How long are the surveillance videos of hotels, restaurants and cafes usually kept? Do you want to clean up the updates automatically or manually? I hope the authorities will answer, thank you.

The storage time is hard to say, depending on the size of the other party's hard disk or the adjusted video clarity, usually between one week and one month. The video content of hard disk video recorder does not need to be cleaned up, and it is generally covered circularly. As long as the hard disk is full, the video will be overwritten from the earliest video content date.