What is IPTV? How internet TV actually works

IPTV stands for Internet Protocol Television. It simply means TV that reaches your screen over an internet connection instead of an aerial, a satellite dish or a cable box. If you have watched BBC iPlayer, used a Sky Stream box or opened Pluto TV on a smart TV, you have already used IPTV.

How IPTV works

A traditional broadcaster sends every channel at once, and your TV picks one out of the air. IPTV works the other way round: your device asks a server for one channel, and the server sends just that stream to you, in small chunks, over your broadband.

That has two practical consequences:

• Your internet connection is now your aerial. A slow or unstable connection shows up as buffering, blurry pictures or channels that won’t start.
• Any screen can be a TV. Because the stream is just data, the same service can play on a smart TV, a streaming stick, a phone or a laptop.

The three kinds of IPTV you’ll come across

Live TV

Channels that play on a schedule, just like broadcast TV. You flick between them and see what’s on now. A TV guide, usually called an EPG (electronic programme guide), shows what is coming up.

Video on demand (VOD)

A library of films and series you can start whenever you like. Netflix is pure VOD; most IPTV services mix VOD with live channels.

Catch-up and time-shift

Live channels you can rewind, or programmes kept available for a few days after they aired. iPlayer’s “last 30 days” is catch-up.

Service, app and device: the three parts

People often mix these up, and it is the single most common reason setups go wrong. An IPTV setup has three separate parts:

Part	What it does	Examples
Service (provider)	Owns or licenses the channels and sends the streams	BBC iPlayer, ITVX, Sky, NOW, Zattoo, Molotov, Pluto TV
Player app	Plays the streams and shows the channel list and guide	The provider’s own app, or a general player such as Kodi, VLC or TiviMate
Device	The hardware the app runs on	Fire TV Stick, Android TV box, Samsung or LG TV, Apple TV, phone

Big broadcasters bundle the service and the app together: you install the ITVX app and that’s it. Other providers give you a playlist link (M3U) or an Xtream Codes login (a server address, username and password) and leave you to choose a player app. Our player app comparison covers that choice.

Worth knowing: a player app never comes with channels. If an app or box claims to include thousands of premium channels for free or for a few pounds, the channels are coming from somewhere else, and that is usually where the legal problems start. See Is IPTV legal?

What you need to get started

• Broadband: roughly 10 Mbps per HD stream and 25 Mbps per 4K stream, with headroom for everyone else in the house. Our buffering guide explains how to test this properly.
• A device: most smart TVs made since about 2018 are fine. If yours is older or slow, a streaming stick is the cheapest upgrade.
• A service: free ones (iPlayer, ITVX, Channel 4, Pluto TV, Samsung TV Plus) or paid ones from a licensed provider.
• A TV licence, in the UK: you need one to watch or record live TV on any channel, or to use BBC iPlayer, whatever the device.

IPTV compared with satellite and aerial TV

	IPTV	Satellite / aerial
Installation	None beyond Wi-Fi or a cable	Dish or aerial, often a fitter
Picture quality	Depends on your broadband	Steady, unaffected by broadband
Works in any room	Yes, on any connected screen	Only where the cable reaches
Delay on live sport	Usually 20–60 seconds behind	A few seconds behind
Weather	Unaffected	Heavy rain or snow can interrupt satellite

For most homes the choice now comes down to the channels you want. Once you have picked a service, follow the setup guide for your device.