Making transparent video on iOS

I have two mp4 movies. One that has the actual video and one with the alpha values. My intention is that the first movie will get a transparent look, by merging it with the second one, where the second one will be the mask of the first one.

I know how to do this: with the CGImage alpha and blending tools. But I don't know how t开发者_如何学运维o get the exact frames of the videos. Can anyone point me in the right direction? Or does somebody have an alternative idea?

Thanks!

Dries

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You may want to look into some of the augmented reality sample apps out there. They are doing real-time calculations based on each frame.

This link is a good place to start.

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Try this link - great framework for creating image filters. In this framework you also can create video stream filtering from camera or filter already recorded video. Hope this help.