Vegas, Particle Illusion & Transparency

CraftyCre8tor wrote on 6/22/2007, 12:50 PM

I have a picture with my dog on a transparent background saved in Photoshop as a PNG. This dog picture will be on a layer over another picture in Vegas so it looks like my dog is part of the picture.

What I want to do is take this PNG into Particle Illusion and apply an effect to just my dog. I don’t want the effect to spill out onto my transparent background, I want it all contained within my dog.

I’ve come to realize that in order to do this accurately in Particle Illusion without using PIs blockers, I must make my dog black. When I do this, the PI effect works great and is contained within the dog once the PI layer transparency button is x’d out. But when the transparency button is x’d out, the transparent part becomes white and stays white when I import it back into Vegas as a TGA sequence.

I also tried exporting the PNG from Vegas as an AVI but that didn’t work either. I've tried every setting possible but none have worked.

What am I doing wrong? or is this something that can’t be done?

Comments

J_Mac wrote on 6/22/2007, 1:33 PM

Try renderind to uncompressed AVI. I have a vague memory that is what PI needs. John

CraftyCre8tor wrote on 6/22/2007, 1:37 PM

I did that but it didn't work.

TheHappyFriar wrote on 6/22/2007, 4:47 PM

not sure what you want here: do you want an FX that only appears but can leave the dog & not be seen or one that stays inside the dog & "bounces around"?

Second option is easy: use the blockers to trace your dog.

First one is easy to. Make a mask of your dog & use that on the FX. The the FX will only be in the area your dog fills & nowhere else.

CraftyCre8tor wrote on 6/23/2007, 12:14 PM

I would like the FX to stay inside the dog. I would mask it out in PI but the dog is too complicated for the program to add the blockers to accurately. Basically, I would like to see the FX bouncing around in the shape of my dog with a transparent background. I can do it with a white background, just not a transparent one.

Tech Diver wrote on 6/23/2007, 3:18 PM

Use PI and your black dog to keep the particles bouncing within the dog and render it. Then in Vegas, create a parent-child relationship with two tracks where the parent is your PNG black dog and the child is the rendered clip from PI. Apply a Luminosity filter from the FX tab to the dog and invert. This should let the "particulated" dog be seen, while everything around it is transparent. Mind you, I am writing this from memory and can't try it while my long project is rendering.

Peter

Soniclight wrote on 6/25/2007, 6:17 PM

CraftyCre8or,

I have PI-3 but have not attempted what you are wanting to pull off, though Peter's suggestion makes sense.

And/but If you haven't already done so, go ask the guys who run PI (i.e. Alan) at their user forum for it sounds like something to solve in PI and how it exports what you want.

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