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Creating a custom Ripple Effect Dissolve between two sources of Video
I am trying to create a custom-made water-ripple effect cross-dissolve between two sources of video material. (These exist sometimes as presets, with very smooth and defined waves). But now, I want to use actual waves from a lake to create the same effect.
To do this I have two video files that I want to cross dissolve. I have a third piece of video of actual water ripples filmed on a lake.So I am thinking of the following:
1. First I would turn the ripple video into a grayscale image
2. Then, I apply displacement mapping two both videofiles using the ripple video as the source.But, the problem now is that I have to tell somehow to videofile 1 to only be visible in the darker regions of the ripples, whereas I have to tell videofile 2 to be only visible in the lighter regions. Once I define these cutoff levels I could keyframe them and control the levels in time. So how do I do this last part? Any ideas would be greatly appreciated.
Also, If you you have any other approach that you can think of, please let me know. I thought about using a color key, but I don’t think it will look good.
Thanks,
Rutger
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1 Reply
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Once you turn it into a grayscale I’m pretty sure all you need to do is set it as a trackmatte… as long as you have the right layer order things should work out.
trackmatte (grayscale ripples)
video 1
video 2On the video 1 layer under the “modes” column you can select trackmatte from a drop down box and specify your grayscale ripples layer as (in this case) a luma track matte. This should cut all the way through to the video 2 layer so you can make your transition.
Hope this helps.
peace,
Michael
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