1. A video categorization method, the method comprising: acquiring a key frame from a video, the key frame comprising an image including a face; acquiring a face feature from the key frame of the video; acquiring one or more face features that correspond to one or more respective picture categories; selecting a picture category to which the video belongs based on the face feature from the key frame and the one or more face features corresponding to the one or more respective picture categories; and assigning the video to the picture category to which the video belongs.