[AVPlayerItem duration] is always indefinite
Originator: | hendrik.schreiber | ||
Number: | rdar://45039043 | Date Originated: | 10/5/2018 |
Status: | Open | Resolved: | |
Product: | macOS + SDK | Product Version: | 10.14.0 (18A391) |
Classification: | Bug | Reproducible: | Always |
I'm trying to read the duration of a locally stored audio file using the following code: #import <Foundation/Foundation.h> #import <CoreMedia/CoreMedia.h> #import <AVFoundation/AVFoundation.h> [...] AVPlayer *player = [AVPlayer playerWithURL: urlForLocalAudioFile]; // busy wait - I know, not elegant, please ignore int timeout = 0; while (([player status] == AVPlayerStatusUnknown || [[player currentItem] status] == AVPlayerItemStatusUnknown) && timeout < 100) { [NSThread sleepForTimeInterval: 0.1]; timeout++; } // make sure we have the right status if ([[player currentItem] status] == AVPlayerItemStatusReadyToPlay) { CMTime cmTime = [[player currentItem] duration]; if (CMTIME_IS_INDEFINITE(cmTime)) { NSLog(@"Duration is kCMTimeIndefinite"); } else { NSLog(@"Time: %d", CMTimeGetSeconds(cmTime)); } } else { NSLog(@"Item not ready to play"); } The code is not executed in the main AppKit thread and it used to work under macOS 10.13.x and earlier. Now with 10.14.0 it always reports "Duration is kCMTimeIndefinite". Even after I have started playing the file. macOS 10.14.0 (18A391)
Comments
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Workaround
Use
CMTime cmTime = [[[player currentItem] asset] duration];
instead of
CMTime cmTime = [[player currentItem] duration];