Isolating a Specific Color

M

MikeSun

Member
I'm working on a video footage where I want to isolate the color of the car while leaving the background completely black and white.

I was able to do this by using two videos track of the same. Track 1 had the black and white video FX added to it and I used the breizer mask tool under the same track. Track 2 was left as the original footage. The picture below is what I have so far.

http://img.photobucket.com/albums/v255/bunlow32/Camera_shots/mcoupe_test.jpg

My question is, how do I make the mask follow the car? I've been fidling with the controls but I can't. My problem the size of the car changes as it comes closer to the car and moves away.

Any help will be appreciated.
 
There are two options that I have used for this effect which work very well. The first is the secondary color corrector effect within Vegas. What you will do is select the color range that you want and then alter the saturdation level once you have that color masked. It is very effective and works well. You just select the range you are looking for using the eye dropper. Personally I always color correct to extremes before I attempt to do this.

The second method is to use the Beizer mask tools and keyframe the entire mask. For me, it normally takes me 2-3 minutes per frame to do a single mask (depending on the complexity of what I am selecting) and mask throughout the shot. If it is a car driving away then you are looking at roughly 1-10 seconds, so 24-240 frames. Budget yourself 1-5 hours to pull this off. If you invest the time wisely into this method it is very effective, albeit time consuming.

Hope this helps!

-Jeremy
 
You can save a little time animating a bezier mask by feathering it a little bit, so that the mask doesn't have to be super-precise. This works well on smoothly-moving objects, and especially for something like this when you're using the same frame underneath.

Then, let the keyframe interpolation work for you. Don't just go frame-by frame - mask your first frame, then skip ahead 12 frames or so and do another mask. Then, check the frames in between and see how well the interplation matches the movement. You may find that you don't have to adjust every frame, and then only a few points for those you do.

Lather, rinse, repeat for the whole clip.
 
David Jimerson said:
You can save a little time animating a bezier mask by feathering it a little bit, so that the mask doesn't have to be super-precise.
Click to expand...


David, how do you feather a bezier mask? I've never done that and always go about it the slow hard way.
 
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