Multiply mode problem with cropped layer

Anonymous (not verified)

OK - my intention would seem very easy to achieve, but I have completely failed to manage it!

Basically, I have a rotated video placed in timeline, which I simply want to overlay like a sheet of acetate, on top of the rest of the video. You can see it dropped in timeline here, with pan/crop shown.

http://www.djh-graphics.com/vid-screen.jpg

Problem is, When I change the layer to "Multiply", I get exactly the effect I want BUT it has black all around everywhere but the video. What I really want to do is something akin to Photoshop's "fill behind". I've tried putting a white layer underneat, experimenting with parent/child and so on, but got nowhere.

http://www.djh-graphics.com/vid-screen2.jpg

Any ideas? I have achieved exactly this in a layer beneath (you can see it in first screenshot) but this was not a problem because the footage completely filled the frame.

Thanks for looking at this!

Dan


Cville's picture
Last seen: 3 years 2 months ago
Joined: 03/28/2009 - 7:58pm

Dan

I think this should be doable. But I'm not sure exactly how with out doing some experimenting and I won't have time to look at it today but maybe someone will have an answer.

One thing you could try is masking the video. I've only messed with it once several months ago but I think sony has some tutorials on their website to do it. I remember that when I applied the mask the rest of the frame went Alpha so what ever was below showed thru.

Good luck

 

 

We don’t make movies to make money, we make money to make more movies.
- Walt Disney
 

www.ynotvideo.us



birdcat's picture
Last seen: 5 years 2 months ago
Joined: 10/21/2005 - 10:09am

@Dan - If my failing memor serves me, Multiply works with a mask, meaning that where the mask is black nothing will show but where it has a luminance value (not black) it will.

Spot has some good articles about compositing modes here:

http://www.sundancemediagroup.com/articles/parenting_power.htm

http://www.sundancemediagroup.com/articles/vegas_movie_studio_platinum/masking_in_Sony_vegas_movie_studio_platinum.htm

http://www.sundancemediagroup.com/articles/masking_text_objects_in_Sony_Vegas.htm

Bruce Paul 7Squared Productions http://www.7squared.com



birdcat's picture
Last seen: 5 years 2 months ago
Joined: 10/21/2005 - 10:09am

it may sound too simple but try putting the bkgr clip on track 2 and the overlay on trak 1 and adjusstttttttt the opacity on track 1 until you get the desired result

Bruce Paul 7Squared Productions http://www.7squared.com


Cville's picture
Last seen: 3 years 2 months ago
Joined: 03/28/2009 - 7:58pm

If i understand this correctly I think this is what will work according to my tests this morning.

On the first JPG file you posted you showed the video rotated in the event pan crop. Start there and put that piece on the top track.

With the event pan crop window opened see the mask check box at the bottom left? Check it and that will select the mask tool a set of mask tools will appear on the left side. One of the tools is the Anchor creation tool Use it to draw a box around the 16 x 9 frame of the video you see on the screen.

Once that mask has been created you then go back to the time line and the video track control on the left side and right click and select duplicate track. The duplicated track will appear below the original. On the track control of the duplicated track select the little arrow toward the right side of the track control tool that will say Make Compositing Child. Once that is done go back to the main track and set the compositing mode to multiply I Think this is what you are trying to do. That gets rid of the black bars for me and lets the video below show thru.

Hope this helps

 

 

We don’t make movies to make money, we make money to make more movies.
- Walt Disney
 

www.ynotvideo.us


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Anonymous (not verified)

Try to choose Screen instead of multiply...