LoginVC.m

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view setBackgroundColor:[UIColor whiteColor]];
    _videoBackgroundView = [[VideoView alloc] initWithFrame:self.view.frame];
    [self.view addSubview:_videoBackgroundView];
    [self setupViews];
}

-(void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [self.videoBackgroundView playVideo];
}

-(void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    [self.videoBackgroundView pauseVideo];
}