NSUTF8StringEncoding

  //        AVPlayerItem *playerItem=[AVPlayerItem playerItemWithURL:[NSURL URLWithString:[url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
        url = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
        NSURL *url2 = [NSURL URLWithString:url];
        AVPlayerItem *playerItem=[AVPlayerItem playerItemWithURL:url2];
        return playerItem;