Check play state of AVPlayer

Question

Is there a way to know whether an AVPlayer playback has stalled or reached the end

User · Answer

In iOS10  there s a built in property for this now  timeControlStatus  For example  this function plays or pauses the avPlayer based on it s status and updates the play pause button appropriately    IBAction func btnPlayPauseTap   sender  Any        if aPlayer timeControlStatus     playing           aPlayer pause           btnPlay setImage UIImage named   control-play    for   normal        else if aPlayer timeControlStatus     paused           aPlayer play           btnPlay setImage UIImage named   control-pause    for   normal            As for your second question  to know if the avPlayer reached the end  the easiest thing to do would be to set up a notification   NotificationCenter default addObserver self  selector   selector self didPlayToEnd   name   AVPlayerItemDidPlayToEndTime  object  nil    When it gets to the end  for example  you can have it rewind to the beginning of the video and reset the Pause button to Play    objc func didPlayToEnd         aPlayer seek to  CMTimeMakeWithSeconds 0  1       btnPlay setImage UIImage named   control-play    for   normal      These examples are useful if you re creating your own controls  but if you use a AVPlayerViewController  then the controls come built in

User · Answer

A more reliable alternative to NSNotification is to add yourself as observer to player s rate property     self player addObserver self               forKeyPath   rate                   options NSKeyValueObservingOptionNew                  context NULL     Then check if the new value for observed rate is zero  which means that playback has stopped for some reason  like reaching the end or stalling because of empty buffer   -  void observeValueForKeyPath  NSString   keyPath                       ofObject  id object                         change  NSDictionary lt NSString   id gt    change                        context  void   context       if   keyPath isEqualToString   rate              float rate    change NSKeyValueChangeNewKey  floatValue           if  rate    0 0                   Playback stopped           else if  rate    1 0                   Normal playback           else if  rate    -1 0                   Reverse playback                     For rate    0 0 case  to know what exactly caused the playback to stop  you can do the following checks   if  self player error    nil           Playback failed   if  CMTimeGetSeconds self player currentTime   gt       CMTimeGetSeconds self player currentItem duration            Playback reached end   else if   self player currentItem playbackLikelyToKeepUp           Not ready to play  wait until enough data is loaded     And don t forget to make your player stop when it reaches the end   self player actionAtItemEnd   AVPlayerActionAtItemEndPause

User · Answer

Currently with swift 5 the easiest way to check if the player is playing or paused is to check the  timeControlStatus variable   player timeControlStatus     paused player timeControlStatus     playing

User · Answer

Answer is Objective C   if  player timeControlStatus    AVPlayerTimeControlStatusPlaying          player is playing   else if  player timeControlStatus    AVPlayerTimeControlStatusPaused          player is pause   else if  player timeControlStatus    AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate          player is waiting to play

User · Answer

You can tell it s playing using   AVPlayer  player       if   player rate    0   amp  amp   player error    nil            player is playing     Swift 3 extension   extension AVPlayer       var isPlaying  Bool           return rate    0  amp  amp  error    nil

User · Answer

Swift extension based on the answer by maz  extension AVPlayer        var isPlaying  Bool           return   rate    0   amp  amp   error    nil

User · Answer

rate is NOT the way to check whether a video is playing  it could stalled   From documentation of rate      Indicates the desired rate of playback  0 0 means  paused   1 0 indicates a desire to play at the natural rate of the current item    Key words  desire to play  - a rate of 1 0 does not mean the video is playing   The solution since iOS 10 0 is to use AVPlayerTimeControlStatus which can be observed on AVPlayer timeControlStatus property    The solution prior to iOS 10 0  9 0  8 0 etc   is to roll your own solution  A rate of 0 0 means that the video is paused  When rate    0 0 it means that the video is either playing or is stalled    You can find out the difference by observing player time via  func addPeriodicTimeObserver forInterval interval  CMTime  queue  DispatchQueue   using block   escaping  CMTime  - gt  Void  - gt  Any  The block returns the current player time in CMTime  so a comparison of lastTime  the time that was last received from the block  and currentTime  the time that the block just reported  will tell whether the player is playing or is stalled  For example  if lastTime    currentTime and rate    0 0  then the player has stalled   As noted by others  figuring out whether playback has finished is indicated by AVPlayerItemDidPlayToEndTimeNotification

User · Answer

To get notification for reaching the end of an item  via Apple      NSNotificationCenter defaultCenter         addObserver  lt self gt        selector  selector  lt  The selector name  gt         name AVPlayerItemDidPlayToEndTimeNotification        object  lt  A player item  gt      And to track playing you can    track changes in the position of the playhead in an AVPlayer object  by using addPeriodicTimeObserverForInterval queue usingBlock  or addBoundaryTimeObserverForTimes queue usingBlock     Example is from Apple      Assume a property   property  retain  id playerObserver   Float64 durationSeconds   CMTimeGetSeconds   lt  An asset  gt  duration    CMTime firstThird   CMTimeMakeWithSeconds durationSeconds 3 0  1   CMTime secondThird   CMTimeMakeWithSeconds durationSeconds 2 0 3 0  1   NSArray  times    NSArray arrayWithObjects  NSValue valueWithCMTime firstThird    NSValue valueWithCMTime secondThird   nil    self playerObserver     lt  A player  gt  addBoundaryTimeObserverForTimes times queue NULL usingBlock           Passing NULL for the queue specifies the main queue       NSString  timeDescription    NSString   CMTimeCopyDescription NULL   self player currentTime        NSLog   Passed a boundary at      timeDescription        timeDescription release

User · Answer

player timeControlStatus    AVPlayer TimeControlStatus playing

User · Answer

For Swift   AVPlayer   let player   AVPlayer URL  NSURL string   http   www sample com movie mov    if  player rate    0  amp  amp  player error    nil       println  playing       Update  player rate  gt  0 condition changed to player rate    0 because if video  is playing in reverse it can be negative thanks to Julian for pointing out   Note  This might look same as above Maz s  answer but in Swift   player error  was giving me a compiler error so you have to check for error using  player error    nil  in Swift  because error property is not of  Bool  type   AVAudioPlayer   if let theAudioPlayer    appDelegate audioPlayer      if  theAudioPlayer playing              playing          AVQueuePlayer   if let theAudioQueuePlayer    appDelegate audioPlayerQueue      if  theAudioQueuePlayer rate    0  amp  amp  theAudioQueuePlayer error    nil              playing

User · Answer

The Swift version of maxkonovalov s answer is this   player addObserver self  forKeyPath   rate   options  NSKeyValueObservingOptions New  context  nil    and  override func observeValueForKeyPath keyPath  String   ofObject object  AnyObject   change   String   AnyObject    context  UnsafeMutablePointer lt Void gt         if keyPath     rate            if let rate   change  NSKeyValueChangeNewKey  as  Float               if rate    0 0                   print  playback stopped                             if rate    1 0                   print  normal playback                             if rate    -1 0                   print  reverse playback                                     Thank you maxkonovalov

[ios] Check play state of AVPlayer

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