Angular 2:如何从组件中控制<video>

这应该创建局部变量"videoplayer",提供对视频元素的访问.可以从组件中获取它,例如:

@Component({
    selector: '',
    template: ''
})

export class SomeComponent {

   public videoplayer; // How can I got element object here?

   play() { // I need work with 

@ViewChild('videoplayer') videoPlayer;