JW Glossary

360 Video
Video content where a view in every direction is recorded at the same time, shot using an omnidirectional camera or a collection of cameras. During playback the viewer has control of the viewing direction like a spherical panorama.

Ad Impressions    
When an ad is fetched from its source and is countable. Each time an ad is viewed it is counted as one impression. Whether the ad is clicked is not taken into account. 

Ad Manager    
An object or system which handles ad requests and playback and in some instances more advanced features based on the specific ad manager.

Adaptive Streaming / Adaptive Bitrate (ABR)    
A process that adjusts the quality of a video delivered to a web page based on changing network conditions to ensure the best possible viewer experience. The most common ABR technologies are HTTP Live Streaming (HLS) created by Apple and Dynamic Adaptive Streaming over HTTP (DASH). JW Player supports the creation and playback of both formats.

Analytics - Right Now
A constantly refreshing snapshot of your current unique viewership available in the JW Dashboard. This analytics feature surfaces the number of live viewers, top content, geography, devices, and top domains.

Analytics - Segmentation
A tool in the JW Dashboard that allows publishers to explore their data by creating custom queries and reports.

API Key
An 8 character alphanumeric identifier for an individual property. It is used in the JW Platform API to identify the caller, every API call must include an api_key parameter. API keys are not sensitive but API secrets are. It is ok to pass the API key around in emails, hipchat, etc. but API secrets should never be included in these insecure communications.

AVOD (Advertising-supported Video on Demand)  
Services that monetize their content by serving ads to users, as opposed to other business models such as paid subscription or pay-per-title.   

Cloud-hosted Player Library  
Bundled JavaScript application files loaded from the JW Player CDN that will auto-update to the latest version of the player with the latest features and fixes to ensure the best possible playback. 

Complete Rates
The number of times a video is watched to completion.

Curated Playlist
Ordered collections of video content created from human curation and tag based filtering. They are available to all JW Player users and are optimized for linear or episodic viewing experiences where viewer watches a sequence of videos in order.

Dimension    
An attribute of your metrics (ie. country, device, media id) used when segmenting or filtering analytics within the dashboard.
 
DNS Masking
A feature that allows customers to access the content API out of their own domain rather than content.jwplayer.com. At this time, DNS masked endpoints are only available over non-secure HTTP requests. Setting up a DNS mask is a multi-step process requiring manual actions from both JW Player and the customer, the feature is only available to enterprise edition accounts. 

DRM
A combination of encryption, authentication and access control technologies that are used to prevent unauthorized users from consuming copyrighted media content. The most widely used DRM solutions today are Microsoft PlayReady, Google Widevine, and Apple FairPlay Streaming. JW Player supports playback of all three.

Encoding / Compression
The process of removing redundancies from raw video and audio data, thereby reducing the amount of data required to deliver the media across a network. The process can result in reduced visual or auditory quality of the encoded media, but the loss is usually imperceptible to the user.

Freewheel
An ad server owned by Comcast whose platform touches on everything from order management and ad serving, to syndication and rights management, as well as reporting.

Geoblocking
Allows users to restrict access to their content to a list of allowed countries or block a list of blocked countries. Geo-blocking is only available to enterprise edition customers and is configured at the property level for all content on that property.

HLS (HTTP Live Streaming)
An adaptive streaming technology created by Apple that allows the player to automatically adjust the quality of a video delivered to a web page based on changing network conditions to ensure the best possible viewer experience. JW Player supports the creation and playback of HLS for VOD and live content.    

Live Streaming
Live streaming is a type of broadcast that is delivered over the Internet where the source content is typically a live event such as a sporting event, religious service, etc. Unlike VOD, viewers of a live stream all watch the same broadcast at the same time. JW Player and JW Platform support live streaming natively via our JW Live product.    

Media ID
An 8 character alphanumeric identifier that uniquely identifies a piece of media. Media IDs are generated when the platform API /videos/create/ endpoint is called. Uploading a video to the dashboard or adding an external URL video via the dashboard triggers this call as well. In the media api, the parameter video_key is used for Media IDs.

MPEG-Dash    
Dynamic Adaptive Streaming over HTTP (DASH), also known as MPEG-DASH, is an adaptive bitrate streaming technique that enables high quality streaming of media content over the Internet delivered from conventional HTTP web servers. JW Player supports the creation and playback of DASH for VOD and live content.

Play Rates
The number of video starts across all embedded players.

Playlist ID
An 8 character alphanumeric identifier that is generated when the platform API /channels/create/ endpoint is called. Creating a playlist in dashboard triggers this call as well. In the media api, the parameter channel_key is used for Playlist IDs.

Poster Image
An image that is shown to the viewer while the video is downloading, or until the viewer hits the play button.

Recommended Playlist
Contextual collections of videos built to power content discovery experiences in-player and out of player. The JW Recommendations engine generates results in real-time in response to the completion of a specific video in-player or from a Media ID or keywords sent to the JW Platform API.

Schedule ID
An 8 character alphanumeric identifier that uniquely identifies an ad schedule. Schedule IDs are generated when the platform API /advertising/schedules/create/ endpoint is called. Creating a new ad schedule in dashboard triggers this call as well. In the media api, the parameter schedule_key is used for Schedule IDs.

SDK (Software Development Kit)
A set of tools that allow the creation of applications for a certain framework or development platform. Typically they are the implementation of one or more APIs to interface to a particular programming language, and include debugging utilities, sample code, and documentation. JW Player offers SDKs to stream video in iOS & Android apps.

Self-hosted Player    
The JW Player JavaScript application files are hosted from your own domain. This method is used if you have your own CDN or want to stay locked into a version of the player. Note: we do not recommend this as the player updates every 4-6 weeks and crucial updates may be missed.

Single-Line Embed
A single line of javascript that loads a player with content onto your web page.

Storage
Total bytes of media stored on the JW Platform including originals and all conversions.  This metric does not reset on a monthly basis.

Streaming
Total bytes of media delivered by the JW Platform including downloading from the dashboard or API. This metric resets at the beginning of each month. 

SVOD (Subscription-supported Video on Demand)  
Services monetize their content through paid subscriptions from users, as opposed to other business models such as advertising or pay-per-title.

Time Watched    
The total amount of time watched by viewers, (in seconds).

Track    
An HTML element used to specify subtitles, captions descriptions, chapters or metadata, that should be visible when the media is playing. The file format for a track is a vtt file.

Track - Captions
Defines translation of dialogue and sound effects used to enhance accessibility in video.  

Track - Chapters    
Contains timed metadata which defines chapter titles and cue points suitable for navigating the media resource.

Track - Metadata
Defines content used by scripts. Not visible for the user.

URL Signing
A mechanism for securing access to the JW Platform Content API. When URL Signing enforcement is enabled on an account; requests to the content API must be signed using the property's API secret. The signing also includes an expiration time after which the link will no longer work. This ensures that only links generated by the customer can be used to access their content and that if those links are used elsewhere, the use will expire at the expiration time.

VR (Virtual Reality)
A realistic and immersive three-dimensional environment, created using interactive software and hardware, and experienced or controlled by movement of the body. VR experiences typically require wearing a head mounted display (HMD).

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