I have a crash related to playing video in AVPlayerViewController and AVQueuePlayer. I download the video locally from the network and then initialize it using AVAsset and AVPlayerItem. Can't reproduce locally, but crashes occur from firebase crashlytics only for users starting with iOS 18.4.0 with this trace:
Crashed: com.apple.avkit.playerControllerBackgroundQueue
0 libobjc.A.dylib 0x1458 objc_retain + 16
1 libobjc.A.dylib 0x1458 objc_retain_x0 + 16
2 AVKit 0x12afdc __77-[AVPlayerController currentEnabledAssetTrackForMediaType:completionHandler:]_block_invoke + 108
3 libdispatch.dylib 0x1aac _dispatch_call_block_and_release + 32
4 libdispatch.dylib 0x1b584 _dispatch_client_callout + 16
5 libdispatch.dylib 0x6560 _dispatch_continuation_pop + 596
6 libdispatch.dylib 0x5bd4 _dispatch_async_redirect_invoke + 580
7 libdispatch.dylib 0x13db0 _dispatch_root_queue_drain + 364
8 libdispatch.dylib 0x1454c _dispatch_worker_thread2 + 156
9 libsystem_pthread.dylib 0x4624 _pthread_wqthread + 232
10 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
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I am working on an iPad app using the front camera. The camera logic is implemented using the AVFoundation framework. During a session I use central stage mode to center the face with front camera . Central stage mode works fine in all cases except when I set the session preset photo. In other presets: high, medium, low, cif352x288, vga640x480, hd1280x720, hd1920x1080, iFrame960x540, iFrame1280x720, inputPriority presets central stage mode working except photo session preset. Can you explain why this happens or maybe it is an unobvious bug?
Code snippet:
final class CameraManager {
//MARK: - Properties
private let captureSession: AVCaptureSession
private let photoOutput: AVCapturePhotoOutput
private let previewLayer: AVCaptureVideoPreviewLayer
//MARK: - Init
init() {
captureSession = AVCaptureSession()
photoOutput = AVCapturePhotoOutput()
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
}
//MARK: - Methods Setup Camera and preview layer
func setupPreviewLayerFrame(view: UIView) {
previewLayer.frame = view.frame
view.layer.insertSublayer(previewLayer, at: 0)
setupCamera()
}
private func setupCamera() {
guard let videoCaptureDevice = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .front) else { return }
AVCaptureDevice.centerStageControlMode = .app
AVCaptureDevice.isCenterStageEnabled = true
do {
let input = try AVCaptureDeviceInput(device: videoCaptureDevice)
captureSession.addInput(input)
captureSession.addOutput(photoOutput)
/// high, medium, low, cif352x288, vga640x480, hd1280x720, hd1920x1080, iFrame960x540, iFrame1280x720 and inputPriority presets working except photo session preset
captureSession.sessionPreset = .photo
DispatchQueue.global(qos: .userInteractive).async {
self.captureSession.startRunning()
}
} catch {
print("Error setting up camera: \(error.localizedDescription)")
}
}
}