Video pre-recording method and cloud storage system

Abstract

The embodiments of the present application provide a video pre-recording method and a cloud storage system. The method includes: receiving video stream data collected by a target monitoring device; determining a pre-recording storage area in a designated disk corresponding to the target monitoring device according to an identifier of the target monitoring device , obtain the target pre-recording storage area; store the currently received video stream data of the target monitoring device in the target pre-recording storage area in a periodic overwrite manner; store the data in the target pre-recording storage area to the cloud storage system in the long-term storage area of ​​the recording pool. Use the pre-recording storage area corresponding to the monitoring device in the designated disk to cache the video recording of the monitoring device. The storage space of the disk is much larger than the ring memory. The video pre-recording can be performed according to the actual time required, which greatly increases the pre-recording. The data volume of the video, thereby increasing the duration of the pre-recorded video.

Description

technical field [0001] The present application relates to the technical field of data storage, and in particular, to a video pre-recording method and a cloud storage system. Background technique [0002] At present, the video pre-recording function of cloud storage is mainly realized by caching video data in memory. In a possible video pre-recording scenario, recording is performed only when an alarm event occurs, which is called an alarm recording, such as motion detection recording. That is, you only need to start the streaming recording when an alarm is detected, and stop the streaming recording after the alarm is over. However, in the process of actually using this function, only the video recording during the alarm is sometimes not enough, because what happened in a period of time before the alarm is more important, and video recording is also required. That is, when an alarm occurs, recording needs to start from a period of time (eg, 30 seconds) before the alarm occu...

AI Technical Summary

Problems solved by technology

[0004] Since the buffer is only 10MB, for example, the front-end equipment connected is a 4Mbps (megabit per second) stream, and the amount of data generated per second is 4Mbps / 8=0.5MB / S, then the buffer can store up to 10MB / s S÷0.5MB=20S (seconds) of data, that is, through the pre-recording function buffered in the memory, limited by the device memory, with the current front-end equipment gradually becoming high-definition, the time that the 10MB buffer can be cached will be Further shortening, that is, the pre-recording time will be limited to about 20S. If you want to increase the pre-recording time, you need to increase the size of the memory buffer, but for each storage device, the memory resources of the machine are extremely limited. If the If the pre-recording time is doubled, the memory needs to be doubled

If the user needs to increase the pre-recording time to the minute level, the solution of buffering in memory will be difficult to meet

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