh 800 G diskarray, fibrechannel/FCP 5.02/AE 7 Pro
http://www.koolendeanderen.nl