to Dave LaRonde..... Re: blur lines plugin
by romy marx
on
May 8, 2008 at 10:30:16 pm
Do you mean those famous blurry lines that zip after speeding cars in cartoons? Or do you mean those famous blurry lines formed by cars moving so fast on camera that they become a blur?
Re: to Dave LaRonde..... blur lines plugin by Dave LaRonde on May 8, 2008 at 10:45:47 pm
Too bad, that's a lot tougher.
I presume you're working with footage of actual cars, and not animated cars.
I'd start by working in 3D. Get the focal length of the AE camera to match the focal length of the camera used to get the shot... not an especially easy task, if you don't know the other camera's focal length.
Then create a few long solids -- perhaps 360x4 -- and make them 3D layers -- these will be the lines. Arrange them in 3D space so that they look like they're behind the car. It will take some doing. Designating one solid as the parent layer, and parent the other solids to this one. Now you only have to animate one layer.
Animate this one layer to follow the path of the car. To make the illusion convincing, you can do some rotoscope work on a duplicate car footage layer to leave foreground objects. In the scene.
Enable motion blur for the comp, turn motion blur on for the line layers, and see what you've got!
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
Re: to Dave LaRonde..... blur lines plugin by Dave LaRonde on May 9, 2008 at 3:46:38 pm
I just thought of a couple of other ways to do it.
If you're lucky enough to have Zaxwerk's 3D Warps, you could create a solid that follows the path of the car. Then, substitute a precomp with lines in it, and animate the lines. You could even do a few 3D Warps layer like that. Both this method and the one I described earlier will result in 2D lines: they'll look like very thin strips of paper.
Or you might be able to use Trapcode's 3D stroke for the lines. It will result in actual 3D-looking lines, but it might be trickier to pull off.
And of course, if there are any objects in the foreground of this shot that would block these lines in the real world, you'll have to rotoscope them in.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
