# About audio rendition groups
<a name="ARGs-about"></a>

## Standards compliance
<a name="ARG-compliance"></a>

This MediaLive implementation of audio rendition groups is compliant with *HTTP Live Streaming draft-pantos-http-live-streaming-18* section 4.3.4.1.1. 

## Examples
<a name="ARG-examples"></a>

### Example 1
<a name="ARGs-example-1"></a>

The HLS output group consists of:
+ One video output.
+ Three audio outputs (perhaps English, French, Spanish) that all belong to the same audio rendition group.

![\[Diagram showing a box labeled "RIG 1" containing four smaller boxes: "Video 1" and three "Audio" boxes.\]](http://docs.aws.amazon.com/medialive/latest/ug/images/ARG_oneV_threeA.png)


### Example 2
<a name="ARG-example-2"></a>

The HLS output group consists of:
+ One *video high* output.
+ One *video medium* output.
+ One *video low* output.
+ Three audio outputs (English, French, Spanish) that all belong to the same audio rendition group.

![\[Diagram showing three video inputs connecting to a single audio group with three audio outputs.\]](http://docs.aws.amazon.com/medialive/latest/ug/images/ARG_threeV_threeA.png)


### Example 3
<a name="ARG-3"></a>

The HLS output group consists of:
+ One *video high* output.
+ One *video low* output.
+ Two audio outputs (English, French) that each use the AAC codec. These outputs both belong to the same audio rendition group, RG1. 
+ Two audio outputs (English, French) that each use the Dolby Digital codec. These outputs both belong to the same audio rendition group, RG2. 
+ The video high output is associated with both audio rendition groups.
+ The video low output is associated only with the RG1 audio rendition group.

![\[Diagram showing video inputs connected to AAC and Dolby audio group outputs.\]](http://docs.aws.amazon.com/medialive/latest/ug/images/ARG_twoV_twoA.png)