Avplayer wont playing video from url

Question

AVPlayer not playing video when I'm trying to play it from url. But when I try download and play video its playing.What I'm doing wrong ?

self.avAsset = AVAsset(URL: NSURL(string: contentURLString)!)
 let item = AVPlayerItem(asset: avAsset)
            avPlayer = AVPlayer(playerItem: item)
            playerLayer = AVPlayerLayer(player: avPlayer)
            playerLayer.frame = self.view.frame
            playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
            cell.videoView.layer.addSublayer(playerLayer)
            self.avPlayer.seekToTime(kCMTimeZero)
            avPlayer.play()

Answer 1

AVplayer won't play remote url video unless server support Http Range: parameter. Otherwise show blank black screen