Making transparent video on iOS

Question

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 to get the exact frames of the videos. Can anyone point me in the right direction? Or does somebody have an alternative idea?

Thanks!

Dries

AVAssetReader would give you each raw frame of the video. It would also be in a format ideal for use with core graphics. Take a look at the AVFoundation programmers guide, and this post: [link](http://stackoverflow.com/questions/4049207/reading-samples-via-avassetreader) — Steve McFarlin, Mar 09 '11 at 18:53

score 0 · Answer 1 · edited Oct 15 '14 at 10:26

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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.

edited Oct 15 '14 at 10:26

arco444

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answered Dec 28 '12 at 10:15

frankWhite

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score 0 · Answer 2 · edited Dec 28 '13 at 09:25

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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.

edited Dec 28 '13 at 09:25

Muruganandham K

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answered Jan 25 '12 at 18:48

Eric

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Making transparent video on iOS

2 Answers2