1. A method comprising: receiving one or more first frames and one or more second frames, wherein the one or more second frames were captured by a front camera of a mobile device during a shooting process while the one or more first frames were captured by a back camera of the mobile device during the shooting process; determining information regarding one or more facial expressions contained in the one or more second frames, wherein the information comprises the one or more facial expressions recognized during the shooting process of the front camera of the mobile device; and causing the information regarding the one or more facial expressions to be associated with at least one of the one or more first frames.