Two ways to realize video recording based on avfoundation

Preface

AVCaptureSession yes AVFoundation Of Core class , Used to manage Capture object AVCaptureInput Of Video and audio input , Coordinate Capture Output AVCaptureOutput.

AVCaptureOutput There are two ways to output ：

• One is to directly movieFileUrl Mode output ;
• One is based on raw data flow data Mode output of

The flow comparison diagram is as follows ：

Here are two ways to record video ：

Scheme 1 、AVCaptureSession + AVCaptureMovieFileOutput

1. establish AVCaptureSession

// Import  AVFoundation.framework 
#import