Recover Overwritten CCTV Footage

How to Recover Overwritten CCTV Footage

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Written by Manuviraj Godara Manuviraj Godara Staff Writer • 65 articles Manuviraj Godara recently joined the staff writers team at Handy Recovery Advisor, having initially contributed as a writer in 2021. His primary expertise lies in resolving data issues on Windows machines, and he has recently begun to explore Apple-related topics. LinkedIn Approved by Andrey Vasilyev Andrey Vasilyev Editor Andrey Vasilyev is an Editorial Advisor for Handy Recovery. Andrey is a software engineer expert with extensive expertise in data recovery, computer forensics, and data litigation. Andrey brings over 12 years of experience in software development, database administration, and hardware repair to the team. LinkedIn

Recovering CCTV footage is a relatively simple task, depending on how quickly you act and how old the surveillance video was. Nonetheless, it’s crucial to know how to recover overwritten CCTV footage safely and quickly because of how important it is for enterprises and home users alike. In the sections below, we’ll take you through the overwritten CCTV file recovery process, as well as the factors that affect the success rate of the process.

Can You Retrieve Overwritten CCTV Footage?

Yes, it’s possible to recover overwritten CCTV footage, but you should act quickly to maximize the success rate of the recovery process. The best way to retrieve overwritten CCTV footage, is to use a good data recovery app to scan the storage drive that contained the surveillance videos.

The data loss itself can be caused by various factors such as logical corruption of the drive, storage drive failure, malware, and accidental deletion. Most CCTV camera systems use a digital video recorder (DVR) device that receives and stores footage from the actual camera. DVR systems automatically delete videos that are older than a certain date (depending on how the system is configured). This helps the system manage storage space more efficiently.

Due to how DVRs work, the data recovery chances depend on how soon you begin the data recovery process as. Additionally, it’s always recommended that you regularly back up old videos to a different storage device or the cloud, for easier recovery.

The storage drive itself will affect the CCTV overwritten data recovery process too. While most systems use an HDD, or a memory card to store the footage, some also store it on SSDs. It’s tricker to recover data from SSDs because of a feature called TRIM.


In case of physical damage, it’s highly recommended that you contact a professional data recovery service to recover your files. Attempting DIY overwritten CCTV file recovery, in this case, can exacerbate the damage.

How to Recover Overwritten CCTV Footage

As mentioned earlier, the best way to recovery overwritten CCTV footage, is to use a video recovery program. Naturally, you should use a good CCTV data recovery software to do this, keeping in mind the importance of CCTV footage.

In our tutorial, we’ll use Disk Drill Data Recovery, a highly capable CCTV and DVR data recovery software. Not only does it support all major storage device types like HDDs, SD cards, SSDs, and USB drives, it also recognizes CCTV video formats such as AVI, MOV, FLV, and more. Disk Drill is also compatible with all major file systems that include NTFS, FAT32, HFS+, EXT2, and EXT3, among others.

Windows users can take advantage of Disk Drill’s free trial that lets them recover up to 500 MB of data at no cost.

To recover overwritten CCTV footage using Disk Drill, you first need to create a disk image of the storage drive and then scan it for missing data. Here is how to do this:

Step 1. Create a Byte-to-Byte Backup Using Disk Drill

A byte-to-byte backup ensures that no more overwriting of data will take place on the storage device. The backup is essentially a soft copy of the entire hard disk or storage device. After creating it, you can connect the drive back to the DVR, because you can scan the disk image instead of the physical hard drive.

To create a disk image using Disk Drill, follow these steps:

  1. Download Disk Drill and install it.
  2. Connect the drive that contained the CCTV footage to your computer.
  3. Open Disk Drill and click the Drive Backup option in the left navigation pane.Disk Drill Drive Backup option.
  4. Select the relevant storage device and click Byte-to-byte backup.Byte-to-byte backup screen in Disk Drill.
  5. Choose a destination to save the disk image. Ensure that you have free storage space on your PC equivalent to the size of the CCTV footage drive. Click OK.Byte-to-byte backup parameters.
  6. Disk Drill will create the disk image. The process may take time, depending on the size of the drive as well as your computer’s specs.Disk image created screen.

Step 2. Scan the Disk Image Using Disk Drill

Now, we’ll use Disk Drill to scan the disk image (created in the previous step), to retrieve the overwritten CCTV footage:

  1. Open Disk Drill, and ensure you’re on the Data Recovery tab. Click on Attach disk image and browse for the disk image you had created.Disk Drill data recovery tab.
  2. The disk image will show up as a regular storage device on Disk Drill. Select it and click Search for lost data.The Search for lost data option in Disk Drill.
  3. On the next screen, click Review found items to view all types of recoverable data, or simply click on Video to only view video files.Review found items screen in Disk Drill.
  4. Disk Drill will display a list of recoverable files. Here, double-click on a file to preview it. You can select a file using the checkbox next to it. Once you’ve selected the overwritten CCTV videos you want to retrieve, click on Recover.List of recoverable files in Disk Drill.
  5. Select a recovery destination for the files and then click OK.Recovery destination selection screen in Disk Drill.
  6. Disk Drill will recover the selected files.Data recovery complete screen in Disk Drill.


Yes, it’s absolutely possible to recover overwritten CCTV footage. But, you need to act quickly to prevent further permanent overwriting of the data, and use a good data recovery program to scan the drive.

Here is an easy guide on how to recover overwritten CCTV footage from your DVR:

  1. Download and install Disk Drill.
  2. Connect the CCTV drive to your PC.
  3. Open Disk Drill, select the drive and click Search for lost data.
  4. Click on Review found items.
  5. Select the required overwritten videos and click Recover.
  6. Select a recovery destination and click OK.

Yes, you can easily recover old CCTV footage using a good data recovery program like Disk Drill. If there is physical damage to the drive, it’s better to make use of a professional data recovery service.

Besides Disk Drill, here are some other programs you can use to recover old CCTV footage:

Old CCTV footage gets deleted automatically to make space for the newest recordings. Thus, it’s best to regularly backup old surveillance videos.


Quick action combined with the use of a good data recovery program ensures that you can safely recover overwritten CCTV footage. But, it’s still best to regularly back up your old CCTV footage to another external storage drive.

About article

This article was written by Manuviraj Godara, a Staff Writer at Handy Recovery Advisor. It was also verified for technical accuracy by Andrey Vasilyev, our editorial advisor.

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