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Key and fill transition

Q and A about functionality and how to solve a special task for your application.

Moderator: Support

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spikylaura
Posts: 28
Joined: 26 Jan 2012, 11:53

Key and fill transition

Post by spikylaura » 13 Aug 2015, 18:17

Hello all,

I have recently got a couple of SDI licenses and have an issue I could really use some guidance with.

In the example below the checkered background represents external key over video, the red circles are a video with alpha channel and the other image is a matte of the circles. As the circles move across from left to right, they should cover the live video and reveal the Ventuz content (respresented by the car). I have been experimenting with the Alpha Blending node, but without success. If anyone could point me in the right direction, I would be very grateful.
Example fill.jpg
Example Matt.jpg
If anyone could point me in the right direction, I would be very grateful.

Many thanks

Paul

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