Time-overlapped video stream rapid-positioning method and system for video monitoring

The invention discloses a time-overlapped video stream rapid-positioning method and a time-overlapped video stream rapid-positioning system for video monitoring. The method comprises the following steps that 1, a video stream storage server divides a video storage block, divides storage spaces in video streams, and establishes a segment index table and a time index table for each video stream in the storage space; 2, when positioning a video stream of a time period, a video stream positioning server acquires a segment index number consistent with a condition according to the starting time and the ending time of the time period, positions a target segment index according to the segment index number consistent with the condition, acquires the starting address and the size of the storage space for the video stream from the time index table according to the target segment index, and acquires the video stream according to the starting address and the size of the storage space. According to the method and the system, the problem that video streams of the same time period cannot be played or downloaded is solved.