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Wiggler Blurs Footage?

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Jared PeaceWiggler Blurs Footage?
by on Mar 26, 2010 at 1:50:46 am

Hola Creative COW.

Looks to me like the Wiggler in After Effects also adds a slight blur to a shot, at least when working with interlaced footage. Is this correct? Is this avoidable?

Thank ye.



Jared
http://www.jaredpeace.com


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scott novasicRe: Wiggler Blurs Footage?
by on Mar 26, 2010 at 3:53:01 am

first I would separate the fields. Interlaced footage can be tricky. Is there a natural motion blur to the footage to begin with? and stating the obvious, check that the Motion Blur setting is off.

SuperNova
Animation & Visual Effects
Scott Novasic
Los Angeles Ca
web:http://web.mac.com/finaleffects


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Jared PeaceRe: Wiggler Blurs Footage?
by on Mar 26, 2010 at 4:10:33 am

Thanks for the response.

Motion blur is off. Fields are properly interpreted and I've also tried running the Wiggler effect on a 59.94fps comp with fields fully separated. No change. The shot itself is static so the blur is definitely being added by Wiggler. Also the footage is uncompressed 8-bit, so this isn't a problem of recompression.

It really just appears to me that the Wiggler effect adds a slight amount of blur as part of its functioning. It's fairly subtle so it could be that most people just accept it/don't notice it, but it is there.

Thinking about how fields are processed, I actually can't imagine how horizontal position could be adjusted by any program or effect WITHOUT creating blur. Magic, maybe. I was kind of hoping someone on the COW could send some magic my way.



Jared
http://www.jaredpeace.com


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scott novasicRe: Wiggler Blurs Footage?
by on Mar 26, 2010 at 4:00:26 pm

well, Jared. You know your stuff. That tells me, without seeing a frame of it that you are right, that simply distorting an image over a number of pixels. Say taking a 3 pixel wide sharp line and distorting it
to 3 or 4 times inevitably will lead to same 'softening\blurring' of an image. My thought is that if you want it as 'focused' as as possible try a 'median' filter or any number of more robust sharpen filters to help the image a bit.

Good luck.

SuperNova
Animation & Visual Effects
Scott Novasic
Los Angeles Ca
web:http://web.mac.com/finaleffects


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