如何在录制视频时以编程方式拍摄照片 [英] How to Programmatically Take Photos While Recording Video

问题描述

iPhone 5S能够在录制视频时拍照，我正在试图弄清楚如何以编程方式执行此操作。我知道我会使用AVFoundation，但是，我在编程指南。我还检查了示例项目（与AVFoundation相关）并且看起来没有任何东西能够满足我的需求。如果你可以帮我指出一个很好的方向。

The iPhone 5S is capable of taking pictures while recording video and I am trying to figure out how I would do this programatically. I know I would be utilizing AVFoundation, however, I couldn't find anything in the programming guide regarding this. I have also checked the sample projects (AVFoundation-related) and it doesn't look like there is anything there that does what I am looking for. if you could help point me in the right direction that would be great.

推荐答案

实际上你可以用任何能够录制视频：

Actually you can do it with any device that can record video:

• 创建并配置 AVCaptureVideoDataOutput 。


• 将其添加到您的 AVCaptureSession 。


• 添加 AVCaptureVideoDataOutputSampleBufferDelegate 。


• 在委托中实现 captureOutput：didOutputSampleBuffer：fromConnection：并使用 imageFromSampleBuffer获取图像：。

• Create and configure a AVCaptureVideoDataOutput.
• Add it to your AVCaptureSession.
• Add a AVCaptureVideoDataOutputSampleBufferDelegate.
• Implement captureOutput:didOutputSampleBuffer:fromConnection: in the delegate and get the image with imageFromSampleBuffer:.

可以找到一些类似的代码这里，其中以给定间隔捕获图像，但您只需要一个图像。

Some similar code can be found here, where images are captured at a given interval, but you only want one image.

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