如何捕获黑白视频 [英] How to capture the black and white video

问题描述

我是iPhone应用程序开发的新手.我开发了一个iPhone应用程序.在此应用程序中，我想使用iPhone相机开发记录黑白视频的记录.请帮助我如何开发此方法，然后再提供一些示例代码url.

I am new in iPhone application development. I develop one iPhone application. In this application i want to develop record the black and white video using iPhone camera. Please help me how to develop this and then give some example code url also.

谢谢.

推荐答案

您要使用kCVPixelFormatType_420YpCbCr8BiPlanarFullRange格式.

You want to use the kCVPixelFormatType_420YpCbCr8BiPlanarFullRange format.

将此添加到您的视频输出中

adding this to your videooutput

OSType format = kCVPixelFormatType_420YpCbCr8BiPlanarFullRange;

    videoOutput.videoSettings = [NSDictionary dictionaryWithObject:[NSNumber 
                                                                    numberWithUnsignedInt:format]
                                                            forKey:(id) kCVPixelBufferPixelFormatTypeKey];

然后按照以下步骤将Y平面从灰度转换为图像:

and following this to convert the Y plane to grayscale to images:

AVFoundation-从Y平面获取灰度图像(kCVPixelFormatType_420YpCbCr8BiPlanarFullRange)

，或者如果您要将其另存为视频:

or if you want to save it as video:

如何如何将iPhone摄像机的实时视频源转换为灰度?

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