Video monitoring method

The invention discloses a video monitoring method. The video monitoring method comprises the following steps: S1, reading video flow; S2, decoding the video flow; S3, converting information obtained by processing in the step S2 into a RGB form; S4, drawing a multi-detail rectangular node in a three-dimensional scene, and mapping texture of information obtained in the step S3 to the rectangular node; S5, loading three-dimensional geographic information, moving the rectangular node obtained in the step S4 to a corresponding geographic information space to obtain a two-dimensional image under a three-dimensional geographic scene; S6, removing part, not in a video taper, of the two-dimensional image under the three-dimensional geographic scene obtained in the step S5, and playing. According to the method, the video flow information and the three-dimensional geographic information of the geographic information system are combined for calculation, so that the two-dimensional video is displayed in the three-dimensional geographic information site, 40 low-quality videos and 20 high-quality videos can be simultaneously decoded.