How does IPTV work?

How does an IPTV channel get from the provider to your TV?

Every IPTV channel takes the same five-step trip, and the whole trip takes only a few seconds. If you want the basics first, start with what IPTV is, then come back here.

1. The provider's servers. A TV channel is received, compressed into a digital video file and sent out by servers in a data centre. This is also where the channels come from in the first place, which we explain in where IPTV providers get their channels.
2. The internet. The servers cut the video into many small packets every second and send them across the internet, the same way a video call travels.
3. Your internet provider. Bell, Rogers, TELUS, Vidéotron, Cogeco or a smaller provider carries the packets to your home like any other data.
4. Your router. It passes the packets to your TV or stick over Wi-Fi or an Ethernet cable.
5. The app on your device. The IPTV app puts the packets back in order, decodes the video and shows it on screen.

The app keeps a few seconds of video in reserve, called a buffer. If the packets slow down for a moment, it plays from the buffer and you notice nothing. If the buffer runs empty, the picture freezes: that is buffering, and the weakest link, very often weak Wi-Fi, is usually the cause. Our guide on how to fix IPTV buffering goes through each link.

One detail surprises people. Bell Fibe TV and TELUS Optik TV are IPTV too, but they send TV over their own private network straight to the box they rent you, so their TV traffic never crosses the open internet. Independent IPTV services, which you watch in an app, use the public internet, so your home connection matters more.

How do live TV, on demand and catch-up work?

All three use the same path to your TV, but the server sends something different in each case.

• Live channels. The server receives the channel non-stop and sends the same stream to every viewer at once. Because the video is compressed and buffered on the way, live IPTV usually runs several seconds behind the over-the-air signal. During a big game, your neighbour on cable may cheer a goal before you see it.
• Video on demand. A movie or episode is a file stored on the server. It starts from the beginning when you press play, and you can pause, rewind or skip, because nothing is live.
• Catch-up. On some channels the server keeps a recording of recent hours or days. You pick a show that already aired in the TV guide and it plays from the start. See how IPTV catch-up works.

The TV guide (EPG) is separate again: it is a schedule file the app downloads and matches to your channels, so the guide can be empty for a few minutes while the channels already play.

What are HLS and MPEG-TS, in plain words?

HLS and MPEG-TS are the two common ways an IPTV stream is packed for the trip, and most IPTV apps can play both.

• MPEG-TS (transport stream, often shown as TS) sends the video as one continuous flow, the same format digital TV broadcasts have used for years. It starts quickly and has little delay, but a short drop in your connection shows up quickly as a stutter.
• HLS (HTTP Live Streaming) is a format Apple created. It cuts the video into short chunks of a few seconds each and lists them in a small playlist file that the app keeps reloading. It copes better with a connection that goes up and down, which is why phones and Apple devices like it, but it can add a little delay. Apple describes it on its HTTP Live Streaming page.

Some apps let you switch between TS and HLS in their settings. If one stutters on your device, try the other: we compare them in TS or HLS on a Firestick.

What is an IPTV login, and how does the app know what you paid for?

An IPTV login is the key that tells the app which provider to connect to and proves you have an active plan. There are three common kinds:

Xtream Codes is named after the server software that made this login style common, and almost every IPTV player accepts it. Each time you open a channel, the provider's server checks your username, the end date of your plan and how many screens are already playing.

The login belongs to your subscription, not to the app. You can type the same login into a different app or on a new TV, and your channels follow you.

What does all this look like when you set up IPTV at home?

In practice you install one app, type in your login and start watching, which usually takes about 10 minutes. Check that your internet gives about 10 Mbps for each screen in Full HD, install a player such as TiviMate on a Fire TV Stick 4K Plus, enter the login from your provider's email, and give the TV guide a few minutes to fill in.

With IPTV Nord, the login arrives by email and in Live Chat once your Interac e-Transfer is received, usually 15 to 30 minutes later during support hours, and it plays on 1 to 5 screens at once depending on your plan. Our installation guides show every step for each device.