OT - Heat waves by filter in video??

vicmilt wrote on 3/24/2010, 8:19 PM

Does anyone have a suggestion to introduce "heat waves" into a scene, by filter or other artifice?

I was shooting at a race track last weekend and using my "focus magnifier" was able to see (but not shoot) incredible heat waves rising off the track. I wanted them, but it would have taken a 2,000mm lens (which I don't just happen to have in my kit).

so can anyone suggest a filter to duplicate this effect?

v

Comments

richard-courtney wrote on 3/24/2010, 9:42 PM

First download chienworks water ripple veg file at:
http://www.vegasusers.com/testbench/files/chienworks-circular-ripples.zip

This is an exaggeration of the distortion you are looking for.

Using your favorite paint program create an image of vertical stripes
filling the screen. (Or you can film a white wall through a hair comb)
Create a short video of the stripes with some side-to-side motion.
You will use this video in place of the circular-waves-map.
When you composite use a low bump height.

Chienworks wrote on 3/24/2010, 10:45 PM

Well ... since you mentioned me ...

http://www.rchv.com/bgvids/ab08-demo.wmv

Rory Cooper wrote on 3/25/2010, 12:47 AM

Try using the lava media gen track 2
Colors light grey and dark grey = you don’t want it too harsh
Set layers to max
Frequency x 25 + - y6 + -

Animate offset and progress very slow motion

Add a solid white new track 1 cut a mask for your area from white = “you don’t want the heat everywhere” make this a parent composite multiply mask
The parent track composite select displacement .select flip input surface

Drop the opacity of the mask to regulate the amount of the fx

your video track = 3

Spot|DSE wrote on 3/25/2010, 1:04 AM

using a height mode on an overlaid track would also create the effect.