Security Camera Recorder System
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NVR vs DVR :
DVR (Digital Video Recorder) and NVR (Network Video Recorder) are both used for recording video surveillance footage, but they differ in how they handle video data and the types of cameras they work with. DVRs are designed for analog cameras and convert the analog video signal to digital format for recording and storage, while NVRs work with digital IP cameras and typically receive pre-processed digital video streams.
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DVR (Digital Video Recorder):
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Installation: Can be easier to install if existing coaxial cabling is already in place.
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Cost: Generally less expensive than NVR systems.
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Limitations: May have lower video quality compared to NVR systems and may not support audio over the same cable.
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Camera Type: Typically used with analog cameras.
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Video Processing: Converts analog video signals to digital format for recording.
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Connection: Uses coaxial cables for connection to cameras. ​
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NVR (Network Video Recorder):
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Camera Type: Works with IP (Internet Protocol) cameras.
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Video Processing: Receives pre-processed digital video streams from IP cameras.
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Connection: Uses Ethernet cables (or Wi-Fi) for connection to cameras.
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Installation: Can be more flexible with cable runs and placement due to Ethernet's flexibility.
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Cost: Generally more expensive than DVR systems, but offer higher resolution and advanced features.
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Features: Supports higher resolution video, remote access, and potentially advanced features like facial recognition.
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In essence:
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If you have an existing infrastructure with coaxial cables and don't need the highest resolution or advanced features, a DVR system might be sufficient.
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If you're looking for higher resolution, more flexibility, and potentially advanced features, an NVR system with IP cameras is a better choice.
This video explains the difference between DVR and NVR systems:
