ANSI SCTE 154-4:2018 pdf free download – MPEG Management Information Base SCTE-HMS-MPEG MIB
ES – Elementary Stream – Defined by MPEG-2 Systems (ISO/IEC 13818-1). An elementary stream contains only one kind of data, e.g. audio, video or closed caption. An elementary stream is often referred to as “elementary”, “data”, “audio” or “video” bit streams or streams. IGMP- Internet Group Management Protocol – A protocol that hosts use to keep local routers informed of their membership in multicast groups. When all hosts leave a group, the router no longer forwards datagram’s that arrive for the group. MPTS – Multi-Program Transport Stream – Transport Streams are the combining (multiplexing) of multiple program channels (typically digital video channels) onto a signal communication channel (such as a satellite transponder channel). A MPEG transport stream (MPEG-TS) may also called a multi-program transport stream (MPTS) and at other times a SPTS. NIT – Network Information Table – Describes how transport streams are organized on the current network, and also describes some of the physical properties of the network itself. The NIT also contains the name of the network, and the network ID. This is a value that uniquely identifies the network that is currently broadcasting the transport stream, and may be different from the original network ID that we discussed earlier, if the transport stream is being rebroadcast. PAT – Program Association Table- Each Transport Stream contains one or more Transport Stream packets with PID value 0x0000. These Transport Stream packets together shall contain a complete Program Association Table (PAT), providing a complete list of all programs within the Transport Stream. PCR – Program Clock Reference) – The program clock reference (PCR) is transmitted within a video transport stream as a time reference. A sufficiently accurate and correctly received PCR is a precondition for correct data display in the receiver. PID – Packet ID- Packet identifier; a unique 13-bit value used to identify the type of data stored in the packet payload (see ITU-T H.222.0 / ISO/IEC 13818-1).
PSIP – Program And System Information Protocol – This is the digital information transmitted by a DTV station that includes the time and date, major and minor channel numbers, and program information. SDV – Switched Digital Video – Industry term for a network scheme for distributing digital video via a cable with limited capacity. SPTS – Single Program Transport Stream – A Transport Stream which combines PES packets from only one program with a common timebase. SSM – Source Specific Multicast – is a method of delivering multicast packets originating in only a specific source address S to any receiver that requests it. It limits the original multicast model to be originated from just one host, simplifiying the requirements on the network and easing security of multicast delivery. TS – Transport Stream – A Transport Stream combines PES packets from one or more programs with one or more independent time bases into a single stream. The PES packets made up of elementary streams that form a program share a common timebase. TSID – Transport Stream Identifier – Identifier of a Transport Stream. VBR- Variable Bit Rate– Variable Bit Rate provides a specified throughput capacity but data is not sent evenly. This is a popular choice for voice and videoconferencing data. VOD – Video On Demand – A service that allows subscribers to retrieve and watch a selection of movies (on video) at any time.