Ooyala Live Glossary

Find and understand all the terminology behind Ooyala Live.

Term Definition
Ad-hoc Events Unplanned events that typically only have short notice before the stream is live for consumer viewing.
Archive A saved recording of the Ooyala Live event or program, made available through Backlot, that uses the same embed code as the Live event or program. The Archives for both Azure Media Services and Akamai SecureHD are not proper assets, in that we cannot retrieve them as an asset to ingest into our VOD transcoding system and cannot syndicate or import into an editing system to create clips.
Asset A generic term referring to video content.
Channel Channels enable live streaming, including the ingestion through the CDN to the end playback device. A channel receives live input streams from a live transcoder and makes them available for streaming. A channel can also have multiple programs. A channel is not exposed to a player, except via an embed code. For example, there is no specific concept as a channel in the CMS related to the new Live Platform; there is usually 1 - 1 relationship between a channel and a schedule. Events depend on a Channel. Thus, an ad-hoc event will be streamed on a Channel. Typical operations are that providers will have a channel configured that will persist even though it may only be used for streaming ad-hoc events.
DVR Digital Video Recorder. When creating an Ooyala Live event, setting the DVR Duration Override override the duration of the archive for DVRs.
Dynamic Ad Insertion (DAI) The ability to stitch ad content into video streams by modifying the video manifest before the content is delivered to the player.
Dynamic Manifest Management (DMM) The ability to dynamically generate manifests based on business rules. Required for DAI.
Egress The path from the CDN back to the Origin. The higher the effectiveness of the CDN’s caching within its delivery network, the lower the Egress bandwidth used.
Embed Code Ooyala-specific content or asset ID. On the Live Platform, each channel and event has a unique embed code. Note that recorded archives will have the same embed code as the source live event or program.
Encoding An Ooyala Live encoder converts the source audio and/or video into one of the acceptable live stream formats in a single bitrate for input into Ooyala Live.
Entry or Ingest Point The URL address configured to receive the output of the encoder that is streaming the live source video.
Event The live video content streaming on a channel with a specific start and end time. A one time event, either ad-hoc or scheduled prior may be defined with "Not Started", "On-air", and "Off-air" statuses; a single schedule may be associated with multiple events.
Ingress The path for the input stream from the Ooyala Live encoder to the Entry Point.
Linear Generally a constant video stream as in 24/7 broadcast TV, and may also include a channel that is only streaming live content a portion of each day.
Live Real-time streams from an actual live event, i.e., from camera to end-user; sometimes used as a broader term for live events, simulcast of broadcast streams, etc.
Live Origin A central location from which a CDN can retrieve encoded video content, manifests, and a DVR buffer.
Live-to-VOD Refers to a broad-range of uses, such as the creation of live clips and archive recordings of live events.
Monitoring Monitoring the stream directly using telemetry data, as well as Ooyala Live itself.
Quality of Service (QoS) Metrics reflecting the playback characteristics of the video stream from the perspective of the end-device, e.g. buffering.
Remote Asset Video assets as represented within the CMS system (Backlot), addressed using an embed code, and can be an event or channel.
Repackaging Converting streams of a single format into different formats for delivery such as DASH and HLS; repackaging is the same process as transcoding or packaging for VOD. DRM may also be applied during repackaging.
Schedule An EPG container for Events that are streamed on a channel.
Scheduled Events Events planned in advance of the actual live stream being available. These events do not typically recurring on a specific schedule.
Single Sign On (SSO) Ooyala Live integrates with Backlot and provides the administrator with Single Sign On capability. The Ooyala Live sign-in uses the same account credentials for user authentication as Backlot. Login syntax is identical to Backlot's such that the "Username" is the user's email address and password is the password of the user.
Slate A still image that is used for display within the player during times that the end-user is not intended to view the live stream; slates can be encoded, and the stream in the outbound stream or the playback device can switch the user’s video window to display the slate. The initial release of Ooyala Live supports server-side encoded slates in the live streams; future releases will provide a richer set of use cases and management to enable personalized slates.
Telemetry Metrics reflecting the availability of the video stream as it exists within the encoding/transcoding video pipeline.
Transcoding Converting a single bit-rate input stream into multiple bit rate streams of the same format; transcoding merely creates multiple streams from one, modifying the bit rate, and possibly frame size and resolution, but generally not the frame rate and not the format (one H.264-encoded RTMP stream becomes several RTMP streams of differing quality bitrates/frame sizes).
Trimming The archive is a recording of a live event (or program) and retains the same embed code of the live event (or program). Because live events typically will have the live source stream active before the actual start of the event, it may be desirable to trim the pre- and post-event content removed from the saved archive. Trimming preserves the embed code.

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