This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::MediaLive::Channel RtmpGroupSettings
<a name="aws-properties-medialive-channel-rtmpgroupsettings"></a>

The configuration of an RTMP output group.

The parent of this entity is OutputGroupSettings.

## Syntax
<a name="aws-properties-medialive-channel-rtmpgroupsettings-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-medialive-channel-rtmpgroupsettings-syntax.json"></a>

```
{
  "[AdMarkers](#cfn-medialive-channel-rtmpgroupsettings-admarkers)" : {{[ String, ... ]}},
  "[AuthenticationScheme](#cfn-medialive-channel-rtmpgroupsettings-authenticationscheme)" : {{String}},
  "[CacheFullBehavior](#cfn-medialive-channel-rtmpgroupsettings-cachefullbehavior)" : {{String}},
  "[CacheLength](#cfn-medialive-channel-rtmpgroupsettings-cachelength)" : {{Integer}},
  "[CaptionData](#cfn-medialive-channel-rtmpgroupsettings-captiondata)" : {{String}},
  "[IncludeFillerNalUnits](#cfn-medialive-channel-rtmpgroupsettings-includefillernalunits)" : {{String}},
  "[InputLossAction](#cfn-medialive-channel-rtmpgroupsettings-inputlossaction)" : {{String}},
  "[RestartDelay](#cfn-medialive-channel-rtmpgroupsettings-restartdelay)" : {{Integer}}
}
```

### YAML
<a name="aws-properties-medialive-channel-rtmpgroupsettings-syntax.yaml"></a>

```
  [AdMarkers](#cfn-medialive-channel-rtmpgroupsettings-admarkers): {{
    - String}}
  [AuthenticationScheme](#cfn-medialive-channel-rtmpgroupsettings-authenticationscheme): {{String}}
  [CacheFullBehavior](#cfn-medialive-channel-rtmpgroupsettings-cachefullbehavior): {{String}}
  [CacheLength](#cfn-medialive-channel-rtmpgroupsettings-cachelength): {{Integer}}
  [CaptionData](#cfn-medialive-channel-rtmpgroupsettings-captiondata): {{String}}
  [IncludeFillerNalUnits](#cfn-medialive-channel-rtmpgroupsettings-includefillernalunits): {{String}}
  [InputLossAction](#cfn-medialive-channel-rtmpgroupsettings-inputlossaction): {{String}}
  [RestartDelay](#cfn-medialive-channel-rtmpgroupsettings-restartdelay): {{Integer}}
```

## Properties
<a name="aws-properties-medialive-channel-rtmpgroupsettings-properties"></a>

`AdMarkers`  <a name="cfn-medialive-channel-rtmpgroupsettings-admarkers"></a>
Choose the ad marker type for this output group. MediaLive will create a message based on the content of each SCTE-35 message, format it for that marker type, and insert it in the datastream.  
*Required*: No  
*Type*: Array of String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`AuthenticationScheme`  <a name="cfn-medialive-channel-rtmpgroupsettings-authenticationscheme"></a>
An authentication scheme to use when connecting with a CDN.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`CacheFullBehavior`  <a name="cfn-medialive-channel-rtmpgroupsettings-cachefullbehavior"></a>
Controls behavior when the content cache fills up. If a remote origin server stalls the RTMP connection and doesn't accept content fast enough, the media cache fills up. When the cache reaches the duration specified by cacheLength, the cache stops accepting new content. If set to disconnectImmediately, the RTMP output forces a disconnect. Clear the media cache, and reconnect after restartDelay seconds. If set to waitForServer, the RTMP output waits up to 5 minutes to allow the origin server to begin accepting data again.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`CacheLength`  <a name="cfn-medialive-channel-rtmpgroupsettings-cachelength"></a>
The cache length, in seconds, that is used to calculate buffer size.  
*Required*: No  
*Type*: Integer  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`CaptionData`  <a name="cfn-medialive-channel-rtmpgroupsettings-captiondata"></a>
Controls the types of data that pass to onCaptionInfo outputs. If set to all, 608 and 708 carried DTVCC data is passed. If set to field1AndField2608, DTVCC data is stripped out, but 608 data from both fields is passed. If set to field1608, only the data carried in 608 from field 1 video is passed.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`IncludeFillerNalUnits`  <a name="cfn-medialive-channel-rtmpgroupsettings-includefillernalunits"></a>
Property description not available.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`InputLossAction`  <a name="cfn-medialive-channel-rtmpgroupsettings-inputlossaction"></a>
Controls the behavior of this RTMP group if the input becomes unavailable. emitOutput: Emit a slate until the input returns. pauseOutput: Stop transmitting data until the input returns. This does not close the underlying RTMP connection.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RestartDelay`  <a name="cfn-medialive-channel-rtmpgroupsettings-restartdelay"></a>
If a streaming output fails, the number of seconds to wait until a restart is initiated. A value of 0 means never restart.  
*Required*: No  
*Type*: Integer  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)