New to IPTV? The terminology can feel like a foreign language. Words like M3U, EPG, Xtream Codes, VOD, and catch-up get thrown around constantly, and it is easy to feel lost. This glossary decodes 50+ of the most important IPTV terms in plain, simple English -- the kind you will actually hear from providers, in forums, and in guides like this one.
Bookmark this page and come back whenever you meet a term you do not recognize.
The Essentials: What You'll Hear Most
| Term | What It Means |
|---|---|
| IPTV | Internet Protocol Television -- TV delivered over your internet connection instead of cable or satellite. |
| M3U | A playlist file (often a URL) that lists your channels. It contains a name and a stream link for each channel. |
| Xtream Codes | A login system (server address + username + password) used by many modern IPTV providers to authenticate playlists. |
| EPG | Electronic Programme Guide -- the on-screen TV schedule showing what is on each channel and when. |
| VOD | Video On Demand -- movies and shows you watch whenever you want, not on a broadcast schedule. |
| Catch-up | Rewatch a programme you missed from earlier in the day, even if it is no longer live. |
Playlist & Content Formats
- Playlist -- A list of channels and their stream addresses in a file or URL.
- M3U8 -- A UTF-8 encoded playlist format, commonly used with HLS streams.
- M3U URL -- A web address that points to an M3U playlist your app can load directly.
- Channel List / Channel Lineup -- The full set of channels your provider offers (see Earnest's channel list).
- Group -- A labelled category in your playlist, e.g. Sports, News, Movies, Kids, UK, US.
- Stream -- The live or on-demand video/audio signal sent to your device.
- Source -- The specific server or feed a channel plays from.
- Favorites -- Channels you bookmark for quick access.
- Logo -- The channel icon shown next to its name in your app.
Streaming Protocols & Codecs
- HLS -- HTTP Live Streaming, a protocol that sends video in small chunks; widely used in IPTV.
- RTMP / RTSP -- Older streaming protocols still used by some sources and cameras.
- UDP / Multicast -- Protocols used in ISP-based IPTV (different from internet IPTV).
- Codec -- Software that compresses video/audio; e.g. H.264, H.265 (HEVC), AV1.
- H.264 (AVC) -- The most common video codec; plays on nearly everything.
- H.265 (HEVC) -- A newer codec that delivers better quality at lower bitrates; needs newer devices.
- AV1 -- A modern, efficient codec growing in support.
- Bitrate -- The amount of data used per second; higher usually means better quality but needs more speed.
- FPS -- Frames per second; 24/25 for movies, 50/60 for smoother sports.
- Container -- The file wrapper holding video and audio, e.g. MP4, MKV, TS.
Picture Quality Terms
- SD -- Standard Definition (480p).
- HD / FHD -- High Definition (720p) and Full HD (1080p).
- 4K / UHD -- Ultra High Definition (2160p), much sharper than 1080p.
- HDR -- High Dynamic Range, for richer, more vivid colors and contrast.
- Upscaling -- Fitting a lower-resolution source to a higher-resolution screen.
App & Device Terms
- IPTV Player / App -- Software that loads your playlist, e.g. IPTV Smarters, TiviMate, SS IPTV.
- APK -- The install file for Android apps; used to sideload players.
- Sideload -- Installing an app from a file instead of an app store.
- Box / Set-top Box -- Dedicated hardware (like an Android box) that runs IPTV.
- Fire Stick -- Amazon's HDMI streaming stick that runs Android-based Fire OS.
- Tizen / webOS / Google TV -- The operating systems on Samsung, LG, and many Android/Google smart TVs.
Network & Performance
- Buffer / Buffering -- Temporary pause while the player downloads enough video; too-frequent buffering means a weak or unstable connection.
- Ping / Latency -- The delay in network response, measured in milliseconds (ms).
- Jitter -- Variation in latency; high jitter causes stutter even on fast connections.
- Mbps -- Megabits per second, the unit for internet speed.
- Packet Loss -- Data packets that fail to arrive; causes glitches and freezes.
- ISP -- Internet Service Provider -- the company providing your broadband.
- VPN -- Virtual Private Network, which encrypts and reroutes your connection.
- IMDb / External player -- Some apps let you open streams in a separate, dedicated video player app.
Subscriptions & Account
- Plan / Subscription -- The package you pay for (e.g. 1 month, 6 months, 12 months).
- IP Lock -- Some providers lock your account to a single IP; others allow multiple.
- MAC Address -- A device identifier; some setups (Mag boxes) bind your account to it.
- Reseller -- A provider that sells access to channels from a larger wholesaler.
- Uptime -- The percentage of time a service is available.
- Gift / Top-up -- Adding credit or extending a subscription.
Guide & Extra Features
- Multi-view / Multi-screen -- Watching several channels at once in a grid.
- Recording -- Saving a live stream to limited storage.
- Timeshift -- Pausing or rewinding live TV (a form of catch-up).
- Adult / Mature channel lock -- Parental controls that restrict certain content.
- EPG from playlist -- When the guide data is embedded in (or linked from) your M3U/Xtream setup.
If you are not sure what format your provider gave you, run your playlist through our M3U parser to see how many channels and groups it contains, and use the setup wizard to get personalised recommendations.
Frequently Asked Questions
What is the difference between M3U and Xtream Codes?
An M3U is a direct playlist of channel links (often a long URL). Xtream Codes is a login system -- you enter a server, username and password, and the app builds the playlist for you. Xtream Codes is generally cleaner to manage and is now the most common method.
What does "catch-up" mean in IPTV?
Catch-up lets you watch a programme you missed after it aired. Instead of being stuck with just the current live feed, you can scroll back and rewatch today's content on that channel.
Is EPG the same as a TV guide?
Yes. EPG (Electronic Programme Guide) is just the technical name for the on-screen TV schedule. A good EPG shows programme titles, times, and often descriptions and images.
Do I need a fast connection for IPTV?
It depends on quality. Aim for 15-25 Mbps for Full HD and 35-50 Mbps for 4K. Test yours free with our IPTV speed test.
Conclusion
Understanding these 50+ IPTV terms puts you well ahead of the average viewer. You now know what an M3U is, what EPG stands for, how Xtream Codes works, and what to do about buffering -- the language of IPTV should no longer confuse you. Keep this glossary handy as you set up your service.
Feeling ready to start? Pick an Earnest IPTV plan and put your new vocabulary to work.
