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DVR Forensics — Evidence Recovery

Involves imaging DVR hard disk, retrieving audio, video for examination.

Machine

DVR Forensics – Multimedia Evidence Analysis

Forensic Video Analysis is the science of analyzing and comparing videos for legal matters. Digital Video Recorder (DVR) being one of the widely used surveillance systems for image and video frame recording is a reliable source for preliminary investigation. DVR analysis involves imaging DVR hard disk, retrieving audio, video, and metadata for examination.

Digital Video Recorder — Basic Understanding

DVR-Digital Video Recorder is a surveillance system that records videos in a digital format to hard drive or any mass storage service. The cameras in DVR capture images with date, time, location/channel details and is used to record, replay, fast forward videos. DVR can be connected with PCs for live recording and comes with Graphical User Interface for visual capture management.

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History of DVR — Origin of Digital Video Recorder and Improvements

DVR is a successor to Videocassette Recorder (VCR) that used magnetic tapes for recording and replaying videos. The technique was initially used in television where people could record programs and watch them later. Now DVR technology is utilized for Direct-to-Disk recording in Set Top Box (STB), CCTV cameras for live recording, Mobile Digital Media Players (M-DMP) etc.

DVR Forensics

Types of DVR — Wide Arena of DVR Usage and their Types

Digital Video Recording services are optimized in integration with CCTVs, Set-Top-Units, mobile phones and depending upon their usage, they are categorized as:

  • Integrated TV-set Digital Video Recorders
  • VESA Compatible Digital Video Recorders
  • PC-Based Digital Video Recorders
  • Over-the-Air Digital Video Recorders
  • Network Attached Storage (NAS) DVR
DVR Types

 

DVR Disk Imaging – Forensic Evidence Discovery

Disk Imaging

Disk Imaging is a process where contents and structure of a storage device (hard drive, USB, tape etc) is saved in computer file. A sector-by-sector copy of source volume is generated without hampering the file system. During DVR forensics, this kind of technique preserves source of evidence collection while making a replica available for repeated analysis.

Recover Data from DVR – DVR Recovery For Days, Weeks, or Year

DVR Forensics

The name and size of this module may be small but the purpose isn’t. These smart cards are designed with their own Java Card and voltage supply for programming or omitting non-volatile storage. Through our services, we offer you with the choice of getting back these deleted entries from a SIM card including; text messages, call logs, and contact details of a mobile device, etc.