In one example, a method includes: receiving from a first user interface a first input from a first user specifying a first particular instant in a video other than a beginning of the video; in response to the first input, generating by one or more computer systems first data for inclusion in a link to the video, the first data representing the first particular instant in the video and being operable automatically to direct playback of the video at a second user interface to start at the first particular instant in the video in response to a second user selecting the link at the second user interface; and communicating the first data to a link generator for inclusion in the link to the video.