How to apply black and white effect to a color video in iOS

Question

In my application I have a color video which I want to make as black and white video. Is there any framework that supports this in iOS? If so, how to implement that effect o

Answer 1

A bit late here, but you should check out OpenCV.

It can be compiled as a static lib for the iPhone and can convert video (frame by frame) to grayscale or two color.

You can start here. There are other resources for doing this floating around.