How to Programmatically Take Photos While Recording Video - iphone

Question

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.

Answer 1

Actually you can do it with any device that can record video:
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:.
Some similar code can be found here, where images are captured at a given interval, but you only want one image.

Answer 2

In iOS7 there has a new api to capture UIView, we can get image and do something.
eg:
UIView+Screenshot.h
-(UIImage *)convertViewToImage;
UIView+Screenshot.m
-(UIImage *)convertViewToImage
{
UIGraphicsBeginImageContext(self.bounds.size);
[self drawViewHierarchyInRect:self.bounds afterScreenUpdates:YES];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
Apple's Document: drawViewHierarchyInRect:afterScreenUpdates:

Answer 3

Through AVCaptureSession you can easily achieve iPhone 5S in the camera app functionality.
In your view touch event:
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection "
You can get current frame on above delegate method and save it in your gallery.
Please go through below link:
https://developer.apple.com/library/ios/samplecode/RosyWriter/Introduction/Intro.html

Answer 4

I agree with Rivera's answer ! You are going to need AV
And this is how I do it after the hole AV stuff
CGImageRef bigImage = image.CGImage;
CGRect rectImage = CGRectMake(self.scannArea.origin.x*widhtRatio,
self.scannArea.origin.y*heightRatio - 50,
self.scannArea.size.width*widhtRatio,
self.scannArea.size.height*heightRatio);
CGImageRef part = CGImageCreateWithImageInRect(bigImage, rectImage);
UIImageWriteToSavedPhotosAlbum([UIImage imageWithCGImage:part], nil, nil, nil);
image = [self drawImage:[UIImage imageNamed:#"overlaygraphic.png"]
inImage:image
atPoint:CGPointMake(self.scannArea.origin.x*widhtRatio,
self.scannArea.origin.y*heightRatio - 50)];
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
if you want to see the hole sample np. I will upload my class