P

Last updated on Dec 27, 2018

Packet

Formatted unit of data carried by a packet-switched network. When data is formatted into packets, packet switching is possible and the bandwidth of the communication can be better shared among users than with circuit switching.

Packet Identifier

Abbreviated as PID. Identifies each table or elementary stream in an MPEG transport stream.

Payload

Sometimes referred to as the actual or body data. It is the cargo of a data transmission, or the part of the transmitted data which is the fundamental purpose of the transmission.

P-Frame

Predicted picture frame. A video compression picture type that can use data from previous frames to decompress.

PID

Abbreviation of Packet Identifier. Identifies each table or elementary stream in an MPEG transport stream.

Pillarboxing

Pillarboxing, or reversed letterboxing, is the display of an image within a wider image frame by adding lateral mattes (i.e., vertical bars at the sides).

Ping

Software utility used to test the reachability of a host on a network.

PIP

Abbreviation of Private Internet Protocol. Refers to connectivity into a private extranet network which by its design emulates the functioning of the Internet.

Playlist

A list of video or audio files that can be played back on a media player sequentially or in random order.

PMT

Program Map Table (PMT). A collection of PIDs available in a transport stream.

Poster Image

A reduced-size version of a picture or video, used to help in recognizing and organizing them. Sometimes referred to as the "thumbnail".

Post-Roll

A post-roll ad is one of four ad types used by an Ad Policy to specify when the ad plays. Post-Roll ads play after the content. 

Bumpers + Pre-roll + mediaObject + mediaObject-chapterPoint + Mid-roll +mediaObject + Post-roll

Pre-Roll

A pre-roll ad is one of four ad types used by an Ad Policy to specify when the ad plays. Pre-Roll ads play before the content. 

Bumpers + Pre-roll + mediaObject + mediaObject-chapterPoint + Mid-roll +mediaObject + Post-roll

Profiles

A series of features sets aimed at different applications. Most common are Baseline, Main, and High.

Program Guide

A menu-based system that provides the users of a media application with continuously updated menus displaying scheduling information for current and upcoming programming. 

Program Map Table

Program Map Table (PMT). A collection of PIDs available in a transport stream.

Property Expression

In computing, strings of text or an instruction to execute something that will return a value.

Provisioning

In general, provisioning means "providing" or making something available. ... In a storage area network (SAN), storage provisioning is the process of assigning storage to optimize performance. In telecommunications terminology, provisioning means providing a product or service, such as wiring or bandwidth.

PSIP

Program and System Information Protocol (PSIP) data. It is used in broadcast systems such as DVB, ATSC, and IPTV.

PuTTY

A free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection.