Recording and play method for monitoring device

Abstract

The invention discloses a recording and play method for a monitoring device, A video recording method for the monitoring device comprises the following steps: after A / V (audio / video) data is synthesized, storing the synthesized data in a recorded-video cache file firstly; and when the recorded-video cache file reaches a preset value, transferring the data to a recording-video file of a memory; and a playback method comprises the following steps of: recording the recording-video file of the memory firstly, then reading the recorded-video cache file when the recorded file is empty. In the invention, through adding an operation of recording a A / V complex data stream in the recorded-video cache file so as to carry out playback, the integrity and timeliness of the A / V data stream reading is achieved. By using the method disclosed by the invention, an A / V data stream which is just recorded can be played by using a monitoring device when a playback function is used, and the difference between the time that an A / V data stream which can be played and the time that the A / V data stream which is real-time previewed is not more than one second. The method is particularly suitable for the real-time operation of the monitoring device, and is beneficial to managers to invoke monitoring videos. The method also can be applied to some special video-recording devices such as devices for special film and TV shooting, and the like.

Description

technical field [0001] The invention relates to a method for recording and playing audio and video, in particular to an instant recording and playback method for monitoring equipment, which can realize instant playback of recorded files. Background technique [0002] Audio and video monitoring equipment is generally connected with external storage devices (such as hard disk, U disk or SD card, etc.), monitors (such as VGA monitors, etc.), audio collection equipment (pickup), video collection equipment (camera / PTZ) and so on. The core functions of audio and video monitoring equipment are mainly on-site preview, video storage and video playback. [0003] On-site preview: directly output the audio and video data collected by the pickup and camera to speakers and monitors to achieve real-time preview of the scene. Video storage: According to the video recording strategy of its equipment, the audio and video data currently being previewed in real time are respectively compressed...

AI Technical Summary

Problems solved by technology

[0006] As can be seen from the above application examples, the playback method in the prior art fails to effectively solve the real-time problem, and the video that can be played back differs from the video previewed on site by nearly one minute, causing problems for managers to call real-time surveillance video in time. The delay in time brings great inconvenience to the monitoring work

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