The invention discloses a method and system for preventing historical video playback data from being tampered. A receiving end sends a historical video playback request to a sending end; a sending endreads historical video data according to frames, judges the type of the current frame, adds mark information according to the type of the current frame, and sends the mark information to the receiving end according to a pre-appointed communication encryption algorithm; and the receiving end decrypts the video according to a preset communication encryption algorithm key, judges the type of the decrypted frame, acquires mark information according to different frame types, and judges whether the video is tampered or not according to the acquired mark information. According to the method, file information marks are added to a key frame I, a non-key frame P and a key frame B, mark information is encrypted, and the key frame I, the non-key frame P and the key frame B are checked at a receivingend, so that the playback process is subjected to security check from beginning to end. The method is simple in logic and easy to implement, adopts different principles of double-layer verification, and improves the safety and reliability of historical video playback.

A method and system for preventing historical video playback data from being tampered

The invention provides a real-time asynchronous video analysis method and system. The real-time asynchronous video analysis method comprises the following steps: extracting a plurality of video framesaccording to an obtained video stream, wherein each video frame corresponds to one camera ID; obtaining an identification algorithm model corresponding to the video frame according to the camera ID;putting the video frame into a message queue corresponding to the video frame, wherein the identification algorithm models are in one-to-one correspondence with the message queues; acquiring a messageobtained by encapsulating the video frame from the message queue, and identifying the message according to an identification algorithm model corresponding to the message to obtain an identification result; and pushing recognition results. The method can enable the system to be stable, and the fault rate and the operation and maintenance cost of the system are reduced.

Real-time asynchronous video analysis method and system

The invention provides a monitoring video partition processing method and system. An association model between the monitoring video and the orientation and pose of the monitoring scene does not need to be constructed in advance; according to the method, through the relevance of the monitoring video and the monitoring scene orientation pose on a record collection time axis, clock information synchronization is carried out; therefore, the image frame sets of different monitoring scene orientations can be conveniently, quickly and accurately distinguished and extracted from the panoramic monitoring video, so that subsequent efficient orientation labeling of the panoramic monitoring video is facilitated.

Monitoring video partition processing method and system

The invention discloses a shooting storage method of a tamper-proof multi-camera recorder, and relates to the technical field of tamper-proof design of recorders. The method comprises the following steps: adjusting the real-time error of synchronous shooting of each camera; respectively storing video frame images which are shot by a camera and are stored with camera numbers and recorder system time into corresponding random memories to form exclusive caches; capturing video frame images which are shot at the same time and have the same time length from each exclusive cache to respectively forma frame group queue; and arranging each video frame image in the video frame images of the same frame group queue by a processor of the recorder according to a shooting time sequence, and interpolating frames for the video frame images of the cameras with few frames. According to the method, the cameras with different physical frame speeds are subjected to frame insertion according to the shooting time and the camera with a small number of frames shot in the same time period, so that the frames obtained by the cameras are consistent, the shooting effect of the same camera is achieved, and a file can be directly generated after video compression so as to facilitate later use and management.

Shooting storage method of tamper-proof multi-camera recorder

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Shooting storage method of tamper-proof multi-camera recorder