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    <p>I like @Roma's suggestion of using GPU Image - great idea. . . . however if you want a pure CocoaTouch approach, here's what to do: </p> <p><strong>Implement AVCaptureVideoDataOutputSampleBufferDelegate</strong></p> <pre><code>- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection { // Create a UIImage+Orientation from the sample buffer data if (_captureFrame) { [captureSession stopRunning]; _captureFrame = NO; UIImage *image = [ImageTools imageFromSampleBuffer:sampleBuffer]; image = [image rotate:UIImageOrientationRight]; _frameCaptured = YES; if (delegate != nil) { [delegate cameraPictureTaken:image]; } } } </code></pre> <p><strong>Capture as Follows:</strong></p> <pre><code>+ (UIImage *) imageFromSampleBuffer:(CMSampleBufferRef) sampleBuffer { // Get a CMSampleBuffer's Core Video image buffer for the media data CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer); // Lock the base address of the pixel buffer CVPixelBufferLockBaseAddress(imageBuffer, 0); // Get the number of bytes per row for the pixel buffer void *baseAddress = CVPixelBufferGetBaseAddress(imageBuffer); // Get the number of bytes per row for the pixel buffer size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer); // Get the pixel buffer width and height size_t width = CVPixelBufferGetWidth(imageBuffer); size_t height = CVPixelBufferGetHeight(imageBuffer); // Create a device-dependent RGB color space CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); // Create a bitmap graphics context with the sample buffer data CGContextRef context = CGBitmapContextCreate(baseAddress, width, height, 8, bytesPerRow, colorSpace, kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst); // Create a Quartz image from the pixel data in the bitmap graphics context CGImageRef quartzImage = CGBitmapContextCreateImage(context); // Unlock the pixel buffer CVPixelBufferUnlockBaseAddress(imageBuffer,0); // Free up the context and color space CGContextRelease(context); CGColorSpaceRelease(colorSpace); // Create an image object from the Quartz image UIImage *image = [UIImage imageWithCGImage:quartzImage]; // Release the Quartz image CGImageRelease(quartzImage); return (image); } </code></pre> <p><strong>Blend the UIImage with the overlay</strong></p> <ul> <li>Now that you have the UIImage, add it to a new UIView. </li> <li>Add the overlay on top as a sub-view. </li> </ul> <p><strong>Capture the new UIView</strong></p> <pre><code>+ (UIImage*)imageWithView:(UIView*)view { UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, [UIScreen mainScreen].scale); [view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage* img = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return img; } </code></pre>
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    1. POIs it possible to render AVCaptureVideoPreviewLayer in a graphics context?
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    1. USJasper Blues
    1. USJasper Blues
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    1. COI think this is what I am looking for. Will try to get this running and let you know how it goes. Thanks for the quick answer!
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      1. USNitin Alabur
    2. COare you using an uiimage extension for image = [image rotate:UIImageOrientationRight]; ?
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      1. USNitin Alabur
    3. COYes, that step is optional. However, let me give you the code.
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