以黑白录制视频 [英] Recording video in Black and White

问题描述

我正在创建一个使用 AVFoundation 和 AVCaptureSession 来录制视频的应用。我想在实时或 AVExportSession 时以黑白方式录制视频。如何才能做到这一点？我已经在8mm和UberCam的应用程序中看到了它。

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.

推荐答案

我认为这个帖子将对您有所帮助。它有Brad Larson的示例代码，它使用着色器来实现不同的效果。

I think this post will help you. It has sample code by Brad Larson which uses shaders to achieve different effects.

编辑： 这个链接有一些关于快速灰度的东西可能有用。

This link has some stuff on fast grayscaling which may be of use.

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