Interlacing problems in Digital Output

[Danny Princz]

you need to deinterlace your footage.
many times this is done in the compressing stage

who is that masked man…
https://www.exposedideas.com/

[Theautomator]

[rendernyc] “you need to deinterlace your footage.
many times this is done in the compressing stage”

Thank you for your reply.

From my above post, I guess you can say I’ve been trying to deinterlace my footage, but without much success.

So how do we go about deInterlacing the footage properly?

You say it is done in the compressing stage. Do you mean when you capture from the source? Or is this after effects work?

If you can provide steps, methods, programs, etc… that would be most helpful. Thanks a lot.

[Danny Princz]

you mention that you are delivering quicktimes for the web.

how are you prepping those files for web delivery?
are you rendering your out of after effects to a compressed format or using compressor, squeeze, etc?

who is that masked man…
https://www.exposedideas.com/

[Theautomator]

[rendernyc] “you mention that you are delivering quicktimes for the web.

how are you prepping those files for web delivery?
are you rendering your out of after effects to a compressed format or using compressor, squeeze, etc?”

Often we are asked to do After Effects work that requires the use of footage. (keying, graphics treatment, etc…) In one case, we were asked to deliver a quicktime of a keyed footage with an alpha embedded for our clients. But of course we have the problem of interlacing, footage interpretation, etc.

But regardless of what kind of work we are doing to the footage, I’m just going to use a simple scenario for example.

IN – Clean footage from a digitalbeta source
Standard 720×486, 29.97, NTSC footage

OUTput – Clean footage in a Movie File (Quicktime)
I want to deliver final clean footage in quicktimes without those jagged edges from interpretations. And without those interlaced lines you see in non-inpretted footage

Rendering out in After Effects, if possible.

I wonder if there is another step that I’m not awared of? A step you must take after rendering out in After Effects?

I hope I didn’t make things too confusing

Thanks!

[Frank Ruggiero]

I would interpret the fields seperated (probably lower field first) in the interpret box, and then render it out without any fields.

But if your quicktime file is ultimately going to end up being broadcast off of NTSC, I would be tempted to render with fields. If it is just going to be on a computer monitor, then don’t render with fields.

See if the image looks better….

-Frank R.

[Theautomator]

[Frank Ruggiero] “I would interpret the fields seperated (probably lower field first) in the interpret box, and then render it out without any fields.”

The thing that happens with this combination is that you would see jagged edges around the subject in the final output.

If we don’t interpret the fields and then render out. You have nice footage and clean edges, but you have interlacing problems. I’ve tried many different combinations of interpretations and field renderings, but with no success.

There must be someway to get rid of the interlacing without making those edges all jagged.

Thanks anyways!

[Luc Bourgeois]

I had the same problem you have, I bought a plug in called fieldskit here is the web site https://www.revisionfx.com/products/fieldskit/ and it does what it’s suppose to do, turns interlaced footage into what I call “pseudo progressive”,works great.

Hope this helps
Luc

Luc Bourgeois
Cygnus Video Productions
LV, NV
702-432-4431
cygnusvp@cox.net