AVCaptureMovieFileOutput风景方向

Question

我的应用程序使用前置摄像头录制视频。我已成功设置预览图层，以横向右键模式显示它，这是应用程序运行的唯一方式。我如何确保电影输出正确显示？

session = [[AVCaptureSession alloc] init]; 
    [session beginConfiguration]; 
    session.sessionPreset = AVCaptureSessionPresetMedium; 

    CALayer *viewLayer = self.vImagePreview.layer; 
    NSLog(@"viewLayer = %@", viewLayer); 

    self.captureVideoPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:session]; 
    self.captureVideoPreviewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; 
    self.captureVideoPreviewLayer.frame = self.vImagePreview.bounds; 
    [self.captureVideoPreviewLayer setCornerRadius:14]; 
    [self.captureVideoPreviewLayer setBorderWidth:3.0]; 
    [self.captureVideoPreviewLayer setBorderColor:[[UIColor whiteColor] CGColor]]; 
    self.captureVideoPreviewLayer.connection.videoOrientation = AVCaptureVideoOrientationLandscapeRight; 
    [[vImagePreview layer] setCornerRadius:14]; 


    [[vImagePreview layer] setBorderWidth:3.0]; 


    [[vImagePreview layer] setBorderColor:[[UIColor whiteColor] CGColor]]; 
    [self.vImagePreview.layer addSublayer:self.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); 
    } 

    AVCaptureDevice *audioCaptureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio]; 
    NSError *error2 = nil; 
    AVCaptureDeviceInput *audioInput = [AVCaptureDeviceInput deviceInputWithDevice:audioCaptureDevice error:&error2]; 





    AVCaptureMovieFileOutput *movieFileOutput = [[AVCaptureMovieFileOutput alloc] init]; 


    NSString *archives = [documentsDirectoryPath stringByAppendingPathComponent:@"archives"]; 
    NSString *editedfilename = [[selectedCountry lastPathComponent] stringByDeletingPathExtension]; 
    NSString *datestring = [[editedfilename stringByAppendingString:@" "] stringByAppendingString:currentTime]; 
    NSLog(@"%@", datestring); 
    NSString *outputpathofmovie = [[archives stringByAppendingPathComponent:datestring] stringByAppendingString:@".mp4"]; 
    NSURL *outputURL = [[NSURL alloc] initFileURLWithPath:outputpathofmovie]; 
    [session addInput:input]; 
    [session addInput:audioInput]; 
    [session addOutput:movieFileOutput]; 
    [session commitConfiguration]; 
    [session startRunning]; 
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]; 




    [movieFileOutput startRecordingToOutputFileURL:outputURL recordingDelegate:self]; 

    NSLog(@"OutputURL%@", outputURL); 

} 
-(void)viewDidLayoutSubviews { 
    [super viewDidLayoutSubviews]; 

    UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; 
    switch (orientation) { 
     case UIInterfaceOrientationPortrait: 
      [self.captureVideoPreviewLayer.connection setVideoOrientation:AVCaptureVideoOrientationPortrait]; 
      break; 
     case UIInterfaceOrientationPortraitUpsideDown: 
      [self.captureVideoPreviewLayer.connection setVideoOrientation:AVCaptureVideoOrientationPortraitUpsideDown]; 
      break; 
     case UIInterfaceOrientationLandscapeLeft: 
      [self.captureVideoPreviewLayer.connection setVideoOrientation:AVCaptureVideoOrientationLandscapeLeft]; 
      break; 
     case UIInterfaceOrientationLandscapeRight: 
      [self.captureVideoPreviewLayer.connection setVideoOrientation:AVCaptureVideoOrientationLandscapeRight]; 
      break; 
    } 
} 
- (void)captureOutput:(AVCaptureFileOutput *)captureOutput didFinishRecordingToOutputFileAtURL:(NSURL *)outputFileURL fromConnections:(NSArray *)connections error:(NSError *)error { 
    //finished 
    NSLog(@"ErrorMessage%@", error); 
} 
-(IBAction)endcall { 

    [player stop]; 
    [session stopRunning]; 
} 
-(AVCaptureDevice *)frontFacingCameraIfAvailable 
{ 
    NSArray *videoDevices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]; 
    AVCaptureDevice *captureDevice = nil; 
    for (AVCaptureDevice *device in videoDevices) 
    { 
     if (device.position == AVCaptureDevicePositionFront) 
     { 
      captureDevice = device; 
      break; 
     } 
    } 

    // couldn't find one on the front, so just get the default video device. 
    if (! captureDevice) 
    { 
     captureDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; 

    } 

    return captureDevice; 
} 

Answer 1

- (void) captureOutput: (AVCaptureOutput *) captureOutput 

didOutputSampleBuffer：（CMSampleBufferRef）sampleBuffer fromConnection：（AVCaptureConnection *）连接 {

connection.videoOrientation = //ur desired mode; 

}

尝试实现上述委托方法