IPTV Glossary: Complete A-Z Dictionary 2026

Ultra-High Definition video at 3840 × 2160 pixels — four times the resolution of 1080p Full HD. The standard for premium streaming on HelixStream.

Android Package Kit — the installer file format used by Android, Android TV and Firestick. IPTV apps are typically distributed as APKs sideloaded onto the device.

The maximum data transfer rate of an internet connection, measured in Mbps. 4K IPTV streams typically need 15–25 Mbps of sustained bandwidth.

The amount of data used to encode one second of video. Higher bitrates produce sharper images. A 4K HDR stream usually runs between 15 and 25 Mbps.

A feature that lets you replay live broadcasts after they originally aired — typically up to 7 days back — without needing a DVR.

Content Delivery Network — a globally distributed server network that delivers video close to the viewer for minimal latency and zero buffering.

The algorithm that compresses and decompresses video data. Modern IPTV uses H.264 (AVC) and H.265 (HEVC); newer feeds may use AV1.

Domain Name System — translates human-readable domains like helixstream.net into IP addresses. A bad DNS can be the difference between zero buffering and constant stalls.

An object-based surround sound format that places audio in 3D space. Premium IPTV feeds carry Atmos tracks for movies, series and sports.

Digital Video Recorder — records broadcasts for later playback. IPTV replaces traditional DVR with catch-up + VOD.

Electronic Program Guide — the on-screen TV schedule showing what's airing on each channel, now and later. HelixStream ships a full 7-day EPG.

Full HD — video at 1920 × 1080 pixels. The standard quality for most live IPTV channels.

Amazon's HDMI streaming stick. One of the most popular devices for IPTV because of its low price, sideloading support and Alexa voice search.

High Efficiency Video Coding — the dominant 4K codec. Encodes 4K at roughly half the bandwidth of older H.264 with the same visual quality.

High Dynamic Range — wider contrast and a broader colour gamut so highlights, shadows and skin tones look more natural. Common formats: HDR10, HDR10+, Dolby Vision.

HTTP Live Streaming — Apple's adaptive streaming protocol that breaks video into small .ts segments delivered over standard HTTPS. Most IPTV streams today are HLS.

Internet Protocol Television — TV delivered over the internet instead of cable or satellite. Channels stream as IP packets to apps on your devices.

The management dashboard used by IPTV providers and resellers to create lines, manage credits, view stats and sell to end-users.

Internet Service Provider — the company that supplies your broadband connection. Some ISPs throttle video traffic; HelixStream's CDN minimises that.

The delay between an event happening live and it appearing on your screen. Low-latency IPTV keeps sports feeds within a few seconds of broadcast.

A plain-text playlist format containing channel names and stream URLs. The default playlist format for almost every IPTV service.

A unique hardware identifier for a device, formatted like 00:1A:79:XX:XX:XX. Some IPTV portals (especially MAG / Stalker) authenticate by MAC address.

A line of small Linux-based set-top boxes (MAG 254, 322, 420, 524) popular for IPTV. Authenticate via MAC address into a Stalker portal.

The software layer that connects your device to the IPTV stream library — handles authentication, EPG, channel lists and billing. Stalker and Xtream Codes are the two dominant middleware platforms.

A network technique that sends a single stream to many viewers simultaneously, used inside ISP networks to deliver live TV efficiently.

The round-trip time, in milliseconds, between your device and the streaming server. Lower ping means faster channel switching and lower latency on sports.

A list of channels and stream URLs delivered to your IPTV app — typically as an M3U file or a portal URL. Determines what you can watch.

The endpoint a MAG / Stalker box connects to in order to receive its channel list and EPG. Example format: http://provider.tld/c/.

A partner who buys subscription credits in bulk from an IPTV provider and resells them to end-customers. HelixStream runs a reseller programme for businesses.

Real-Time Messaging Protocol — an older Adobe streaming protocol still used to push live feeds from a broadcaster into a CDN, even though HLS is preferred for delivery.

Middleware originally written for MAG boxes that powers a huge number of IPTV deployments. Authenticates by MAC address and serves channel lists, EPG and VOD.

Set-Top Box — any standalone device that decodes a TV signal for a television. MAG boxes, Firesticks and Apple TVs are all set-top boxes.

The direct address of a single channel or VOD file. Inside an M3U playlist, each entry contains a stream URL that the player opens to start playback.

Pausing, rewinding or fast-forwarding a live broadcast. HelixStream's catch-up + time-shift lets you start a live match from the kick-off even if you tuned in late.

User Datagram Protocol — a fast, connectionless network protocol used for live video. Lower overhead than TCP, at the cost of some packet loss.

Video On Demand — a library of movies and series you can stream at any time. HelixStream's VOD library holds 80,000+ titles in HD and 4K.

Virtual Private Network — encrypts and routes your internet traffic through another server. Used by some IPTV viewers to bypass ISP throttling or geographic restrictions.

An IPTV middleware and panel system that became the de-facto standard for resellers. The 'Xtream Codes API' is supported by most modern IPTV apps.