It has nothing to do with time in principle. Therefore, we believe that under such a case, the recovery of the videos can basically be regarded as impossible.īefore the data area is overwritten, all videos can be recovered. Objectively speaking, the difficulty and cost of recovering physically deleted videos are very high. If the data area is unfortunately selected, then the data will be overwritten. When new data is written, the system will randomly select a free area. At this time, it can be restored with professional recovery tools, and the success rate can reach almost 100%.Īfter data is deleted, it is first marked as a free area. When the data in the data area has not been overwritten, we call it logical deletion. The logically deleted data is still there before being erased. When the operating system performs operations such as reading, writing, deleting, and modifying data, it first performs deletion and modification operations on the index area, which is called a logical deletion. The data area stores physical data in the form of a combination of binary 0 and 1.

The index area is responsible for recording the location, date, and size of the data. The current mainstream partition usually divides the storage of data into two components: the index area and the data area. The storage method of video on the SD card is related to the SD card partition. Generally speaking, when a video is deleted from the SD card, the video still remains on the card.

Recover videos from sd card