Gaussian and Gaussian (Pyramid). Very different!

Grazie wrote on 8/20/2008, 4:03 AM

I just tried this - once again. I've got a piece, where I am zooming in on graphic, consisting of multiple hexagons.

Gaussian is good, but Gaussian (Pyramid) produces a most excellent, beautifully soft motion trail. Now seeing it, it just what I wanted. Try it out yourselves.

OK, here's the question: Why shouldn't I be able to select these great variables from within the Vegas Timeline and the Gaussian Blur Fx, rather than ONLY being able to set this within the Project Properties menu?

Grazie

Comments

farss wrote on 8/20/2008, 5:05 AM

I've been playing with that for years. Great stuff. I've also been searching for the holy grail, real optical gaussian blur. So far the only application I've found that does that is Twixtor. All the others do it the same way Vegas does is by stacking frames which is oftenly close enough but not the same as the real deal.

I doubt any of us know the real answer to your questions. Best stab I can make at it is probably for the same reason that temporal plug ins like motion stabilisation don't work quite right in Vegas. The plugins can only access the current frame, they can't request or store frames from before or after the frame they're processing. For this reason the GB paramaters are specified at the project level and the FX can only be used on the bus master. In other words the GB plug is a unique plug in.

There's probably another issue with this kind of plugin. It's the video equivalent of reverb in a way. Now if you could apply it to an event what happens at the end of the event if you're using Pyramid, the last few frames of the event could blur into black or should they blur into the first frames of the next event. Neither is what you'd likely want, you want it to blur into frames that could be after the cut for the event that the FX is applied to.

Bob.

P.S. Don't we mean Motion Blur?

Grazie wrote on 8/20/2008, 5:34 AM

I'm applying GB(Pyra) Project Propereties to an already MB-ed region Veggie.

Grazie

farss wrote on 8/20/2008, 5:49 AM

I'm confussed.

The project properties settings are for Motion Blur and include a number of types, one of which is Gaussian. That's not a blur, that how the frame composition levels are determined over time.
Pyramid means a linear curve. If it's symetric then like a sawtooth i.e. frames before and after the current one. Asymetric is like a ramp i.e. only frames after the current frame.

Bob.