Yes, when you create the vline.Client (https://vline.com/developer/docs/vline.js/vline.Client#create), you can pass the div as one of the vline.Options (https://vline.com/developer/docs/vline.js/vline.Options):
vline.Client.create({"serviceId": "your-service-id", "uiVideoPanel": "name-of-div"});