Techniques are provided by which the digital delivery of a viewer-requested video along with the best chosen advertisement for the viewer is improved. These techniques may be particularly suited for the short video industry. An innovative video analytics mechanism and user-behavioral analytics mechanism are provided, with which the best match of an exact product on the video for the particular viewer is advertised on the video, while the viewer is viewing the video. Further, techniques are provided that enable the viewer to purchase the product while still in the video, not having to leave the video or the site to complete the purchase.