Video pre-recording method and cloud storage system

Abstract

The embodiment of the invention provides a video pre-recording method and a cloud storage system. The method comprises the following steps: receiving video stream data collected by target monitoring equipment; according to the identifier of the target monitoring device, determining a pre-recorded storage area in a specified disk corresponding to the target monitoring device to obtain a target pre-recorded storage area; storing the currently received video stream data of the target monitoring device in a target pre-recording storage area in a periodic covering manner; and storing the data in the target pre-recording storage area into a long-period storage area of a video pool of the cloud storage system. According to the method, the pre-recording storage area, corresponding to the monitoring equipment, in the specified disk is used for caching the video of the monitoring equipment, the storage space of the disk is far larger than that of the annular memory, video pre-recording can be carried out according to the actually required time, the data volume of the pre-recorded video is greatly increased, and therefore the duration of the pre-recorded video is prolonged.

Description

technical field [0001] The present application relates to the technical field of data storage, 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 alarm recording, such as motion detection recording. That is, you only need to start streaming recording when an alarm is detected, and stop streaming recording after the alarm is over. However, in the actual use of this function, only the recording during the alarm period is sometimes not enough, because what happened a period of time before the alarm is more important and needs to be recorded. That is, when an alarm occurs, it is necessary to start recording from a period of time (such as 30S) before the alarm occurs until the end of the alarm. This...

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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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