Compositing with particles

[triskelion]

Hello,
My name is Dinos and i am a newbie in 2d compositing with Combustion v4.I have a 2d Composite with 8 Layers and i want to add a particle operator to all of them.Nomatter what i have tried when i put the Particle operator on top of all the other Layers instead of seeing the composite i see a white screen.When i turn off the particles operator i see the Composite but when i turn it on i see the white screen and i can't see anything else.What's going wrong?What should i do?
Thanx in advance for your time.

[marcosissler]

You may want to make sure that when you start your particle workspace it's set to transparent.

Also make sure that Particle Controls | Preserve ALpha is OFF!

You may find that it's better NOT to pipe your footage through the particle operator - just make it the top layer of your comp.

Good luck!

Kim

[daek]

I have the exact same problem...

Any attempt to add a particle layer makes my viewport turn white...

I'm trying to put a particle layer over HDV footage....No luck...

I've tryed turning off software Open GL rendering... I tried creating a new partical layer with a transparent background...all the same...

One thing that was kind of wierd....

I imported a .png file from one of the tutorials with a spaceship in it...I was able to apply a particle to it...

But if I tried to create a particle layer without that file there...it did not work....

I'm Baffled...

[daek]

OK...I'm replying to my own post...

It seems to have something to do with my screen size...

I was trying to put particles over HDV footage 1280X720 footage...

Combustion seems to hate this....

I reduced my screen size to DV 720 X 480.... and it works....Um....OK

So now what to I do with HDV footage? Punt?