Case:
Guoan hard disk video recorder, after formatting the hard disk on the video recorder, recording two more videos, and then placing the hard disk on the Dahua video recorder for formatting. Now the monitoring video before formatting.Due to the multiple operations of the customer, the surveillance video time was lost, but because the customer only recorded two videos afterwards, it should be covered very little. After analysis, only about two to three videos were covered. Other videos were lost due to time indexes due to time indexes., It is impossible to determine the specific recording time.
Solution:
Engineers do a full mirror backup of the fault disk to prevent two damage.By analyzing the surveillance video and file system, the start program design is used for data extraction with independent development procedures.After testing, the extracted videos can be played normally.