Each bit has a value, which is either 0 or 1. Bytes are used to store digital information. Sectors are the smallest physical storage area on a disk and are usually 512 bytes in size. Let's look at how data is stored on a hard disk or any other storage device. In most cases, after 15 days or a month depending upon the storage available in the DVR/NVR, old data is overwritten by fresh data by default, and thus old data is no longer available. When CCTV footage is recorded, it is saved on a local hard disc, or a cloud server, or an offsite server. Let’s get to know about this in a deeper way. How are deletion and overwriting different? Deletion is always manual (footage intentionally deleted to hide any crime) but previously recorded footage can automatically be removed or lost due to data overwriting once the storage capacity is fully utilized and more recent footage needs to be written. Overwritten information (Due to multiple cycles of DVR recording, previous footage gets overwritten thus becoming lost).Corruption in footage storage media eg.Intentional deletion (Footage that is intentionally deleted to hide any crime).The following are some of the most common causes of damage or loss of recorded footage in CCTV systems from the DVR. Security and surveillance are provided via CCTV cameras and footage is stored on hard drives/media which are fitted in multichannel DVR (Digital Video Recording) Systems. CCTV cameras are put in offices to protect assets and provide constant monitoring. They assist in the surveillance of public places.

Why is CCTV so important in our daily life?ĬCTV cameras are additional eyes for you. Is it really possible to restore a video that has been deleted? What leads to the deletion of data? Can CCTV footage automatically get deleted? How can we get back CCTV recordings that have been deleted or overwritten? What software can you use to swiftly and efficiently recover important videos? These are some of the questions that come to mind when it comes to video footage recorded on DVRs & NVRs.

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