Video file processing method and system, and video proxy system

The invention discloses a video file processing method, a video file processing system and a video proxy system. The method comprises the following steps of: receiving a video request from a mobile terminal, wherein the video request comprises the terminal equipment information of the mobile terminal; querying video strategy parameters corresponding to the terminal equipment information from a preset equipment information strategy; and searching for a video file matched with the video strategy parameters from pre-stored video files according to the queried video strategy parameters, and transmitting the video file to the mobile terminal. By the method and the systems, various mobile terminals can obtain high-definition and high-smoothness video playing experiences in various networking modes.