avfoundation

This is Apple's code (from Technical Q&A QA1702) for getting a UIImage from a video buffer. Unfortunately, the image returned is rotated 90 degrees. How do I edit this so that the image returned is correctly oriented? - (UIImage *) imageFromSampleBuffer:(CMSampleBufferRef) sampleBuffer { CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer); CVPixelBufferLockBaseAddress(imageBuffer, 0); void *baseAddress = CVPixelBufferGetBaseAddress(imageBuffer); size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer); size_t width = CVPixelBufferGetWidth(imageBuffer); size_t height

I know this question was asked before (for example here and here ) but I just can't figure out what I'm doing wrong. I have an AVMutableComposition that I use to combine some video clips with some CALayer s that animate on top of them. Everything works ok when I take my AVMutableComposition and combine it with an AVSynchronizedLayer for playback inside an AVPlayerLayer . The video comes out correctly and everything is positioned where it should. My problem is that when I tried to export this thing I tried using AVVideoCompositionCoreAnimationTool instead of AVSynchronizedLayer (that's what the

i have captured video using AVFoundation .i have set (video setting )and get in outputsamplebuffer kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange format. But i need YUV420 format for further processing . My doubt is 1.difference among 420YpCbCr8BiPlanarVideoRange,420YpCbCr8BiPlanarFULLRange, 420YpCbCr8PlanarFullRange,420YpCbCr8Planar and YUV420 ? 2.how can i convert 420YpCbCr8BiPlanarVideoRange to YUV420 ? 3. How to Convert YUV420 To 32BGRA ? 4) or some other Way to do this??? that is Any open source library or Apple Framework.... i have gone through Accelerate framework ...... it has image

This seems like a simple task, yet it is driving me nuts. Is it possible to convert a UIView containing AVCaptureVideoPreviewLayer as a sublayer into an image to be saved? I want to create an augmented reality overlay and have a button save the picture to the camera roll. Holding the power button + home key captures the screenshot to the camera roll, meaning that all of my capture logic is working, AND the task is possible. But I cannot seem to be able to make it work programmatically. I'm capturing a live preview of the camera's image using AVCaptureVideoPreviewLayer . All of my attempts to

I'm am using the iOS AVFoundation framework and I am able to successfully merge video tracks, with image overlays, and text overlays. However, my output file doesn't keep the audio intact from my original source video. How can I make sure that the audio source from one of my videos stays with the new video I create? EDIT *Use this code to have a good example of how to accomplish this creating a video (with original audio). It was not obvious to me that I need to include the audio track seperatly when processing a video with AVFoundation. Hope this helps somebody else. AVAssetTrack *videoTrack

Some days ago I was asked to check how difficult is to play a video while downloading it from Internet. I know it's an easy task because someone told me a while ago. So, I checked and it was super easy. The problem was that I wanted to save to disk the video to do not force the user to download it again and again. The problem was to access the buffer and store it to disk. Many answers in Stackoverflow says it is nor possible. Specially with videos. My original code to play the video: import AVFoundation .... //MARK: - Accessors lazy var player: AVPlayer = { var player: AVPlayer = AVPlayer

When obtaining a UIImage of a video via AVAssetImageGenerator, I'm getting back images rotated (well, technically they're not) when the video is shot in portrait orientation. How can I tell what orientation the video was shot and then rotate the image properly? AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:url options:nil]; AVAssetImageGenerator *generate = [[AVAssetImageGenerator alloc] initWithAsset:asset]; NSError *err = NULL; CMTime time = CMTimeMake(0, 60); CGImageRef imgRef = [generate copyCGImageAtTime:time actualTime:NULL error:&err]; [generate release]; UIImage *currentImg = [

I am capturing the video using UIImagePickerController, i can crop the video using the following code, AVAsset *asset = [AVAsset assetWithURL:url]; //create an avassetrack with our asset AVAssetTrack *clipVideoTrack = [[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0]; //create a video composition and preset some settings AVMutableVideoComposition* videoComposition = [AVMutableVideoComposition videoComposition]; videoComposition.frameDuration = CMTimeMake(1, 30); //here we are setting its render size to its height x height (Square) videoComposition.renderSize = CGSizeMake

I wrote a program in Swift.I want to merge a video with an audio file, but got this error. "failed Error Domain=AVFoundationErrorDomain Code=-11838 "Operation Stopped" UserInfo=0x17da4230 {NSLocalizedDescription=Operation Stopped, NSLocalizedFailureReason=The operation is not supported for this media.}" code func mergeAudio(audioURL: NSURL, moviePathUrl: NSURL, savePathUrl: NSURL) { var composition = AVMutableComposition() let trackVideo:AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: CMPersistentTrackID()) let trackAudio