Methods, systems, and tangible computer-readable memory media are disclosed that relate to a video player configured to play a video file. During playback, the video player, in one embodiment, is configured to access metadata relating to, but separate from, the video file to dynamically display graphical content distinct from the video file. A server system may receive, from a client computer system (e.g., of the video owner), information specifying metadata for the video file. This metadata may specify the display of overlay graphics and/or navigation graphics, the overlay of audio, etc. Additionally, the metadata may specify items needed to perform a process depicted in an instructional video; upon playing the video, the video player may provide one or more purchase links for such items. In one embodiment, a server system may edit the underlying video file—e.g., to include overlay graphics.