DVR (Digital Video Recorder)
Definition
A recorder that accepts analogue camera signals, digitises them internally, compresses the result using a proprietary or standard codec, and writes to an internal hard drive. Common in legacy CCTV installations.
Related terms
- Chain of custody
- The unbroken documentary trail of who held a sealed exhibit, when, and under what seal, from the moment of collection through analysis...
- Multiplexing
- The practice of interleaving frames from multiple camera channels into a single recording file. Each channel gets a share of the total...
- NVR (Network Video Recorder)
- A recorder that receives pre-compressed IP-camera streams over a LAN and stores them, typically in a structured folder on an internal drive....
- Proprietary player extraction
- An acquisition method in which the examiner uses the vendor's own playback software to export footage from a running device. Fast and...
- Write-blocker
- A hardware or software device that prevents any write operations to a storage device during forensic imaging. It ensures the image process...
Explained in
- CCTV and DVR Systems: Architecture and Evidence AcquisitionA recorder that accepts analogue camera signals, digitises them internally, compresses the result using a proprietary or standard codec, and writes to an inter...