Recording video in black and white

[carsonp]

I am making an app that uses AVFoundation and an AVCaptureSession to record video. I would like to record the video in black and white either in real time or at the time of the AVExportSession. How can this be done? I've seen it in a few apps already like 8mm and UberCam.

[MattW]

Originally Posted by carsonp

I am making an app that uses AVFoundation and an AVCaptureSession to record video. I would like to record the video in black and white either in real time or at the time of the AVExportSession. How can this be done? I've seen it in a few apps already like 8mm and UberCam.

You average the RGB values in each frame of the video (GrayColor = R+G+B/3) to get the grayscale value of each pixel.

[carsonp]

Originally Posted by MattW

You average the RGB values in each frame of the video (GrayColor = R+G+B/3) to get the grayscale value of each pixel.

Thanks for the quick reply. Could you explain a little bit more in detail here how I would go about that or point me in a direction of which code to look up the documentation on to do this?

Thanks