May 17, 2024

How to Recover Overwritten CCTV Footage – DVR Lost Data

Recovering overwritten CCTV footage can be simple, depending on the timeliness of your actions and the age of the surveillance video. However, it is essential to understand the safe and efficient process of recovering overwritten CCTV footage, as it holds significant value for both businesses and individuals. In the following sections, we will guide you through this passage on how to recover overwritten CCTV footage and discuss the factors that can impact the success rate of this process.

What is the meaning of overwritten files? 

Surveillance videos play a crucial role in investigations and provide valuable evidence when certain crimes take place. What is the meaning of a video being overwritten? Overwrite refers to the process of replacing or updating existing data with new data when a file or directory is modified. When data is overwritten, fresh information is recorded on top of the previous data. New information is recorded using the unused file system clusters. This occurs when the user consistently utilizes the disk for different tasks and creates new files that overwrite the existing ones. 

Is it Possible to Recover CCTV Footage that has been Overwritten?

Indeed, it is possible to recover CCTV footage that has been overwritten. However, it is crucial to take prompt action in order to increase the chances of a successful recovery. To effectively recover overwritten CCTV footage, it is recommended to utilize a reliable data recovery application. This software will scan the storage drive where the surveillance videos were stored, allowing for successful retrieval.

There are several factors that can lead to data loss, including logical corruption of the drive, storage drive failure, malware, and accidental deletion. Typically, CCTV camera systems utilize a digital video recorder (DVR) device to receive and store footage captured by the camera. DVR systems have the capability to automatically remove videos that exceed a specific date. As changed by the system’s settings.
This feature allows the system to optimize storage space usage effectively.

The timing of the data recovery process is crucial when it comes to DVRs and the chances of successful data retrieval. Furthermore, it is highly advised to consistently back up previous videos onto an alternative storage device or the cloud to facilitate easier retrieval.

The storage drive itself will also impact the process of recovering overwritten data from the CCTV system. While many systems utilize HDDs or memory cards for storing the footage, there are also those that opt for SSDs as a storage solution. Recovering data from SSDs can be more challenging due to a feature known as TRIM.

If your files have been physically damaged, it is strongly advised that you seek the assistance of a professional data recovery service to retrieve them. Trying to recover overwritten CCTV footage and files yourself can actually make the situation worse.

Can deleted CCTV footage be recovered?

Recovering deleted CCTV footage can be a complex process that depends on various factors. These factors include the type of storage being used, the condition of the device, the presence of any file corruption, and more.

Nevertheless, in most cases, it should be feasible to carry out CCTV video recovery.

Each video file captured and stored by your CCTV system contains metadata, which consists of fragments of information that persist even after a file is deleted. If the metadata remains intact, CCTV data recovery software can locate and piece together that metadata to restore the original file.

Step 1. Create a BLR Tools Byte-to-Byte Backup

By performing a byte-to-byte backup, you can prevent any further data overwriting on the storage device. The backup is basically a digital copy of the entire hard disk or storage device. Once the drive has been created, you have the option to reconnect it to the DVR. This allows you to conveniently scan the disk image instead of relying on the physical hard drive.  

To generate a disk image using BLR Tools, simply follow these steps:

  1. Please download and install BLR Tools.
  2. Please connect the drive that contained the CCTV footage to your computer.
  3. Access BLR Tools and select the Drive Backup option from the left navigation pane. BLR Tools offers a drive backup option.
  4. Choose the appropriate storage device and click on byte-to-byte backup. Screen for byte-to-byte backup in BLR Tools.
  5. Select a location to save the disk image. Make sure you have enough available storage space on your computer that matches the capacity of the CCTV footage drive. Please click OK. Backup parameters for a byte-to-byte backup.
  6. BLR Tools is capable of generating the disk image for you. The duration of the process will vary depending on the size of the drive and the specifications of your computer. The disk picture made the screen.

Step 2: Scan disk picture. BLR Tools Use

Next, we will utilize BLR Tools to scan the disk image (generated in the previous step) in order to recover overwritten CCTV footage. 

  1. Start BLR Tools and choose Data Recovery. Click Attach disk image and choose your produced disk image. Tab for BLR Tools data recovery.
  2. BLR Tools will display the disk image as storage. Select it and select Find lost data. BLR Tools’ Lost Data Search.
  3. Click Review recovered items to see all recoverable data or Video to see just video files on the following screen. Review BLR Tools and discover data on the screen.
  4. BLR Tools lists recovered files. Please double-click a file to preview it. Use the checkbox to pick a file. Select the overwritten CCTV videos and click Recover. List of BLR Tool recoverable files.
  5. Select a file recovery location and click OK. The BLR Tools recovery destination selection screen.
  6. BLR Tools recovers specified files. Data recovery in BLR Tools is complete.

Video and CCTV File Backup: Bonus Tip

Backing up your data is the most important step in safeguarding against data loss and the resulting inconvenience. You have the option to transfer your videos to a different drive or store them on cloud platforms like Google Drive or OneDrive. If you’re looking for a convenient way to automatically back up your files, BLR data recovery tool is a great option. This backup and restore software allows you to effortlessly back up your desired files and folders to an external hard drive or other drives. 


By taking prompt action and utilizing a reliable data recovery tool, you can effectively recover overwritten CCTV footage without any risk. However, it is highly recommended to consistently transfer your previous CCTV footage to an external storage drive for safekeeping.

Recover Overwritten CCTV Footage: Recover Deleted DVR Data
Article Name
Recover Overwritten CCTV Footage: Recover Deleted DVR Data
recover overwritten CCTV footage? Recovering CCTV files after deletion? You can swiftly recover important videos using BLR data recovery tool

One thought on “How to Recover Overwritten CCTV Footage – DVR Lost Data

  1. Recovered Files Won't Open: Explain Cause & Solution

    […] When a new file overwritten an old one, most of the time, you can’t open the old file or get it back with regular file recovery software. You may still have one last chance, though, if you restore it from a previous version or use System Restore to restore a file that was accidentally deleted. You can find a thorough guide on how to do recovering overwritten data. […]

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