IPTV & Encoding Glossary
Definitions for IPTV, video encoding, streaming protocols, and industry terminology. Understand the technical terms used throughout our guides.
IPTV
Core ConceptsInternet Protocol Television - television content delivered over Internet Protocol (IP) networks rather than terrestrial, satellite, or cable formats.
Encoder
HardwareA device or software that converts raw video/audio signals into compressed digital formats suitable for streaming or storage.
Codec
TechnologyCoder-Decoder - software or hardware that compresses and decompresses video/audio data. Common examples: H.264, H.265, AAC.
H.264 (AVC)
CodecsAdvanced Video Coding - widely supported video compression standard offering good quality at moderate bitrates.
H.265 (HEVC)
CodecsHigh Efficiency Video Coding - successor to H.264 offering 50% better compression at the same quality level.
Multicast
NetworkingNetwork transmission method where a single stream is sent to multiple receivers simultaneously, efficient for IPTV distribution.
RTMP
ProtocolsReal-Time Messaging Protocol - Adobe protocol widely used for live streaming to platforms like YouTube and Facebook.
SRT
ProtocolsSecure Reliable Transport - open-source protocol with error correction for reliable streaming over unpredictable networks.
HLS
ProtocolsHTTP Live Streaming - Apple's adaptive streaming protocol using HTTP segments, widely supported on mobile devices.
HDMI
ConnectivityHigh-Definition Multimedia Interface - common consumer connector for transmitting high-quality video and audio.
SDI
ConnectivitySerial Digital Interface - professional broadcast standard for uncompressed digital video over coaxial cable.
Bitrate
TechnicalThe amount of data transmitted per second, measured in Mbps (megabits per second). Higher bitrates generally mean better quality.
Latency
TechnicalThe delay between video capture and display. Critical for live applications like sports and interactive content.
Set-Top Box (STB)
HardwareDevice that receives and decodes IPTV streams for display on televisions.
Headend
InfrastructureCentral facility where TV channels are received, processed, and distributed to the network.
IGMP
NetworkingInternet Group Management Protocol - network protocol that enables multicast group membership management.
RTP
ProtocolsReal-time Transport Protocol - standard for delivering audio and video over IP networks.
NDI
ProtocolsNetwork Device Interface - technology for transporting high-quality video over local networks for production.
Transcoding
ProcessingConverting video from one format, resolution, or bitrate to another for compatibility or bandwidth optimization.
Frame Rate
TechnicalNumber of video frames displayed per second (fps). Common rates: 24fps (film), 30fps (NTSC), 60fps (smooth motion).