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How would you do a loopable background? [ANSWER]

Posted: Fri, 21st Mar 2008, 12:52am

Post 1 of 5

StuntMusic

Force: 1600 | Joined: 6th Feb 2008 | Posts: 14

CompositeLab Pro User PhotoKey 4 Pro User

Gold Member

I want to take some sort of loopable backgroud, like a particle or energy background.

On top of that backgroud, I want to float a number of 16:9 rectangles over that looping background. On those rectangles, I want to drop video into those rectangles so the video floats across th background.

Easy? Hard? Pretend I know nothing (well, I *do* know nothing).

I figure I need to create the loop that has the boxes floating across the screen first, something that lasts a minute or so and can loop easily

Then take the video and scale it, place it, then use keyframes to create a tween from start point to end point. Do that multiple times and change the videos as the loop continues.

Sound logical? Am I missing something?

I am using:

Sony Vegas Studio Platinum
CompositeLab Pro

Thanks for any advice
Posted: Fri, 21st Mar 2008, 5:10am

Post 2 of 5

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

I don't think you have missed anything; that should work. Is the purpose of the boxes to create a frame round the floating videos?

If you animate the rectangles by moving the center point, then you should be able to easily copy and paste that center point info from each box to the video that goes on top of it. That way you don't have to manually match the video to the rectangle underneath.
Posted: Fri, 21st Mar 2008, 11:00am

Post 3 of 5

StuntMusic

Force: 1600 | Joined: 6th Feb 2008 | Posts: 14

CompositeLab Pro User PhotoKey 4 Pro User

Gold Member

Axeman,

Yes, the boxes underneath are meant to be "frames" for the videos.

I figured out how to take the backgroud, put the video in and tween it last night, as well as scale it and zoom in and out so the video floats by, zooms in to full screen, then zoom back.

So now I just need to create the frame, render the frame and video in Vegas, then motion tween it in CLP.

So here is another question...

How would I change perspective? Say I wanted to take video and show something on a billboard you see in a video as a car drives by it?

Or on any object for that matter? Do I take the image and have to create an alpha channel to make the knockout? I'd have to skew the video so it looks correct proportionately.

Say to put video into this image?

http://www.istockphoto.com/file_closeup/object/5133130_empty_advertisement_boards_in_nyc.php?id=5133130

Thanks again!
Posted: Fri, 21st Mar 2008, 1:14pm

Post 4 of 5

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

In CompositeLab, you can easily adjust the position of each corner of the video, to match the perspective to whatever you want.
Posted: Tue, 25th Mar 2008, 9:27am

Post 5 of 5

Cogz

Force: 16050 | Joined: 18th Jun 2002 | Posts: 674

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User FXpreset Maker Windows User MacOS User

FXhome Team Member

You can actually change the warping type to perspective if you do the following:

1. Add your clip to the timeline.
2. Click on the clip now situated on the timeline, you will notice the toolbox now displays the objects attributes.
3. The last element in the list shows the Warp type, change this from bilinear to perspective.

I believe this will get the necessary result you are after. When you move the handles of the quad the frame will look like its going back into the frame.