Strictly speaking you don’t need to transcode the fmp4 if it contains h264+aac, you just need to repackage the sample data as TS. (using ffmpeg -codec copy or gpac) Wrt. alignment (1.2) I suppose this all depends on your encoder settings (frame rate, sample rate and GOP size). It is certainly possible to make sure … Read more
The easiest way is to just set the appliesPreferredTrackTransform property on the image generator to YES, then it should automatically do the transformation for you.
With AVCaptureSession and AVAssetWriter you can set the compression settings as such: NSDictionary *settings = @{AVVideoCodecKey:AVVideoCodecH264, AVVideoWidthKey:@(video_width), AVVideoHeightKey:@(video_height), AVVideoCompressionPropertiesKey: @{AVVideoAverageBitRateKey:@(desired_bitrate), AVVideoProfileLevelKey:AVVideoProfileLevelH264Main31, /* Or whatever profile & level you wish to use */ AVVideoMaxKeyFrameIntervalKey:@(desired_keyframe_interval)}}; AVAssetWriterInput* writer_input = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:settings]; Edit: I guess if you insist on using the UIImagePicker to create the movie in the … Read more
You can use this Swift 5 code to play system sounds: // import this import AVFoundation // create a sound ID, in this case its the tweet sound. let systemSoundID: SystemSoundID = 1016 // to play sound AudioServicesPlaySystemSound(systemSoundID) The most up to date list of sounds I could find are here. Documentation Reference And this … Read more
I found the solution and it’s related to something I didn’t mention and didn’t think about: I’m compiling with Automatic Reference Counting (ARC). ARC inserts a release call to the audio player, so it’s deallocated right after leaving the method where it is created. It has nothing to do with AVAudioPlayer but with ARC. In … Read more
Sadly, using an HLS stream with AVFoundation doesn’t give you any control over the audio tracks. I ran into the same problem trying to mute an HLS stream, which turned out to be impossible. The only way you could read audio data would be to tap into the AVAudioSession. EDIT You can access the AVAudioSession … Read more
Maybe this solves it? CGRect bounds=view.layer.bounds; avLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; avLayer.bounds=bounds; avLayer.position=CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
Swift 5.5, Xcode 13.2 private func updatePreviewLayer(layer: AVCaptureConnection, orientation: AVCaptureVideoOrientation) { layer.videoOrientation = orientation self.previewLayer?.frame = view.bounds } override func viewDidLayoutSubviews() { super.viewDidLayoutSubviews() if let connection = self.previewLayer?.connection { let currentDevice = UIDevice.current let orientation: UIDeviceOrientation = currentDevice.orientation let previewLayerConnection: AVCaptureConnection = connection if previewLayerConnection.isVideoOrientationSupported { switch orientation { case .portrait: self.updatePreviewLayer(layer: previewLayerConnection, orientation: .portrait) … Read more
You need to set your app Capabilities Background Modes (Audio and AirPlay) and set your AVAudioSession category to AVAudioSessionCategoryPlayback and set it active From Xcode 11.4 • Swift 5.2 do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [.mixWithOthers, .allowAirPlay]) print(“Playback OK”) try AVAudioSession.sharedInstance().setActive(true) print(“Session is Active”) } catch { print(error) }
Build your AVPlayerItem in a background queue as much as possible (some operations you have to do on the main thread, but you can do setup operations and waiting for video properties to load on background queues – read the docs very carefully). This involves voodoo dances with KVO and is really not fun. The … Read more