void ToggleMovieRecording(NSObject sender)
{
/*
* Disable the Camera button until recording finishes, and disable
* the Record button until recording starts or finishes.
*
* See the AVCaptureFileOutputRecordingDelegate methods.
*/
//CameraButton.Enabled = false;
//RecordButton.Enabled = false;
//CaptureModeControl.Enabled = false;
/*
* Retrieve the video preview layer's video orientation on the main queue
* before entering the session queue. We do this to ensure UI elements are
* accessed on the main thread and session configuration is done on the session queue.
*/
var videoPreviewLayerVideoOrientation = VideoPreviewLayer.Connection.VideoOrientation;
sessionQueue.DispatchAsync(() =>
{
if (!movieFileOutput.Recording)
{
if (UIDevice.CurrentDevice.IsMultitaskingSupported)
{
/*
* Setup background task.
* This is needed because the -[captureOutput:didFinishRecordingToOutputFileAtURL:fromConnections:error:]
* callback is not received until AVCam returns to the foreground unless you request background execution time.
* This also ensures that there will be time to write the file to the photo library when AVCam is backgrounded.
* To conclude this background execution, -[endBackgroundTask:] is called in
* -[captureOutput:didFinishRecordingToOutputFileAtURL:fromConnections:error:] after the recorded file has been saved.
*/
backgroundRecordingId = UIApplication.SharedApplication.BeginBackgroundTask(null);
}
// Update the orientation on the movie file output video connection before starting recording.
var movieFileOutputConnection = movieFileOutput.ConnectionFromMediaType(AVMediaType.Video);
movieFileOutputConnection.VideoOrientation = videoPreviewLayerVideoOrientation;
// Use HEVC codec if supported
if (movieFileOutput.AvailableVideoCodecTypes.Where(codec => codec == AVVideo2.CodecHEVC).Any())
{
movieFileOutput.SetOutputSettings(new NSDictionary(AVVideo.CodecKey, AVVideo2.CodecHEVC), movieFileOutputConnection);
}
// Start recording to a temporary file.
var outputFileName = Guid.NewGuid().ToString();
var livePhotoMovieFilePath = NSFileManager.DefaultManager.GetTemporaryDirectory().Append($"{outputFileName}.mov", false);
movieFileOutput.StartRecordingToOutputFile(livePhotoMovieFilePath, this);
}
else
{
movieFileOutput.StopRecording();
}
});
}
