Swift: AVPlayer - How to get length of mp3 file from URL?

Question

I'm process to build my first IOS app in swift and i get stuck in the question: How to get length (duration) of a music file when streaming ?

I did research a lot and also write some line of codes for solve this problem but seem my code is not good enough.

 func prepareAudio() {
    audioLength = CMTimeGetSeconds(self.player.currentItem.asset.duration) 
    playerProgressSlider.maximumValue = CFloat(CMTimeGetSeconds(player.currentItem.duration))
    playerProgressSlider.minimumValue = 0.0
    playerProgressSlider.value = 0.0
    showTotalSurahLength()
} // i prepare for get the duration and apply to UISlider here

func showTotalSurahLength(){
    calculateSurahLength()
    totalLengthOfAudioLabel.text = totalLengthOfAudio
} // get the right total length of audio file


func calculateSurahLength(){
    var hour_ = abs(Int(audioLength/3600))
    var minute_ = abs(Int((audioLength/60) % 60))
    var second_ = abs(Int(audioLength % 60))

    var hour = hour_ > 9 ? "\(hour_)" : "0\(hour_)"
    var minute = minute_ > 9 ? "\(minute_)" : "0\(minute_)"
    var second = second_ > 9 ? "\(second_)" : "0\(second_)"
    totalLengthOfAudio = "\(hour):\(minute):\(second)"
} // I calculate the time and cover it

Anyone here who ever stuck with this problem, could you give me some suggests for fix it ? I'm very new in Swift and still learn to improve my skill.

Thanks,

score 29 · Answer 1 · answered Oct 24 '15 at 00:25

29

For swift:

let asset = AVURLAsset(URL: NSURL(fileURLWithPath: pathString), options: nil)
let audioDuration = asset.duration
let audioDurationSeconds = CMTimeGetSeconds(audioDuration)

answered Oct 24 '15 at 00:25

Jay

2,591
1
16
28

1

Hi, If there is slow internet connection it is stopping the whole app there, and if there is not internet connection it is returning 0.0. So is there any way to do it in block? and is there any notification fired by it when the resource is available? – souvickcse Sep 06 '17 at 11:05

score 11 · Answer 2 · answered Feb 04 '17 at 02:15

The following function works with Swift 3.0 and will return a Double value containing the duration of the target file.

func duration(for resource: String) -> Double {
    let asset = AVURLAsset(url: URL(fileURLWithPath: resource))
    return Double(CMTimeGetSeconds(asset.duration))
}

This will take the resource parameter, consisting of a String for the filepath of the audio file, and then convert the value from a Float64 to a Double.

score 6 · Answer 3 · answered Jul 01 '15 at 07:32

6

I have made this stuf in iOS and working perfectly.

AVURLAsset* audioAsset = [AVURLAsset URLAssetWithURL:audioUrl options:nil];
CMTime audioDuration = audioAsset.duration;
float audioDurationSeconds = CMTimeGetSeconds(audioDuration);

answered Jul 01 '15 at 07:32

Chetan Prajapati

2,249
19
24

Waylan Sands · Answer 4 · 2020-04-24T12:29:35.583

3

There are a few ways of solving this. This was mine.

    let item = AVPlayerItem(url: url)
    let duration = Double(item.asset.duration.value) / Double(item.asset.duration.timescale)

This will return your asset's duration in seconds

edited Apr 24 '20 at 12:29

answered Apr 24 '20 at 04:02

Waylan Sands

321
3
11

Swift: AVPlayer - How to get length of mp3 file from URL?

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