A practical comparison for trade electricians. We cover the technical differences between IP CCTV and analogue HD-TVI systems - cabling, resolution, cost, smart features, and scalability - so you can specify the right system for every job.
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QUICK ANSWER IP CCTV cameras encode video digitally inside the camera and send the stream over Cat5e or Cat6 Ethernet cable to a Network Video Recorder (NVR). Most are PoE-enabled, so one cable carries both data and power. Analogue CCTV cameras transmit a video signal over coaxial cable to a Digital Video Recorder (DVR) and require a separate power run. IP systems deliver smarter features and simpler cabling on new builds; analogue HD-TVI is the cost-efficient choice when coax infrastructure is already in place. |
IP vs Analogue CCTV: Side-by-Side
At-a-glance comparison across the factors that drive the specification decision on trade installs.
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Factor |
IP CCTV |
Analogue CCTV (HD-TVI) |
|---|---|---|
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Cable type |
Cat5e / Cat6 Ethernet |
Coaxial (RG59 / RG6) |
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Power supply |
PoE - single cable carries power and data |
Separate power run required per camera |
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Recording unit |
NVR (Network Video Recorder) |
DVR (Digital Video Recorder) |
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Resolution |
4MP, 5MP, 8MP+ (4K) |
Up to 8MP (4K) on HD-TVI |
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Smart features |
AI motion detection, cross-line alerts, perimeter intrusion |
Basic motion detection on DVR |
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Max cable run |
100m per segment (extendable via switch) |
300-500m on coax without repeater |
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Scalability |
Easy to expand over existing network |
Limited by DVR channels and coax runs |
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Cost per camera |
Higher upfront cost |
Lower upfront cost |
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Install complexity |
Network configuration required |
Familiar plug-and-play over coax |
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Best for |
New builds, commercial sites, future-proofed installs |
Retrofits, existing coax, budget-first jobs |
How Each System Works
Both IP and analogue CCTV capture and record video footage. The core difference is how the signal travels from camera to recorder - and what that means for installation.
IP CCTV (Network Cameras)
An IP camera converts video to a digital stream inside the camera itself. That stream travels over a standard Ethernet cable to a Network Video Recorder (NVR), which stores and manages footage. Most IP cameras are PoE-enabled: a single Cat5e or Cat6 run delivers both the video data and the power supply, eliminating the need for a separate power cable to each camera location.
Each camera holds its own IP address on the local network. Adding cameras, enabling remote viewing, or integrating with access control or alarm systems is straightforward. The NVR typically uses H.265+ compression to reduce storage demand without sacrificing image quality.
- Cat5e or Cat6 Ethernet cabling
- PoE - one cable for power and data
- NVR records and manages footage
- AI analytics on mid-range and pro models
- Remote viewing via local network or internet
- H.265+ compression for efficient storage
Analogue CCTV (HD-TVI)
An analogue camera sends a continuous video signal over coaxial cable to a Digital Video Recorder (DVR), which digitises and stores the footage. Modern analogue systems use the HD-TVI (High Definition Transport Video Interface) standard, which supports resolutions up to 8MP over standard coax. This is a significant leap from the standard-definition analogue CCTV of a decade ago.
Analogue cameras require a separate power supply to each camera location (unless baluns and UTP cable are used). Setup and configuration are familiar to most trade electricians, and coaxial cable runs can reach 300 to 500 metres without signal loss - making analogue the practical choice at distance.
- Coaxial cable (RG59 or RG6)
- Separate power supply required per camera
- DVR records and manages footage
- Up to 8MP (4K) with HD-TVI standard
- Long cable runs - 300-500m without repeater
- Hybrid DVRs accept both analogue and IP inputs
Five Key Differences, Explained
The factors that consistently drive the IP vs analogue decision on a trade job.
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1. Cabling and installation |
IP CCTV Cat5e or Cat6 Ethernet, with PoE powering the camera over the same cable. Most modern commercial and new-build properties already have Cat6 data cabling in place. Maximum run is 100m per segment; a mid-run PoE switch or extender adds another 100m without additional cabling changes. |
Analogue (HD-TVI) Coaxial cable (typically RG59 or RG6) plus a separate power run to each camera. If coax is already installed and in good condition, this is the fastest and most cost-efficient install. Cable runs extend to 300-500m without signal loss. |
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2. Image quality |
IP CCTV IP cameras available from 2MP to 12MP+. Trade installs typically specify 4MP, 5MP, or 8MP. Higher resolutions combined with H.265+ compression mean better detail without disproportionate storage demand. WDR and low-light performance are stronger on higher-end IP models. |
Analogue (HD-TVI) Modern HD-TVI cameras reach 8MP (4K) over standard coax. In practice, image quality differences between a well-specified HD-TVI camera and an IP camera at the same resolution are minimal for most trade applications. |
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3. Smart features |
IP CCTV Mid-range and pro IP cameras include built-in AI analytics: perimeter intrusion detection, cross-line detection, smart motion search, and on some models, facial detection. These run on the camera itself, reducing NVR processing load. |
Analogue (HD-TVI) Standard motion detection is available at the DVR level on most analogue systems. AI-based analytics at the camera level are not generally available. Where smart detection is a client requirement, IP is the correct specification. |
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4. Scalability |
IP CCTV IP systems scale easily. Additional cameras connect to the existing network switch, and higher-channel NVRs can be specified from day one. If a site already has network infrastructure, adding cameras in new areas is straightforward. |
Analogue (HD-TVI) Expansion requires additional coax runs and a higher-channel DVR. Hybrid DVRs - which accept both coax analogue and IP inputs via a network port - provide a practical mid-term upgrade path. |
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5. Cost |
IP CCTV Higher upfront cost per camera and NVR versus equivalent analogue equipment. Total installed cost is often offset by PoE single-cable installation. On larger commercial sites, long-term total cost of ownership typically favours IP. |
Analogue (HD-TVI) Lower upfront cost per camera and DVR. Where coax is already in place - a common retrofit scenario - total installed cost is significantly lower than rewiring for IP. |
Which System Should You Specify?
The right call depends on three things: the existing cabling infrastructure, the client's budget, and the features they need.
Specify IP CCTV when...
- It is a new build with no existing CCTV cabling
- The site already has Cat5e or Cat6 data infrastructure
- The client requires remote viewing via smartphone or offsite monitoring
- AI analytics or smart detection are specified
- The system needs to expand easily over time
- It is a managed commercial site with a local network
- Long-term total cost of ownership matters more than day-one price
Specify Analogue CCTV (HD-TVI) when...
- Coaxial cable is already installed and in good condition
- Budget is the primary constraint
- Camera positions are more than 100m from the recorder
- The job is a like-for-like replacement on an existing analogue system
- Smart analytics and AI detection are not a client requirement
- Network configuration experience on site is limited
- A simple, proven install is the right choice for the site
CCTV Ranges at Harbro Electrical
We stock two trade-focused CCTV ranges - Dahua IP CCTV for new builds and future-proofed installs, and Eagle Analogue CCTV for HD-TVI retrofit and budget-led projects.
Dahua IP CCTV
Trade-grade IP cameras and NVRs from one of the world's leading CCTV manufacturers. Available in turret, bullet, and dome form factors with resolutions from 2MP to 8MP. PoE-enabled across the range, with AI analytics available on pro-tier models.
View Dahua IP CCTV: https://harbroelectrical.co.uk/collections/dahua-ip-cctv
Eagle Analogue CCTV
HD-TVI cameras and DVRs built for retrofit and cost-conscious commercial installs. Transmits up to 8MP over existing coaxial cabling - no rewire required. The practical choice for jobs where coax is in place and IP is not justified.
View Eagle Analogue CCTV: https://harbroelectrical.co.uk/collections/eagle-analogue-cctv
Frequently Asked Questions
What is the difference between IP CCTV and analogue CCTV?
IP CCTV cameras encode video digitally and transmit it over a Cat5e or Cat6 Ethernet cable to a Network Video Recorder (NVR). Analogue CCTV cameras send a traditional video signal over coaxial cable to a Digital Video Recorder (DVR). IP cameras offer higher resolution options, smarter AI features, and PoE single-cable installation. Analogue HD-TVI systems cost less per camera and are the practical choice where existing coax cabling is already in place.
Is IP CCTV better than analogue?
IP CCTV is the stronger specification for new installations: higher resolution options, AI analytics, PoE single-cable wiring, and easier long-term expansion. Analogue HD-TVI is the correct choice for retrofits where coaxial cable is already installed - it delivers comparable image quality at a lower cost without rewiring. Neither is universally better; the right system depends on the infrastructure, budget, and features required for the specific job.
What cable does IP CCTV use?
IP CCTV uses Cat5e or Cat6 Ethernet cable. With PoE (Power over Ethernet), a single cable run carries both the video stream and the power supply to the camera. The maximum recommended run length is 100m per cable segment without an intermediate PoE switch or extender. Many commercial buildings already have Cat6 infrastructure in place, which can simplify IP CCTV installation significantly.
What is HD-TVI CCTV?
HD-TVI (High Definition Transport Video Interface) is a high-definition analogue video standard that transmits resolutions up to 8MP (4K) over standard coaxial cable. It is one of the main HD transmission formats used in modern analogue CCTV, alongside HD-CVI and AHD. The Eagle Analogue CCTV range at Harbro Electrical uses the HD-TVI standard, making it compatible with existing coaxial cable runs while delivering significantly higher image quality than legacy standard-definition analogue systems.
Can I mix IP and analogue cameras on the same recorder?
Yes, with a hybrid DVR. A hybrid recorder accepts both coaxial analogue inputs and IP camera inputs via a network port, allowing you to expand an existing analogue system with IP cameras without replacing all equipment. This is a practical upgrade path for clients with functional coax infrastructure who want to add higher-specification cameras to specific locations without commissioning a full system replacement.
Do I need an internet connection to install IP CCTV?
No. IP cameras and NVRs communicate over a local area network (LAN) and record without any internet connection. The core recording and playback system operates fully offline. An internet connection is only required if the client wants remote viewing via a smartphone app or offsite monitoring. Many trade installs run entirely on a closed local network with no internet connectivity.
What resolution does modern analogue CCTV achieve?
Modern HD-TVI analogue cameras achieve up to 8MP (4K) resolution over standard coaxial cable. This is a major improvement on the standard-definition analogue systems that were the norm ten to fifteen years ago. At matching resolutions, the practical difference in image quality between a HD-TVI analogue camera and an IP camera is minimal for most trade installations. The choice between systems is driven by cabling, features, and cost - not image quality alone.
How far can I run coaxial cable for analogue CCTV?
Standard RG59 coaxial cable supports reliable HD-TVI video transmission up to around 300m. RG6 cable extends this range further. This makes analogue CCTV the practical choice when cameras must be positioned at significant distance from the DVR - particularly on large outdoor sites, industrial premises, or older commercial buildings where rewiring is not viable. Cat6 cable for IP CCTV is limited to 100m per segment without an intermediate PoE switch.