handle video completed

completeVideoHandler

-(void)startPlaybackForItemWithURL:(NSURL*)url {

    // First create an AVPlayerItem
    AVPlayerItem* playerItem = [AVPlayerItem playerItemWithURL:url];

    // Subscribe to the AVPlayerItem's DidPlayToEndTime notification.
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];

    // Pass the AVPlayerItem to a new player
    AVPlayer* player = [[[AVPlayer alloc] initWithPlayerItem:playerItem] autorelease];

    // Begin playback
    [player play]

} 

-(void)itemDidFinishPlaying:(NSNotification *) notification {
    // Will be called when AVPlayer finishes playing playerItem
}