         if let observer = self._playerTimeObserver {
             self._avplayer.removeTimeObserver(observer)
         }
-        self._avplayer.removeObserver(self, forKeyPath: PlayerRateKey, context: &PlayerObserverContext)
         if #available(iOS 10.0, tvOS 10.0, *) {
             self._avplayer.removeObserver(self, forKeyPath: PlayerTimeControlStatusKey, context: &PlayerObserverContext)
         }

            strongSelf.playbackDelegate?.playerCurrentTimeDidChange(strongSelf)
        })
        
        self._avplayer.addObserver(self, forKeyPath: PlayerRateKey, options: [.new, .old], context: &PlayerObserverContext)
        if #available(iOS 10.0, tvOS 10.0, *) {
            self._avplayer.addObserver(self, forKeyPath: PlayerTimeControlStatusKey, options: [.new, .old], context: &PlayerObserverContext)
        }

            }

        } else if context == &PlayerObserverContext {
            
            // PlayerTimeControlStatusKey
            
