How would I do this? (Masks)

kentwolf wrote on 10/28/2003, 4:03 PM
I'm sure this is pretty simple, but the methodlogy is escaping me...

I have a video clip.

I want the final clip to appear solid black, until large, masked (used green chroma key, green letters) scroll from right to left across the screen showing the video through the letters, then still show solid back after the letters have scrolled off screen.

I have the letter mask no problem, but I can't think of a way to make the background solid color but up against the crop/pan letter movement.

Perhaps there's a better way to do the letter mask?

I've just started doing things like this, so I'm pretty new at these kind of unusual effects. Just straight forward stuff until now.

Thanks for any help you can offer.

Comments

jetdv wrote on 10/28/2003, 4:12 PM
What if you use the Position tab in the text editor instead of Pan/Crop to move the letters?
kentwolf wrote on 10/28/2003, 4:26 PM
>>...What if you use...

You got it.

That's what I needed.

Thank you very much!

Do you know is there's a better way to do the letter mask other than chroma key, or is that the best way?

Thank you very much again!
Chienworks wrote on 10/28/2003, 6:06 PM
I wouldn't use Chromakey at all. I would put the text on track 1 as solid white and the video clip on track 2, then composite the two together so that track 1 is a mask for track 2. Use the default compositing mode and wherever track 1 is white you'll see the video clip and wherever it's black you'll see whatever is below track 2, which will be black if you don't have anything else on lower tracks.
kentwolf wrote on 10/28/2003, 10:20 PM
Super!

That's what I was looking for.

Thank you very much for your help!

(I'm still learning about compositing mode via DSE's DVD set, but I havn't gotten that far yet...)