Ad Impression

The measure of an ad being viewed by whoever is watching the content in which the ad is delivered. This metric, or some form of it, is often…

Adaptive Bitrate

Adaptive Bitrate is a method of video streaming that adjusts video quality based on network conditions to improve video streaming over HTTP networks. This process involves encoding source…

Advanced Video Coding

Video compression standard, published in 2004, with the goal to succeed MPEG-2/H.262 by reducing bitrate up to 50% while maintaining the same perceptual video quality (PVQ).

Advertising-based Video-on-Demand

A streaming video service that offers consumers access to on-demand video content which includes advertisements. This term is typically associated with a streaming service delivering TV though an…

Apple QuickTime Movie File

File with .mov extension which uses QuickTime File Format (QTFF) multimedia container to store audio, video and metadata.

Common Media Application Format (CMAF)

Common Media Application Format (CMAF) is an Apple-Microsoft standard aiming to simplify workflows by defining concurrent use of multiple ABR methods (e.g. DASH, HLS) while using one set…

Content Delivery Network (CDN)

Content Delivery Network (CDN) is a data network optimized for the delivery of content, e.g. video, at a large scale. Comprised of both hardware and software components.

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Digital Rights Management

Digital Rights Management is the use of keys and certificates to authorize playback of a video stream to a specific user and/or device over IP streaming like OTT.

Digital Rights Management (DRM) [Security WG]

Digital Rights Management (DRM) is the use of keys and certificates to authorize playback of a video stream to a specific user and/or device over IP streaming like…

Digital Video Advertising

Advertising that appears before, during or after digital video content in a video player (i.e., pre-roll, mid-roll, post-roll video ads). Digital video ads include TV commercials online and…

DVB-S2

The 2nd generation of DVB digital satellite broadcast.

DVB-T2

The 2nd generation of DVB digital terrestrial broadcast.

Encoded Bitrate

Encoded Bitrate is the bitrate of the compressed (i.e. during ABR encode/transcode) audio or video media objects, each Bitrate level representing different quality levels in ABR. The concept…

Encoder-Decoder

Hardware or software that encodes or decodes a data stream (e.g. audio, video, closed captions).

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Group of Pictures (GOP)

Group of Pictures (GOP) is a collection of successive pictures within a coded video stream. It is composed of I, P, B and D frames which are composing…

High Efficiency Streaming Protocol (HESP)

High Efficiency Streaming Protocol (HESP) is an adaptive HTTP-based video streaming protocol with a particular focus on low end-to-end latency and fast channel-change.