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AWS mediaconnect documentation change

Service: mediaconnect · 2026-04-10 · Documentation low

File: mediaconnect/latest/ug/what-is-concepts.md

Summary

Major rewrite of the concepts and terminology documentation for AWS Elemental MediaConnect. Updated definitions for multiple terms, added new concepts (e.g., Router, Route, NDI), removed outdated terms, and reorganized the content structure.

Security assessment

The changes are primarily terminology updates and conceptual clarifications. While the term 'Allowlist CIDR' (previously 'Whitelist CIDR') is introduced, this is a language update rather than a security feature addition or vulnerability fix. No evidence of addressing a specific security vulnerability, weakness, or incident is present in the diff.

Diff

diff --git a/mediaconnect/latest/ug/what-is-concepts.md b/mediaconnect/latest/ug/what-is-concepts.md
index 7130649b4..477efe2dd 100644
--- a//mediaconnect/latest/ug/what-is-concepts.md
+++ b//mediaconnect/latest/ug/what-is-concepts.md
@@ -7 +7 @@
-To help you get started with AWS Elemental MediaConnect, and to understand how it works, refer to the follow key concepts and terminology
+To help you get started with AWS Elemental MediaConnect, and to understand how it works, refer to the following key concepts and terminology.
@@ -9 +9 @@ To help you get started with AWS Elemental MediaConnect, and to understand how i
-ARN
+Allowlist CIDR
@@ -12,16 +12 @@ ARN
-An [Amazon Resource Name](https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html), which is a unique identifier for any AWS resource.
-
-Availability Zone
-    
-
-A specific location where AWS Cloud computing resources are hosted. Availability Zones within an AWS Region are connected to each other with low latency, high throughput, and highly redundant networking. In addition, they are physically separated and isolated from each other. You can choose to create MediaConnect flows in different Availability Zones for redundancy.
-
-AWS Region
-    
-
-A geographic area where one or more Availability Zones are located. Each AWS Region is independent from the other Regions. You can create MediaConnect flows in different Regions to distribute content to receivers in different locations around the world. For more information about AWS Regions and their Availability Zones, see [AWS Global Infrastructure](https://aws.amazon.com/about-aws/global-infrastructure/).
-
-CDI flow
-    
-
-A MediaConnect flow that transports high-quality content that has been lightly compressed using JPEG XS. The content is demuxed into separate media streams for audio, video, or ancillary data. Each CDI flow can use multiple media streams for the source and multiple media streams for each output. MediaConnect uses AWS Cloud Digital Interface (AWS CDI) network technology to ingest content that adheres to the SMPTE 2110, part 22 transport standard.
+A range of Classless Inter-Domain Routing (CIDR) IP addresses permitted to contribute content to your MediaConnect flow or router input. In the MediaConnect API, this value is specified using the `WhitelistCidr` parameter.
@@ -34 +19 @@ An encoder that receives a live video feed and encodes the stream into a single,
-Distribution
+Destination
@@ -37 +22 @@ Distribution
-The result of creating outputs that point to MediaConnect flows in other AWS Regions, for the purpose of delivering content to different geographical locations.
+A physical or virtual connection point in your downstream environment that receives content from MediaConnect. A destination might be an affiliate, a cloud encoder, an on-premises decoder, another MediaConnect flow, a MediaConnect router input, or a MediaLive input. In flows, you define destinations by adding outputs. In the router, you create router outputs that connect to your destination endpoints.
@@ -42 +27 @@ Entitlement
-A permission that is granted to allow an AWS account to access the content in a specific MediaConnect flow. The content originator grants an entitlement to a specific AWS account (the subscriber). Once an entitlement is granted, the subscriber can create a flow using the originator's flow as the source. You can only grant entitlements to transport stream flows.
+A permission that allows an AWS account (the subscriber) to access the content in a specific MediaConnect flow. The content originator grants an entitlement to the subscriber account, which can then create a flow using the originator's content as the source.
@@ -47 +32 @@ Flow
-A connection between one or more video sources and one or more outputs. For each flow, you specify the transport protocol to use, encryption information, and details about the source. MediaConnect returns an ingest endpoint where you can send your live video as a single unicast stream. The service replicates and distributes the video to every output that you specify, whether inside or outside the AWS Cloud. There are two types of flows: transport stream and JPEG XS.
+A connection between one or more video sources and one or more outputs. For each flow, you specify the protocol to use, encryption information, and details about the source. The service replicates and distributes the video to every output that you specify, whether inside or outside the AWS Cloud.
@@ -49 +34 @@ A connection between one or more video sources and one or more outputs. For each
-Media stream
+Input
@@ -52 +37 @@ Media stream
-A single track or stream of media that contains video, audio, or ancillary data. After you add a media stream to a flow, you can associate it with sources and outputs on that flow, as long as they use the CDI protocol or the ST 2110 JPEG XS protocol. Each source or output can consist of one or many media streams. 
+A connection point in MediaConnect that receives content from a source. In flows, the flow's source configuration acts as the input. In the router, a router input is a dedicated resource that receives content and can be routed to multiple outputs simultaneously.
@@ -54 +39 @@ A single track or stream of media that contains video, audio, or ancillary data.
-Mezzanine stream
+Media stream
@@ -57 +42 @@ Mezzanine stream
-A lightly compressed video stream that takes up less space than a full resolution uncompressed stream. The quality of a mezzanine stream is high enough to use as a source for creating final encodes that are delivered to consumer devices. 
+A single track of video, audio, or ancillary data. Media streams are used with CDI and ST 2110 JPEG XS flows, where content is demuxed into separate tracks. Each source or output can consist of one or many media streams.
@@ -59 +44 @@ A lightly compressed video stream that takes up less space than a full resolutio
-Offering
+Mezzanine stream
@@ -62 +47 @@ Offering
-A discount that MediaConnect offers in exchange for a commitment to use a certain amount of outbound bandwidth each month. When you purchase an offering, it becomes a reservation. 
+A lightly compressed video stream that takes up less space than a full resolution uncompressed stream. The quality is high enough to use as a source for creating final encodes delivered to consumer devices.
@@ -64 +49 @@ A discount that MediaConnect offers in exchange for a commitment to use a certai
-Originator account
+NDI (Network Device Interface)
@@ -67 +52 @@ Originator account
-An AWS account that was used to create a flow with at least one entitlement.
+A standard developed by NewTek (now Vizrt) that enables video-compatible products to communicate, deliver, and receive high-definition video over a standard Ethernet network. NDI allows multiple video systems to share video across a network in real time with low latency. MediaConnect supports NDI as both a source and output type for flows, enabling integration with NDI-based production environments.
@@ -69 +54 @@ An AWS account that was used to create a flow with at least one entitlement.
-Output
+Network interface
@@ -72 +57 @@ Output
-The destination where you want MediaConnect to send ingested video. An output can have the same protocol or a different protocol from the source.
+The network configuration that determines how MediaConnect resources connect to other resources. In flows, a VPC interface provides private connectivity between a flow and your Amazon VPC. Flows use public networking by default. In the router, a network interface can be either public (for connecting over the internet) or VPC (for connecting to resources within your VPC), and is associated with one or more router I/Os.
@@ -74 +59 @@ The destination where you want MediaConnect to send ingested video. An output ca
-Policy
+Offering
@@ -77 +62 @@ Policy
-An [IAM policy](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html), which is used to manage access in AWS. 
+A discount that MediaConnect offers in exchange for a commitment to use a certain amount of outbound bandwidth each month. When you purchase an offering, it becomes a reservation.
@@ -79 +64 @@ An [IAM policy](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies
-Protocol
+Output
@@ -82 +67 @@ Protocol
-A set of rules used for file transmission. MediaConnect provides protocol options (such as Zixi, RTP, and RTP-FEC) that implement a quality of service (QoS) layer to enable the service to work with mezzanine-quality live video.
+A connection point in MediaConnect that sends content to a destination. In flows, an output defines where and how the service delivers video. In the router, a router output is a dedicated resource that sends content and can receive from only one input at a time.
@@ -84 +69 @@ A set of rules used for file transmission. MediaConnect provides protocol option
-Receiver
+Protocol
@@ -87 +72 @@ Receiver
-The recipient of a stream from MediaConnect. A receiver is any entity, inside or outside of the AWS Cloud, that can receive RTP or Zixi streams. This might be an affiliate, a cloud encoder, or another MediaConnect flow.
+A set of rules used for video and audio transmission. MediaConnect provides protocol options (such as SRT, RTP, RTP-FEC, RIST, Zixi, and NDI) that implement a quality of service (QoS) layer for mezzanine-quality live video. Supported protocols differ between flows and the router.
@@ -92,3 +77 @@ Reservation
-A commitment to use a specific amount of outbound bandwidth each month over the course of a specified duration. In return, you pay a discounted hourly rate for that bandwidth. When you purchase an offering, it becomes a reservation.
-
-Replication
+A commitment to use a specific amount of outbound bandwidth each month over a specified duration. In return, you pay a discounted hourly rate. Reservations are created by purchasing an offering.
@@ -95,0 +79 @@ Replication
+Route
@@ -97 +80,0 @@ Replication
-The result of creating a flow with more than one output. The source is replicated to produce multiple outputs. Replication is useful when you want to distribute your video streams to multiple workflows within your own account or share your content with other AWS accounts. 
@@ -99 +82 @@ The result of creating a flow with more than one output. The source is replicate
-Resource
+The complete end-to-end path from an input to an output within the router. Routes are defined by input-to-output assignments.
@@ -100,0 +84 @@ Resource
+Router
@@ -102 +85,0 @@ Resource
-An entity in AWS that you can work with. Each AWS resource is assigned an Amazon Resource Name (ARN) that acts as a unique identifier. In MediaConnect, these are the resources and their ARN formats: 
@@ -104,15 +87 @@ An entity in AWS that you can work with. Each AWS resource is assigned an Amazon
-  * Entitlement: `aws:mediaconnect:`region`:`account-id`:entitlement:`resourceID`:`resourceName``
-
-  * Flow: `aws:mediaconnect:`region`:`account-id`:flow:`resourceID`:`resourceName``
-
-  * Output: `aws:mediaconnect:`region`:`account-id`:output:`resourceID`:`resourceName``
-
-  * Source: `aws:mediaconnect:`region`:`account-id`:source:`resourceID`:`resourceName``
-
-
-
-
-Sharing
-    
-
-Allowing another AWS account to access the content of your flow. To share your content, you (the originator) grant an entitlement to another AWS account (the subscriber).
+A MediaConnect capability that provides dynamic, software-defined signal routing for live video in the cloud. A router can accept multiple inputs simultaneously and route any input to any output on demand. Routers are designed for use cases such as master control, live cloud production, playout, and contribution workflows.
@@ -123,21 +92 @@ Source
-External video content that includes configuration information (encryption and source type) and a network address. Each flow has at least one source. A standard source comes from a source other than another MediaConnect flow, such as an on-premises encoder. An entitled source comes from an MediaConnect flow that is owned by another AWS account and has granted an entitlement to your account.
-
-Subscriber account
-    
-
-An AWS account that been granted access to content from an AWS Elemental MediaConnect flow that is owned by another AWS account (the originator account). This permission is granted when the originator sets up an entitlement for the subscriber. The entitlement permits the subscriber to create a flow that uses the originator's content as the source.
-
-Transport stream flow
-    
-
-A MediaConnect flow that transports compressed content. Audio, video, and ancillary data must be combined, or _muxed_ , into a single stream. The quality is high enough to use as a source for creating final encodes that are delivered to consumer devices. You can add outputs to indicate where you want the content to be sent and how you want it transported. You can also grant entitlements to allow another AWS account to access the content.
-
-VPC interface
-    
-
-A connection between a flow and a virtual private cloud (VPC) that was created using the Amazon Virtual Private Cloud (Amazon VPC) service.
-
-Whitelisting
-    
-
-Allowing a block of Classless Inter-Domain Routing (CIDR) IP addresses to serve as a source to your MediaConnect flow.
+A physical or virtual connection point in your upstream environment that transmits content into MediaConnect. A source might be an on-premises contribution encoder, an NDI device, another MediaConnect flow, or a MediaLive channel output. In flows, you configure sources when you create or update a flow. A standard source comes from outside of MediaConnect, while an entitled source comes from a flow owned by another AWS account that has granted an entitlement to your account. In the router, you connect sources to router inputs.