start-composition¶

Description¶

Starts a Composition from a stage based on the configuration provided in the request.

A Composition is an ephemeral resource that exists after this operation returns successfully. Composition stops and the resource is deleted:

When StopComposition is called.
After a 1-minute timeout, when all participants are disconnected from the stage.
After a 1-minute timeout, if there are no participants in the stage when StartComposition is called.
When broadcasting to the IVS channel fails and all retries are exhausted.
When broadcasting is disconnected and all attempts to reconnect are exhausted.

Synopsis¶

  start-composition
--stage-arn <value>
[--idempotency-token <value>]
[--layout <value>]
--destinations <value>
[--tags <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]

Options¶

--stage-arn (string)

ARN of the stage to be used for compositing.

--idempotency-token (string)

Idempotency token.

--layout (structure)

Layout object to configure composition parameters.

grid -> (structure)

Configuration related to grid layout. Default: Grid layout.

featuredParticipantAttribute -> (string)

This attribute name identifies the featured slot. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the featured slot. Default: "" (no featured participant).

omitStoppedVideo -> (boolean)

Determines whether to omit participants with stopped video in the composition. Default: false .

videoAspectRatio -> (string)

Sets the non-featured participant display mode, to control the aspect ratio of video tiles. VIDEO is 16:9, SQUARE is 1:1, and PORTRAIT is 3:4. Default: VIDEO .

videoFillMode -> (string)

Defines how video content fits within the participant tile: FILL (stretched), COVER (cropped), or CONTAIN (letterboxed). When not set, videoFillMode defaults to COVER fill mode for participants in the grid and to CONTAIN fill mode for featured participants.

gridGap -> (integer)

Specifies the spacing between participant tiles in pixels. Default: 2 .

pip -> (structure)

Configuration related to PiP layout.

featuredParticipantAttribute -> (string)

This attribute name identifies the featured slot. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the featured slot. Default: "" (no featured participant).

omitStoppedVideo -> (boolean)

Determines whether to omit participants with stopped video in the composition. Default: false .

videoFillMode -> (string)

Defines how video content fits within the participant tile: FILL (stretched), COVER (cropped), or CONTAIN (letterboxed). Default: COVER .

gridGap -> (integer)

Specifies the spacing between participant tiles in pixels. Default: 0 .

pipParticipantAttribute -> (string)

Specifies the participant for the PiP window. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the PiP slot. Default: "" (no PiP participant).

pipBehavior -> (string)

Defines PiP behavior when all participants have left: STATIC (maintains original position/size) or DYNAMIC (expands to full composition). Default: STATIC .

pipOffset -> (integer)

Sets the PiP window’s offset position in pixels from the closest edges determined by PipPosition . Default: 0 .

pipPosition -> (string)

Determines the corner position of the PiP window. Default: BOTTOM_RIGHT .

pipWidth -> (integer)

Specifies the width of the PiP window in pixels. When this is not set explicitly, pipWidth ’s value will be based on the size of the composition and the aspect ratio of the participant’s video.

pipHeight -> (integer)

Specifies the height of the PiP window in pixels. When this is not set explicitly, pipHeight ’s value will be based on the size of the composition and the aspect ratio of the participant’s video.

Shorthand Syntax:

grid={featuredParticipantAttribute=string,omitStoppedVideo=boolean,videoAspectRatio=string,videoFillMode=string,gridGap=integer},pip={featuredParticipantAttribute=string,omitStoppedVideo=boolean,videoFillMode=string,gridGap=integer,pipParticipantAttribute=string,pipBehavior=string,pipOffset=integer,pipPosition=string,pipWidth=integer,pipHeight=integer}

JSON Syntax:

{
  "grid": {
    "featuredParticipantAttribute": "string",
    "omitStoppedVideo": true|false,
    "videoAspectRatio": "AUTO"|"VIDEO"|"SQUARE"|"PORTRAIT",
    "videoFillMode": "FILL"|"COVER"|"CONTAIN",
    "gridGap": integer
  },
  "pip": {
    "featuredParticipantAttribute": "string",
    "omitStoppedVideo": true|false,
    "videoFillMode": "FILL"|"COVER"|"CONTAIN",
    "gridGap": integer,
    "pipParticipantAttribute": "string",
    "pipBehavior": "STATIC"|"DYNAMIC",
    "pipOffset": integer,
    "pipPosition": "TOP_LEFT"|"TOP_RIGHT"|"BOTTOM_LEFT"|"BOTTOM_RIGHT",
    "pipWidth": integer,
    "pipHeight": integer
  }
}

--destinations (list)

Array of destination configuration.

(structure)

Complex data type that defines destination-configuration objects.

name -> (string)

Name that can be specified to help identify the destination.

channel -> (structure)

An IVS channel to be used for broadcasting, for server-side composition. Either a channel or an s3 must be specified.

channelArn -> (string)

ARN of the channel to use for broadcasting. The channel and stage resources must be in the same AWS account and region. The channel must be offline (not broadcasting).

encoderConfigurationArn -> (string)

ARN of the EncoderConfiguration resource. The encoder configuration and stage resources must be in the same AWS account and region.

s3 -> (structure)

An S3 storage configuration to be used for recording video data. Either a channel or an s3 must be specified.

storageConfigurationArn -> (string)

ARN of the StorageConfiguration where recorded videos will be stored.

encoderConfigurationArns -> (list)

ARNs of the EncoderConfiguration resource. The encoder configuration and stage resources must be in the same AWS account and region.

(string)

recordingConfiguration -> (structure)

Array of maps, each of the form string:string (key:value) . This is an optional customer specification, currently used only to specify the recording format for storing a recording in Amazon S3.

format -> (string)

The recording format for storing a recording in Amazon S3.

Shorthand Syntax:

name=string,channel={channelArn=string,encoderConfigurationArn=string},s3={storageConfigurationArn=string,encoderConfigurationArns=[string,string],recordingConfiguration={format=string}} ...

JSON Syntax:

[
  {
    "name": "string",
    "channel": {
      "channelArn": "string",
      "encoderConfigurationArn": "string"
    },
    "s3": {
      "storageConfigurationArn": "string",
      "encoderConfigurationArns": ["string", ...],
      "recordingConfiguration": {
        "format": "HLS"
      }
    }
  }
  ...
]

--tags (map)

Tags attached to the resource. Array of maps, each of the form string:string (key:value) . See Best practices and strategies in Tagging AWS Resources and Tag Editor for details, including restrictions that apply to tags and “Tag naming limits and requirements”; Amazon IVS has no constraints on tags beyond what is documented there.

key -> (string)

value -> (string)

Shorthand Syntax:

KeyName1=string,KeyName2=string

JSON Syntax:

{"string": "string"
  ...}

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command’s default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.

--output (string)

The formatting style for command output.

json
text
table
yaml
yaml-stream

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

--cli-binary-format (string)

The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.

base64
raw-in-base64-out

--no-cli-pager (boolean)

Disable cli pager for output.

--cli-auto-prompt (boolean)

Automatically prompt for CLI input parameters.

--no-cli-auto-prompt (boolean)

Disable automatically prompt for CLI input parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

Example 1: To start a composition with default layout settings

The following start-composition example starts a composition for the specified stage to be streamed to the specified locations.

aws ivs-realtime start-composition \
    --stage-arn arn:aws:ivs:ap-northeast-1:123456789012:stage/defgABCDabcd \
    --destinations '[{"channel": {"channelArn": "arn:aws:ivs:ap-northeast-1:123456789012:channel/abcABCdefDEg", \
        "encoderConfigurationArn": "arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"}}, \
        {"s3":{"encoderConfigurationArns":["arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"], \
        "storageConfigurationArn":"arn:aws:ivs:ap-northeast-1:123456789012:storage-configuration/FefABabCDcdE"}}]'

Output:

{
    "composition": {
        "arn": "arn:aws:ivs:ap-northeast-1:123456789012:composition/abcdABCDefgh",
        "destinations": [
            {
                "configuration": {
                    "channel": {
                        "channelArn": "arn:aws:ivs:ap-northeast-1:123456789012:channel/abcABCdefDEg",
                        "encoderConfigurationArn": "arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"
                    },
                    "name": ""
                },
                "id": "AabBCcdDEefF",
                "state": "STARTING"
            },
            {
                "configuration": {
                    "name": "",
                    "s3": {
                        "encoderConfigurationArns": [
                            "arn:aws:ivs:arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"
                        ],
                        "recordingConfiguration": {
                            "format": "HLS"
                        },
                        "storageConfigurationArn": "arn:arn:aws:ivs:ap-northeast-1:123456789012:storage-configuration/FefABabCDcdE"
                    }
                },
                "detail": {
                    "s3": {
                        "recordingPrefix": "aBcDeFgHhGfE/AbCdEfGhHgFe/GHFabcgefABC/composite"
                    }
                },
                "id": "GHFabcgefABC",
                "state": "STARTING"
            }
        ],
        "layout": {
            "grid": {
                "featuredParticipantAttribute": ""
                "gridGap": 2,
                "omitStoppedVideo": false,
                "videoAspectRatio": "VIDEO",
                "videoFillMode": ""
            }
        },
        "stageArn": "arn:aws:ivs:ap-northeast-1:123456789012:stage/defgABCDabcd",
        "startTime": "2023-10-16T23:24:00+00:00",
        "state": "STARTING",
        "tags": {}
    }
}

For more information, see Composite Recording (Real-Time Streaming) in the Amazon Interactive Video Service User Guide.

Example 2: To start a composition with PiP layout

The following start-composition example starts a composition for the specified stage to be streamed to the specified locations using PiP layout.

aws ivs-realtime start-composition \
    --stage-arn arn:aws:ivs:ap-northeast-1:123456789012:stage/defgABCDabcd \
    --destinations '[{"channel": {"channelArn": "arn:aws:ivs:ap-northeast-1:123456789012:channel/abcABCdefDEg", \
        "encoderConfigurationArn": "arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"}}, \
        {"s3":{"encoderConfigurationArns":["arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"], \
        "storageConfigurationArn":"arn:aws:ivs:ap-northeast-1:123456789012:storage-configuration/FefABabCDcdE"}}]' \
    --layout pip='{featuredParticipantAttribute="abcdefg"}'

Output:

{
    "composition": {
        "arn": "arn:aws:ivs:ap-northeast-1:123456789012:composition/wxyzWXYZpqrs",
        "destinations": [
            {
                "configuration": {
                    "channel": {
                        "channelArn": "arn:aws:ivs:ap-northeast-1:123456789012:channel/abcABCdefDEg",
                        "encoderConfigurationArn": "arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"
                    },
                    "name": ""
                },
                "id": "AabBCcdDEefF",
                "state": "STARTING"
            },
            {
                "configuration": {
                    "name": "",
                    "s3": {
                        "encoderConfigurationArns": [
                            "arn:aws:ivs:arn:aws:ivs:ap-northeast-1:123456789012:encoder-configuration/ABabCDcdEFef"
                        ],
                        "recordingConfiguration": {
                            "format": "HLS"
                        },
                        "storageConfigurationArn": "arn:arn:aws:ivs:ap-northeast-1:123456789012:storage-configuration/FefABabCDcdE"
                    }
                },
                "detail": {
                    "s3": {
                        "recordingPrefix": "aBcDeFgHhGfE/AbCdEfGhHgFe/GHFabcgefABC/composite"
                    }
                },
                "id": "GHFabcgefABC",
                "state": "STARTING"
            }
        ],
        "layout": {
            "pip": {
                "featuredParticipantAttribute": "abcdefg",
                "gridGap": 0,
                "omitStoppedVideo": false,
                "pipBehavior": "STATIC",
                "pipOffset": 0,
                "pipParticipantAttribute": "",
                "pipPosition": "BOTTOM_RIGHT",
                "videoFillMode": "COVER"
            }
        },
        "stageArn": "arn:aws:ivs:ap-northeast-1:123456789012:stage/defgABCDabcd",
        "startTime": "2023-10-16T23:24:00+00:00",
        "state": "STARTING",
        "tags": {}
    }
}

For more information, see Composite Recording (Real-Time Streaming) in the Amazon Interactive Video Service User Guide.

Output¶

composition -> (structure)

The Composition that was created.

arn -> (string)

ARN of the Composition resource.

stageArn -> (string)

ARN of the stage used as input

state -> (string)

State of the Composition.

layout -> (structure)

Layout object to configure composition parameters.

grid -> (structure)

Configuration related to grid layout. Default: Grid layout.

featuredParticipantAttribute -> (string)

This attribute name identifies the featured slot. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the featured slot. Default: "" (no featured participant).

omitStoppedVideo -> (boolean)

Determines whether to omit participants with stopped video in the composition. Default: false .

videoAspectRatio -> (string)

Sets the non-featured participant display mode, to control the aspect ratio of video tiles. VIDEO is 16:9, SQUARE is 1:1, and PORTRAIT is 3:4. Default: VIDEO .

videoFillMode -> (string)

Defines how video content fits within the participant tile: FILL (stretched), COVER (cropped), or CONTAIN (letterboxed). When not set, videoFillMode defaults to COVER fill mode for participants in the grid and to CONTAIN fill mode for featured participants.

gridGap -> (integer)

Specifies the spacing between participant tiles in pixels. Default: 2 .

pip -> (structure)

Configuration related to PiP layout.

featuredParticipantAttribute -> (string)

This attribute name identifies the featured slot. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the featured slot. Default: "" (no featured participant).

omitStoppedVideo -> (boolean)

Determines whether to omit participants with stopped video in the composition. Default: false .

videoFillMode -> (string)

Defines how video content fits within the participant tile: FILL (stretched), COVER (cropped), or CONTAIN (letterboxed). Default: COVER .

gridGap -> (integer)

Specifies the spacing between participant tiles in pixels. Default: 0 .

pipParticipantAttribute -> (string)

Specifies the participant for the PiP window. A participant with this attribute set to "true" (as a string value) in ParticipantTokenConfiguration is placed in the PiP slot. Default: "" (no PiP participant).

pipBehavior -> (string)

Defines PiP behavior when all participants have left: STATIC (maintains original position/size) or DYNAMIC (expands to full composition). Default: STATIC .

pipOffset -> (integer)

Sets the PiP window’s offset position in pixels from the closest edges determined by PipPosition . Default: 0 .

pipPosition -> (string)

Determines the corner position of the PiP window. Default: BOTTOM_RIGHT .

pipWidth -> (integer)

Specifies the width of the PiP window in pixels. When this is not set explicitly, pipWidth ’s value will be based on the size of the composition and the aspect ratio of the participant’s video.

pipHeight -> (integer)

Specifies the height of the PiP window in pixels. When this is not set explicitly, pipHeight ’s value will be based on the size of the composition and the aspect ratio of the participant’s video.

destinations -> (list)

Array of Destination objects. A Composition can contain either one destination (channel or s3 ) or two (one channel and one s3 ).

(structure)

Object specifying the status of a Destination.

id -> (string)

Unique identifier for this destination, assigned by IVS.

state -> (string)

State of the Composition Destination.

startTime -> (timestamp)

UTC time of the destination start. This is an ISO 8601 timestamp; note that this is returned as a string .

endTime -> (timestamp)

UTC time of the destination end. This is an ISO 8601 timestamp; note that this is returned as a string .

configuration -> (structure)

Configuration used to create this destination.

name -> (string)

Name that can be specified to help identify the destination.

channel -> (structure)

An IVS channel to be used for broadcasting, for server-side composition. Either a channel or an s3 must be specified.

channelArn -> (string)

ARN of the channel to use for broadcasting. The channel and stage resources must be in the same AWS account and region. The channel must be offline (not broadcasting).

encoderConfigurationArn -> (string)

ARN of the EncoderConfiguration resource. The encoder configuration and stage resources must be in the same AWS account and region.

s3 -> (structure)

An S3 storage configuration to be used for recording video data. Either a channel or an s3 must be specified.

storageConfigurationArn -> (string)

ARN of the StorageConfiguration where recorded videos will be stored.

encoderConfigurationArns -> (list)

ARNs of the EncoderConfiguration resource. The encoder configuration and stage resources must be in the same AWS account and region.

(string)

recordingConfiguration -> (structure)

Array of maps, each of the form string:string (key:value) . This is an optional customer specification, currently used only to specify the recording format for storing a recording in Amazon S3.

format -> (string)

The recording format for storing a recording in Amazon S3.

detail -> (structure)

Optional details regarding the status of the destination.

s3 -> (structure)

An S3 detail object to return information about the S3 destination.

recordingPrefix -> (string)

The S3 bucket prefix under which the recording is stored.

tags -> (map)

Tags attached to the resource. Array of maps, each of the form string:string (key:value) . See Best practices and strategies in Tagging AWS Resources and Tag Editor for details, including restrictions that apply to tags and “Tag naming limits and requirements”; Amazon IVS has no constraints on tags beyond what is documented there.

key -> (string)

value -> (string)

startTime -> (timestamp)

UTC time of the Composition start. This is an ISO 8601 timestamp; note that this is returned as a string .

endTime -> (timestamp)

UTC time of the Composition end. This is an ISO 8601 timestamp; note that this is returned as a string .

Table of Contents

Feedback

User Guide

start-composition¶

Description¶

Synopsis¶

Options¶

Global Options¶

Examples¶

Note

Output¶