Facial detection, recognition and bookmarking in videos

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for facial bookmarking in videos. In one aspect, methods include receiving a digital video comprising video data, processing the video data to detect features indicative of a human face in the digital video, determining, from the video data, a first frame, in which the features indicative of the human face are detected in the digital video, determining first timestamp data corresponding to the first frame, determining, from the video data, a second frame, in which the features indicative of the human face are detected in the digital video, determining second timestamp data corresponding to the second frame, generating an identifier corresponding to the human face, generating a data set including the identifier, the first timestamp data and the second timestamp data, and appending the data set to the video data to provide annotated video data.