iOS get audio duration from avplayer - ios

Question

I'm new to ios, i have an app which contain online audio player. i need to get total duration for the audio. i have tried lot but all codes returns NaN or 0 duration. What is the best way to get total duration for the audio..?
MY CODE
NSString *songUrl = #"http://9xmusiq.com/songs2/tamil/Kaatru%20Veliyidai/Azhagiye%20%5bStarmusiq.cc%5d.mp3"
AVURLAsset *asset = [AVURLAsset assetWithURL:[NSURL URLWithString:songUrl]];
AVPlayerItem *playerItem1 = [AVPlayerItem playerItemWithAsset:asset];
AVPlayer *player1 = [AVPlayer playerWithPlayerItem:playerItem1];
AVPlayerLayer *playerLayer1 = [AVPlayerLayer playerLayerWithPlayer:player1];
playerLayer1.videoGravity = AVLayerVideoGravityResizeAspectFill;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
playerLayer1.frame = self.view.frame;
});
[self.view.layer insertSublayer:playerLayer1 atIndex:1];
[player1 play];
[playerItem1 addObserver:self forKeyPath:#"status" options:0 context:nil];
[playerItem1 addObserver:self forKeyPath:#"playbackBufferEmpty" options:0 context:nil];
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{
if ([object isKindOfClass:[AVPlayerItem class]]){
AVPlayerItem *item = (AVPlayerItem *)object;
if ([keyPath isEqualToString:#"status"]){
switch(item.status){
case AVPlayerItemStatusFailed:
NSLog(#"player item status failed");
break;
case AVPlayerItemStatusReadyToPlay:
NSLog(#"player item status is ready to play");
Float64 duration = CMTimeGetSeconds(self.avPlayer.currentItem.duration);
NSLog(#"Duration--> %f",duration) // NaN returns
break;
case AVPlayerItemStatusUnknown:
NSLog(#"player item status is unknown");
break;
}
}else if ([keyPath isEqualToString:#"playbackBufferEmpty"]){
if (item.playbackBufferEmpty){
NSLog(#"player item playback buffer is empty");
}
}
}
}

Answer 1

Thanks for your support friends, Finally i find the solution for my problem instead of using AVPlayer i used AVAudioPlayer and i fixed the problem and i got the audio duration.
NSString* resourcePath = #"http://9xmusiq.com/songs2/tamil/Kaatru%20Veliyidai/Azhagiye%20%5bStarmusiq.cc%5d.mp3"; //your url
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:resourcePath]];
NSError *error;
AVAudioPlayer *player1 = [[AVAudioPlayer alloc] initWithData:_objectData error:&error];
player1.numberOfLoops = 0;
player1.volume = 1.0f;
[player1 prepareToPlay];
NSLog(#"Total Duration : %f",player1.duration);
if (player1 == nil){
NSLog(#"%#", [error description]);
}else{
[player1 play];
}

Answer 2

I'm not that familiar with AVPlayer, but in digging around in the docs it looks like the AVAsset (or in your case AVURLAsset) is the object that holds a duration.
Try querying the asset:
AVURLAsset *asset = [AVURLAsset assetWithURL:[NSURL
URLWithString:songUrl]];
CMTime durationCMTime = asset.duration;
Float64 duration =
CMTimeGetSeconds(durationCMTime);
NSLog(#"Duration of asset is %f", duration);

Answer 3

When your AVPlayer ready to play (under the case of AVPlayerItemStatusReadyToPlay), you can use
CMTime duration = self.player.currentItem.asset.duration;
float seconds = CMTimeGetSeconds(duration);

Answer 4

You can access the duration of an AVPlayerItem's asset using duration property. If you need precise seconds with decimals, use Float64 to receive time from CMTimeGetSeconds. For regular use cases, I guess int would be sufficient.
CMTime duration = playerItem1.asset.duration;
int durationTotalSeconds = CMTimeGetSeconds(duration);
int durationHours = floor(durationTotalSeconds / 3600);
int durationMinutes = floor(durationTotalSeconds % 3600 / 60);
int durationSeconds = floor(durationTotalSeconds % 3600 % 60);
NSString *audioDurationString = [NSString stringWithFormat:#"%d:%d:%d",durationHours, durationMinutes, durationSeconds];

Answer 5

you can get duration - (id)addPeriodicTimeObserverForInterval:(CMTime)interval queue:(nullable dispatch_queue_t)queue usingBlock:(void (^)(CMTime time))block;
#property(nonatomic,strong) AVPlayer *player;
#property(nonatomic,strong) id obsever;
self.player = [[AVPlayer alloc]initWithURL:URL];
[self.player play];
self.obsever = [self.player addPeriodicTimeObserverForInterval:interval queue:dispatch_get_main_queue() usingBlock:^(CMTime time) {//you can get duration in block
CMTimeGetSeconds(theItem.currentTime);
CMTimeGetSeconds(theItem.duration)
}];