The invention discloses an information processing method and a terminal. The method comprises: an application is started at a terminal, a first operation is obtained, and collection of first medium information is triggered; when the terminal detects an expression change meeting a preset condition in a face area or a user motion change in a collection frame during the first medium information collection process, the obtained changing value as key information is reported to a server; the terminal receives second medium information that is pushed by the server and corresponds to the key information; and video synthesis is carried out on the first medium information and the second medium information according to preset configuration.