Check out this update to TrueView ads this gives brands a way to get response from viewers.

TrueView for action makes your video ad more actionable by displaying a tailored call-to-action during and after your video. This call-to-action can be adapted to your specific use case, like “Get a quote,” “Book now” or “Sign up.” Since this is an easy add-on to your video, you can drive performance on top of all the benefits of showing your video to an engaged audience. This is especially advantageous for brands that offer products or services with high consideration, like financial services, automotive, or travel. TrueView for action can help you move your customers along the path to purchase by encouraging actions like scheduling an appointment or requesting more information.

Source: Inside AdWords: Google delivers new app and video ad innovations for the mobile-first world