compositing question

[Danny Hays]

If there’s no black in the forground clip, use the chromakey effect and key out the black. Hope this helps. Danny Hays

[Adam Rose esq.]

could try the masks in compositing mode:

– B&W image on top track, and mask composite mode

– fill video on 2nd track, made to be child

– background video on 3rd track

look here for demo (using text): https://www.upload2world.com/pic98/upload2world_b5773.png

[John Rofrano]

It sounds like what you might be doing wrong is not using the Sony Mask Generator on the mask track. Your tracks should be laid out top to bottom as: Mask track (top), background A (middle), background B (bottom).

Then follow these steps:

1. Change the Compositing Mode of the Mask track to Multiply (Mask). This will make background A show through the white part of the mask.
2. Add a Sony Mask Generator as an FX on the Mask track and make sure it’s set to Luminance (the default)
3. Press the Make Compositing Child button on the background A track to make it a child of the Mask track.

Background track B should now show through where there is black on the mask track. Most people forget about adding the Mask Generator. This is the crucial step.

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Larry Brewer]

Thanks to everyone for helping me thru this. The solution was, as always, simple and it’s in the book. I now have a much better understanding of Vegas 8.

[Bryan Cannon]

I found this interesting (and useful), although I personally have had some success with masking and completely forgot the “mask generator” existed. Which leads to a couple of basic masking questions:

1) How is “transparency” treated (vs. black) on the mask track? Since I tend to use white/transparent masks, is that how I’m getting away with no mask generator?

2) If a mask has a child track, its effects apply only to that child track. I noticed that if a mask does NOT have a child track, its effects are applied to all lower tracks (they all seem to become default “children”). Is there a way to turn off that behavior?

Thanks,
Bryan

[Douglas Spotted eagle]

Add a new parent track above the parent/child relationship in that particular scenario.

Douglas Spotted Eagle
VASST

Certified Sony Vegas Trainer
Aerial Camera/Instructor