Many of these cameras operate at IP .10 with the following ports: Focal Length: Smaller focal length (focus) means wider field of viewĪs of the time of writing this, the best value cameras are from AliExpress:.More secure than wireless, less network impact, lower latency, and better quality stream. Allows data and power transfer over a single cable. Outdoor: Nightvision, water, and weather proof, ideally +-40 ambient.H.264: Most common and easy to process video codec.ONVIF and RTSP: Open standards and protocols for interfacing with video streams.Most important features in descending order: This is useful for people who want to monitor their cameras remotely over the internet. NVRs are meant to be network based (ingest pre-encoded video) and are capable of serving the video streams (past or present) to a user frontend (usually a web client). The other variants are ideal for Closed Circuit Television, where the video never leaves the camera and storage. Network Video Recorders (NVR) are different from Video Management Software (VMS), Video Surveillance Storage (VVS), Digital Video Recorders (DVR), and Central Management Software (CMS). Notes for setting up a nvr-surveillance-system
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