ios – AVCaptureSession录制视频与音频

概述我的应用程序设置为使用AVCaptureSession从相机录制视频,但是没有音频.我需要做什么来录制音频,然后将其添加到该文件的videoOutput？这是我录制视频的代码： AVCaptureSession *session = [[AVCaptureSession alloc] init];[session beginConfiguration];session.sessionPrese 我的应用程序设置为使用AVCaptureSession从相机录制视频,但是没有音频.我需要做什么来录制音频,然后将其添加到该文件的vIDeoOutput？这是我录制视频的代码：

AVCaptureSession *session = [[AVCaptureSession alloc] init];[session beginConfiguration];session.sessionPreset = AVCaptureSessionPresetMedium;CALayer *vIEwLayer = self.vImagePrevIEw.layer;NSLog(@"vIEwLayer = %@",vIEwLayer);AVCaptureVIDeoPrevIEwLayer *captureVIDeoPrevIEwLayer = [[AVCaptureVIDeoPrevIEwLayer alloc] initWithSession:session];captureVIDeoPrevIEwLayer.vIDeoGravity = AVLayerVIDeoGravityResizeAspectFill;captureVIDeoPrevIEwLayer.frame = self.vImagePrevIEw.bounds;[self.vImagePrevIEw.layer addSublayer:captureVIDeoPrevIEwLayer];AVCaptureDevice *device = [self frontFacingCameraifAvailable];NSError *error = nil;AVCaptureDeviceinput *input = [AVCaptureDeviceinput deviceinputWithDevice:device error:&error];if (!input) {    // Handle the error appropriately.    NSLog(@"ERROR: trying to open camera: %@",error);}NSArray *paths = NSSearchPathForDirectorIEsInDomains(NSdocumentDirectory,NSUserDomainMask,YES);Nsstring *documentsDirectoryPath = [paths objectAtIndex:0];AVCaptureMovIEfileOutput *movIEfileOutput = [[AVCaptureMovIEfileOutput alloc] init];Nsstring *archives = [documentsDirectoryPath stringByAppendingPathComponent:@"archives"];Nsstring *outputpathofmovIE = [[archives stringByAppendingPathComponent:@"Test"] stringByAppendingString:@".mp4"];NSURL *outputURL = [[NSURL alloc] initfileURLWithPath:outputpathofmovIE];[session addinput:input];[session addOutput:movIEfileOutput];[session commitConfiguration];[session startRunning];[movIEfileOutput startRecordingToOutputfileURL:outputURL recordingDelegate:self];

我为音频添加了另一个输入,但它不能与后台的mpmovIEplayercontroller一起使用.有什么想法可以播放一个视频,同时记录相机的音频和视频？

解决方法 您尚未包括音频设备：

AVCaptureDevice *audioDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];AVCaptureDeviceinput * audioinput = [AVCaptureDeviceinput deviceinputWithDevice:audioDevice error:nil];[session addinput:audioinput]

在beginConfiguration和commitConfiguration之间.它会工作！

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