Surveillance Video Recovery in Digital Forensics
Before getting closer to the digital forensics by surveillance video, we would get started with looking into what a surveillance video system is.
Surveillance Video System
Most video recordings from CCTV or surveillance cameras are saved using DVRs (Digital Video Recorder) or NVRs (Network Video Recorder).
These are the general 2 types of surveillance video systems: DVR and NVR.
- DVR: The DVRs evolved from the older VCR models, while NVRs are the next best things in video recording technology. DVRs offer D1 resolution (about 720 x480 pixels), the traditional video quality used in closed-circuit television systems.
- NVR: NVRs, on the other hand, can record videos in 1080p (about 1920 x1080 pixels), which is considered to be high definition, so technically, they offer a significant improvement in video quality over a DVR system.
Interestingly, both systems save videos in external hard drives, USB Sticks, and SD cards from which the forensic investigators can retrieve videos.
This means Data Recovery System would definitely have a good performance when it comes to the data issues(Video files) within DVRs and NVRs, though it’s not specially designed for managing surveillance video files.
Surveillance Video Recovery in Digital Forensics
Owing to technological advancements, video footage from digital cameras and other devices capable of creating videos is increasingly admissible in court as sources of evidence. Videos are used as evidence in crime investigation because they provide vital forensic evidence items that can provide links to hitherto disjointed pieces of evidence.
For instance, closed-circuit television (CCTV) systems are widely used at strategic locations like banks, stores, malls, parks, and traffic intersections. Where necessary, video evidence would be recovered from these recordings to aid an investigation or build an existing case. There is a catch with video evidence.
For a video to be admissible as evidence in digital forensics, the quality has to be of a certain standard. Poor-quality videos will adversely affect any investigation where it is used. In some cases, it might not even be admissible as evidence in a court of law.
So though the video surveillance provides potential clues in one way or another, how to scientifically and successfully utilize them and submit as admissible evidence has a vital link to their quality and availability, which deems their video file recovery being one of the requirements.
Use SVR for Hikvision to recover surveillance videos
As we all know, most of the DVR & NVR recorders are under Hikvision models.
It just makes every sense to deeply support the video recovery for Hikvision surveillance video recorders as a digital forensic supporting tool.
SVR(Surveillance Videos Recovery) is a surveillance video recovery tool specifically designed for Hikvision’s video recovery (Including DVR & NVR).
The SVR eliminates almost every technical issue like overwriting, mis-formatting, mis-deletion, and etc. Regardless of the video files’ circumstance, it provides the required functionality to support and facilitate the full recovery of Hikvision surveillance videos.
Here’s how SVR for Hikvision helps forensic investigators get over challenges in Hikvision surveillance video recovery.
- Reconstructing Fragmented Videos
One of the major issues during the surveillance video recovery is missing or fragmented videos from the source.
The SVR for Hikvision aptly corrects the issue. by proceeding with video files fragmentation reconstruction. Moreover, it could also extract and play the reconstructed videos.
Sometimes the process of recovering surveillance videos can be affected by the restriction of access to the disk of the video source. SVR for Hikvision eliminates this problem as it bypasses any passwords and allows the recovery of video data directly from the faulty surveillance video recorder.
- Support Video Recovery across Situations
Video evidence can get damaged or lost as a result of multiple reasons. With the SVR software, any surveillance video can be easily effectively recovered regardless of the situation in which it was damaged or lost.
- Great Video Distribution Analysis
With SVR for Hikvision, it is easy to speedily analyze the distribution of the surveillance video on a disk and select a specific disk sector for scanning. This ultimately saves tons of time for the digital forensic investigators from scanning the surveillance video before going over it as evidence.
Once the surveillance video recorders have been scanned, the SVR system automatically saves the scan history. This way, the user can directly view the scan results without repeated scans of the surveillance video.
It’s always aiming to particular date and time within video files for most case cracking.In most cases, without / incorrect timestamps not be admissible in court as video evidence. Luckily, now forensic investigators can easily correct time and date by the software after the video has been recovered.