Video Recorders
| Network Video Recorders |  |
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| Digital Video Recorders |  |
DVR vs NVR Comparison
- DVRs utilize proprietary PC based devices containing analog to digital capture cards.
- NVRs utilize ‘off the shelf’ PCs with a standard Ethernet interface for receiving video and controlling PTZ devices.
- The least expensive PC available today running as an NVR can outperform most DVRs.
- Remote video access is accessible thru the actual DVR only.
- NVR technology allows secure, direct access to the video feeds independent of the NVR itself.
- Multiple PCs can be loaded with NVR software for additional capability at no additional licensing cost.
- DVR failures require the DVR manufacturer to service the unit or replace it.
- NVR failures can be repaired or replaced by the user, PC manufacturer or retail point of purchase very quickly.
- DVR performance is basically fixed. It can not be easily augmented and has physical limits. Performance augmentation requires premium cost components sold by the manufacturer.
- NVRs can be replaced and upgraded in a matter of minutes. Performance can be significantly augmented over short periods of time. This allows new technology offerings to be immediately implemented.
- Retired NVRs are completely viable PCs which can be sold or used for other services.
- DVRs require manufacturer approved components and accessories.
- NVRs can implement most any device compatible with the generic PC platform.
- DVR maximum resolution is limited by analog camera technology and capture card design. Native analog resolutions have approached their limits.
- NVR maximum resolution is effectively unlimited. As camera resolutions continue to increase, NVRs can receive and decode the images without modification.
- NVR systems support Power over Ethernet standards. This allows cameras to be cabled with a single connection each, eliminating the need for a power drop.
- NVRs can implement multiple IP Camera devices and most any analog camera or PTZ device simultaneously.
- NVRs can operate via any IP network topology including low cost wireless transmission systems from most any wireless vendor.
- NVR technology is based on multiple standards from cabling to PC operating systems.
- Installation costs of NVR systems can be significantly lower than comparable analog based cabling installations.
- NVR technology has shown long term reliability in Federal prison environments, municipal, educational any most every other professional and private discipline.
