AVPlayer does not update currentPlaybackTime when seeking backwards

Question

I have an NSTimer set up that fires every 0.1 seconds, in the callback I fetch currentTime() and use it to update the label with the duration of the video.

When I am seeking forwards, by setting the rate to 3, this timer keeps up, but when I set the rate to -3, the video keeps up, but the currentTime() still returns the same value from when I started seeking. This occurs until I stop seeking and then currentTime() returns the correct time

How can I fetch the current time the video is at, which will work when seeking backwards?

Edit: Here is the code I use (translated from Xamarin C#):

class VideoPlayer: UIView {

    var player: AVPlayer!
    var wasPaused: Bool!

    func play(url: String) {
        // set the URL to the Video Player
        let streamingURL: NSURL = NSURL(string: url)!
        player = AVPlayer(URL: streamingURL)
        let playerLayer = AVPlayerLayer(layer: player)
        layer.insertSublayer(playerLayer, atIndex: 0)

        // Reset the state
        player.seekToTime(CMTime(seconds: 0, preferredTimescale: 600))

        // Start a timer to move the scrub label
        NSTimer(timeInterval: 0.1, target: self, selector: #selector(playbackTimeUpdated), userInfo: nil, repeats: true)
    }

    func playbackTimeUpdated() {
        // This one is not correct when seeking backwards
        let time = player.currentTime().seconds;

        // Use the time to adjust a UIProgressView
    }

    // Gets called when the reverse button is released
    func reverseTouchUp() {
        player.rate = 1
    }

    // Gets called when the reverse button is pressed
    func reverseTouchDown()
    {
        player.rate = -3;
    }
}

Answer 1

Try CMTimeGetSeconds(player.currentTime()) instead of player.currentTime().seconds. It works for me.

Also check that you timer is actually running (add NSLog calls to it for example), maybe you just blocking its thread.