iOS 10 - Objective-C : How to implement AVCapturePhotoOutput() to capture image and videos?

Question

I'm trying to implement capture image and videos from my app, and now from iOS 10 onward "AVCaptureStillImageOutput" is deprecated.

Please help me to implement AVCapturePhotoOutput in Objective-C.

Here is my sample code:

_avCaptureOutput = [[AVCapturePhotoOutput alloc]init];
_avSettings = [AVCapturePhotoSettings photoSettings];


AVCaptureSession* captureSession = [[AVCaptureSession alloc] init];
[captureSession startRunning];



AVCaptureConnection *connection = [self.movieOutput connectionWithMediaType:AVMediaTypeVideo];

if (connection.active)
{
    //connection is active
    NSLog(@"Connection is active");

    id previewPixelType = _avSettings.availablePreviewPhotoPixelFormatTypes.firstObject;
    NSDictionary *format = @{(NSString*)kCVPixelBufferPixelFormatTypeKey:previewPixelType,(NSString*)kCVPixelBufferWidthKey:@160,(NSString*)kCVPixelBufferHeightKey:@160};

    _avSettings.previewPhotoFormat = format;

    [_avCaptureOutput capturePhotoWithSettings:_avSettings delegate:self];


}
else
{
    NSLog(@"Connection is not active");
    //connection is not active
    //try to change self.captureSession.sessionPreset,
    //or change videoDevice.activeFormat
}

self.movieOutput is kind of AVCaptureMovieFileOutput class. and yes i did implemented the AVCapturePhotoCaptureDelegate method. — Anand Kore, Oct 10 '16 at 06:00

score 12 · Accepted Answer · edited May 16 '19 at 08:05

_avCaptureOutput = [[AVCapturePhotoOutput alloc]init];
_avSettings = [AVCapturePhotoSettings photoSettings];

AVCaptureSession* captureSession = [[AVCaptureSession alloc] init];
[captureSession startRunning];

[self.avCaptureOutput capturePhotoWithSettings:self.avSettings delegate:self];

self must implement the AVCapturePhotoCaptureDelegate

#pragma mark - AVCapturePhotoCaptureDelegate
-(void)captureOutput:(AVCapturePhotoOutput *)captureOutput didFinishProcessingPhotoSampleBuffer:(CMSampleBufferRef)photoSampleBuffer previewPhotoSampleBuffer:(CMSampleBufferRef)previewPhotoSampleBuffer resolvedSettings:(AVCaptureResolvedPhotoSettings *)resolvedSettings bracketSettings:(AVCaptureBracketedStillImageSettings *)bracketSettings error:(NSError *)error
{
    if (error) {
        NSLog(@"error : %@", error.localizedDescription);
    }

    if (photoSampleBuffer) {
        NSData *data = [AVCapturePhotoOutput JPEGPhotoDataRepresentationForJPEGSampleBuffer:photoSampleBuffer previewPhotoSampleBuffer:previewPhotoSampleBuffer];
        UIImage *image = [UIImage imageWithData:data];
    }
}

Now, you get the image, and do whatever you want.

Note: Since iOS 11, -captureOutput:didFinishProcessingPhotoSampleBuffer:... is deprecated, need to use -captureOutput:didFinishProcessingPhoto:error: instead:

- (void)captureOutput:(AVCapturePhotoOutput *)output didFinishProcessingPhoto:(AVCapturePhoto *)photo error:(nullable NSError *)error
{  
  NSData *imageData = [photo fileDataRepresentation];
  UIImage *image = [UIImage imageWithData:data];
  ...
}

Really easy implementation – Robert Bentley Feb 27 '17 at 16:38 — Robert Bentley, Feb 27 '17 at 16:38
How do you get the preview photo from this? – user2995344 Aug 28 '17 at 23:37 — user2995344, Aug 28 '17 at 23:37

iOS 10 - Objective-C : How to implement AVCapturePhotoOutput() to capture image and videos?

1 Answers1