You're installing a new camera system and asking whether camera vendor X will work with NVR vendor Y? The guide explains practical limits and when to verify compatibility.
Basic rule — same brand = certainty
An NVR and cameras from the same vendor guarantee:
- Plug and play — the camera is detected by the NVR immediately
- Full feature use (AI events, motorzoom, two-way audio)
- App integration (single login, list of all devices)
- Unified firmware updates
If you're starting a new install, buy the whole system from one brand. You'll save hours of diagnostics.
ONVIF — the universal standard
ONVIF is an open protocol for camera and recorder communication. If both devices are ONVIF-compatible, they will usually talk to each other — but with limits.
What ONVIF gives you
- ✅ Basic live stream (RTSP)
- ✅ Recording playback
- ✅ Resolution and bitrate setting
What ONVIF does not give you
- ❌ AI person/vehicle detection (proprietary)
- ❌ Motorzoom and PTZ control (often missing)
- ❌ Two-way audio
- ❌ Push notifications
- ❌ Some IR features and night mode
Bottom line: ONVIF is enough for "dumb recording", but for advanced features buy the same brand.
PATRONUM NVR compatibility
Our PRNVR series NVRs support:
- ✅ PATRONUM cameras — full compatibility, plug and play
- ✅ ONVIF profile S/T cameras — basic features
- ✅ Dahua cameras (the OEM manufacturer) — usually fully compatible including AI
- ⚠️ Hikvision cameras — via ONVIF, without AI and advanced PTZ
- ❌ Older analogue cameras — need an AHD recorder (PRXVR), not an IP NVR
Analogue cameras vs IP — fundamental difference
You cannot mix them directly:
- Analogue (AHD, TVI, CVI, CVBS) → only into AHD/XVR recorders (PRXVR series)
- IP cameras → only into NVR (PRNVR series)
Exception: XVR hybrid recorders (some PATRONUM models) — handle AHD and IP simultaneously. Ideal for gradual migration from old AHD to IP.
NVR limits — what to watch
Every NVR has 4 main limits:
1. Number of channels
Maximum number of cameras the NVR processes at once. Typically 4, 8, 16 or 32. Cannot be exceeded (no upgrade).
2. Maximum resolution per channel
For example "8 MP support" means each camera can be max 8 MP (4K). Some NVRs have lower max resolution for more channels — e.g. 8 MP on 4 cameras or 4 MP on 8 cameras.
3. Total bitrateSum of all bitrates from all cameras. Typically 80–160 Mbps for 8-channel NVRs. If you add up cameras and exceed the limit, some will drop in quality.
4. Maximum disk count and capacity
For example "2× SATA, max 16 TB/disk" = max 32 TB storage. Limits are in the NVR documentation.
How to verify compatibility before buying
- Look at the NVR datasheet for channel count, max resolution and bitrate
- Check ONVIF support on the camera (specs: ONVIF Profile S or T)
- Verify the camera's bitrate at maximum resolution
- Calculate whether you'll fit within the NVR total bitrate
- If in doubt, contact technical support — we'll be glad to verify
Recommendations by project size
- 1–4 cameras (house) → 4-channel NVR + 4 cameras of the same brand
- 4–8 cameras (company) → 8-channel NVR with PoE
- 8–16 cameras (industry) → 16-channel NVR + external PoE switch
- 16+ cameras → enterprise NVR (32-channel) or multiple NVRs linked via CMS
For detailed recommendations use our configurator or write to us — we'll put together a working combination.