Multichannel video play and large screen display method

The invention discloses a multi-channel video playing and large-screen display method, which comprises the following steps: (1) starting a main control computer and a player in a computer network cluster; (2) opening multi-channel video playing software, establishing a video file which needs to be played, and selecting an operating mode by the multi-channel video playing software according to information such as configuration parameters, the attribute of the video file, and the attribute of output equipment; (3) entering a blocking mode for the multi-channel video playing software which operates on the player, synchronously playing the video file at the position specified by the main control computer until the main control computer is started to send an instruction of beginning playing, and continuously playing, and outputting images generated by the player to display equipment, and finally outputting the images to a large screen to be spliced into an intact picture; and (4) when the main control computer res