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Questions tagged [avfoundation]

The AVFoundation framework provides both Objective-C and Swift interfaces for editing and playing audio-visual media in a Mac OSX or iOS application. Questions using this framework should include this tag.

6407 questions
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AVURLAsset refuses to load video

I'm trying to load a video file into my iPad app as an AVURLAsset, using the asynchronous-loading stuff to wait for it to be ready. Problem is, when I run it, I get a completely generic "failure" error message that I have no idea what to do with.…
Noah Witherspoon
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Swift 2.0: Type of Expression is ambiguous without more context?

The following used to work in Swift 1.2: var recordSettings = [ AVFormatIDKey: kAudioFormatMPEG4AAC, AVEncoderAudioQualityKey : AVAudioQuality.Max.rawValue, AVEncoderBitRateKey : 320000, AVNumberOfChannelsKey: 2, AVSampleRateKey…
lernerbot
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Face Detection with Camera

How can I do face detection in realtime just as "Camera" does? I noticed that AVCaptureStillImageOutput is deprecated after 10.0, so I use AVCapturePhotoOutput instead. However, I found that the image I saved for facial detection is not so…
Willjay
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How to solve the warning: Sending 'ViewController *const __strong' to parameter of incompatible type 'id?

The following code gave a warning of Sending 'ViewController *const __strong' to parameter of incompatible type 'id' (it is the third line in the following code): NSURL *sound0URL = [NSURL fileURLWithPath:[[NSBundle…
Jeremy L
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AVFoundation + AssetWriter: Generate Movie With Images and Audio

I have to export a movie from my iPhone application which contains UIImage from an NSArray and add some audio files in .caf format that have to start at pre-specified times. Now I have been able to use the AVAssetWriter (after going through many…
MuTaTeD
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Can use AVCaptureVideoDataOutput and AVCaptureMovieFileOutput at the same time?

I want to record video and grab frames at the same time with my code. I am using AVCaptureVideoDataOutput for grab frames and AVCaptureMovieFileOutput for video recording. But can't work and get the error code -12780 while working at the same time…
Yu-hua Chang
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3 answers

Capturing Video with AVFoundation

I've been looking around on Stack and I have found similar questions to this, but none have worked for me. I am a complete novice to Swift 3.0. Essentially what I'm trying to do is record a video using AVFoundation. So far I have managed to capture…
Adam Allard
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AVPlayerItem fails with AVStatusFailed and error code "Cannot Decode"

I'm running into a strange issue, I hope someone can help. In my iOS app I create a video with a custom soundtrack using MutableComposition by combining a video from the user's photo library and an audio file from the app bundle. I then use an…
user1112293
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iPhone AVFoundation camera orientation

I've been tearing my hair out trying to get the AVFoundation camera to capture a picture in the correct orientation (i.e. the device orientation) but I can't get it to work. I have looked at tutorials, I've watched the WWDC presentation and I've…
Fogmeister
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1 answer

AVPlayer frame animation

I am developing an application that include functionality to play video with per-frame animation. You can see an example of such functionality. I already tried to add CAKeyFrameAnimation to sublayer of AVSynchronizedLayer and have some troubles…
rkyr
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4 answers

Is it possible to cache HLS segments with AVPlayer?

Root Problem​ Our video buffers a lot when seeking in iOS. It buffers quite a bit more than our web player which saves copies of the already watched segments in temp storage. ​Desired Solution​ Caching the video segments locally on the device's…
Nathan Hillyer
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5 answers

AVCaptureSession with multiple previews

I have an AVCaptureSession running with an AVCaptureVideoPreviewLayer. I can see the video so I know it's working. However, I'd like to have a collection view and in each cell add a preview layer so that each cell shows a preview of the video. If I…
Fogmeister
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How to properly release an AVCaptureSession

I'm using the AVFoundation classes to capture the live video stream from the camera and to process the video samples. This works nicely. However, I do have problems properly releasing the AVFoundation instances (capture session, preview layer, input…
Codo
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How to stop a video in AVPlayer?

I am using this code to play video file using avplayer how do I stop it [videoView setHidden:NO]; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths…
iTag
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Add custom header field in request of AVPlayer

Is it possible to send headers with an http request to an audio file when using AVPlayer? I need to be able to inspect the content of the header when received by the server in order to restrict access to the file being requested.
user732538
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