Every hobby has its own language, and cord-cutting is no exception. If you’ve ever nodded along while someone mentioned “transcoding” or “EPG” without actually knowing what they meant, this is the page to bookmark — every term explained in plain English, with links to full guides where you want to go deeper.
⚡ Quick Answer
This glossary covers the terms you’ll actually run into while setting up streaming devices, troubleshooting playback, and understanding local channel access — organized by category so you can jump straight to what you need.
Streaming & Devices
- IPTV
- Short for Internet Protocol Television — TV delivered over a regular internet connection instead of cable or satellite. The same underlying delivery method used by services like YouTube TV and Hulu + Live TV.
- Streaming Device
- Hardware like a Fire TV Stick, Roku, or Apple TV that connects to your TV and runs streaming apps. See our device comparison guide for picking one.
- Sideloading
- Installing an app from outside an official app store, usually via a tool like Downloader. Common on Fire TV, which doesn’t include the Google Play Store. Our Fire TV guide covers this in detail.
- APK
- The file format Android apps come in. When you sideload an app, you’re typically installing an APK file directly rather than through an app store.
- Smart TV
- A television with built-in streaming apps and internet connectivity, no separate device required — though app selection is often more limited than a dedicated streaming box.
Playback & Quality
- Buffering
- When playback pauses to load more data. Almost always a speed or Wi-Fi distance issue — see our troubleshooting guide for fixes.
- Bitrate
- How much data streams per second of video. Higher bitrate generally means better picture quality, but also requires more internet bandwidth to play smoothly.
- Codec
- The compression method used to shrink video files for streaming (like H.264 or AV1). Different devices support different codecs, which occasionally causes playback errors on older hardware.
- Transcoding
- Converting video from one format or quality to another in real time — for example, a server converting 4K footage down to 1080p on the fly for a slower connection.
- 4K / HDR
- 4K refers to a higher resolution than standard HD. HDR (High Dynamic Range) refers to improved contrast and color range. Both require a supporting TV and enough internet bandwidth — typically 25–50 Mbps for smooth 4K.
Playlists & Players
- M3U / M3U8
- A playlist file format that tells a player app where to find video streams. Apps like VLC and Stremio can open an M3U playlist directly.
- Xtream Codes
- A login format (server URL, username, password) some providers use instead of a plain M3U link, supported by player apps like TiviMate and Smart IPTV.
- EPG
- Electronic Program Guide — the on-screen schedule showing what’s airing now and next on each channel, similar to a traditional cable guide.
- MAC Address
- A unique hardware identifier for a device’s network connection. Some player apps, like Smart IPTV, use it to activate a playlist to a specific device.
Local Channels & Sports
- RSN
- Regional Sports Network — a cable channel holding exclusive local broadcast rights for a team within a defined territory. See our full RSN blackout guide.
- Blackout
- When a game is unavailable in a specific territory because local broadcast rights are exclusive to another network. Not a technical glitch — it’s a licensing restriction.
- OTA (Over-the-Air)
- Free broadcast TV picked up with an antenna — no subscription required, using the public airwaves regulated by the FCC. Covers major networks like ABC, CBS, NBC, and FOX. See our free antenna guide.
- ATSC
- The technical broadcast standard used for digital over-the-air TV in the U.S., maintained by the Advanced Television Systems Committee. ATSC 3.0 (sometimes marketed as “NextGen TV”) is the newer version rolling out in many markets, offering better picture quality and reception.
Network & Setup
- 2.4GHz vs. 5GHz Wi-Fi
- Two Wi-Fi frequency bands. 2.4GHz reaches farther through walls but is slower; 5GHz is faster but has shorter range. Streaming devices generally perform better on 5GHz when signal strength allows.
- Ethernet
- A wired network connection, generally more stable than Wi-Fi for streaming since it isn’t affected by wireless interference or distance from the router.
- VPN
- A tool that routes your internet connection through another server, often used for privacy. Using one to misrepresent your location to bypass content restrictions violates most streaming services’ terms — not something we cover or recommend.
Quick Questions People Ask
What’s the difference between IPTV and regular streaming apps?
Not much technically — both deliver video over the internet. “IPTV” more often refers to live-TV-style playlist-based services specifically, while “streaming apps” usually means on-demand platforms like Netflix.
Do I need to understand all of this to just watch TV?
Not at all — most people never need to know what a codec is. This glossary is here for when something breaks or you’re comparing options, not a prerequisite for normal use.
What’s the most important term to know for troubleshooting?
Buffering and bitrate — understanding that playback issues are almost always about available bandwidth solves most confusion right away.
Final Thoughts
None of this is required knowledge to enjoy streaming — but the next time buffering hits mid-show, or a provider mentions “Xtream Codes” like you should already know what that means, you’ll have this to fall back on.
Looking for a full setup walkthrough instead? Our full tutorials library covers every major device from scratch.