Masking

[heinz-oz]

I think I'm getting old I have done similar things in the past but completely forgot how. Alzheimers

I have created a mask in PI and it works great. Its the shape of the Australian continent and my image shows through inside the mask.

Now, here comes my problem (maybe medical )

I want to use this effect for a video I'm working on in MSP 7.3. The clips are all standard PAL DV-AVI captured from my Pana GS400.

I put the image of my mask onto the overlay track and try to get the video just to show through the centre. I have used tga & tiff format in full color RGB as well as 8 bit greyscale and hit a brick wall. Either the whole thing is transparent or nothing. I cannot, for the life of me, find a way to tell the stupid thing which of the two colors, B&W image, is to be transparent. It won't let me.

Can anyone here help or do I need to get some medication?

The effect in PI


The mask

[Gorf]

Assuming the mask is greyscale or RGB, use "gray key" as the basis for your overlay. If the wrong part of the image is transparent, check the "invert" box in the middle of the overlay screen.

If you're using an image with an alpha channel, it should be correctly set up as soon as you enter "overlay options".

You might need to apply the same mask twice, first to your continent video of the koala (or whatever) and then again on the "sea" background with "invert" checked.

HTH

[sjj1805]

OK my example is a circle but the procedure is the same.

MSP8/VS9/PI11: Creating a circular PIP with clock transition

[heinz-oz]

Thanks Steve, exactly as I thought I did this but, I guess I didn't. maybe I didn't see the forest for the trees anymore that night

All is well now.
Thanks