How to get recording Movie file si… | Apple Developer Forums

How to get recording Movie file size and duration?

I want to get file size and seconds of Movie file recorded by my app using AVFoundation.
I thought it is possible with using AVCaptureFileOutput.recordedFileSize and recordedDuration (by AVCaptureFileOutputRecordingDelegate#didFinishRecordingTo) but recordedFileSize and recordedDuration are zero.

Is it a bug or my mistake? Is there any solve?

Code Block SwiftMyRecordingViewController: AVCaptureFileOutputRecordingDelegate {
	func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {
    let seconds = output.maxRecordedDuration.seconds // zero
    let fileSize = output.maxRecordedFileSize // zero
}