# Audio requirements


## Supported audio


All the source audio in the MediaLive inputs must meet the following requirements:
+ Sample-rate frequency: 48 kHz (48000 samples per second).
+ Up to 8 audio channels, with interleaved samples.
+ The audio must conform to one of the coding modes and channel layouts specified in the following table.

In the table, read across each row to identify the channel layout for the coding mode that is identified in the first cell.


| Number of channels |  Coding mode  | Ch 1 | Ch 2 | Ch 3 | Ch 4 | Ch 5 | Ch 6 | Ch 7 | Ch 8 | 
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 
| 1 |  Mono  |  Left  |  |  |  |  |  |  |  | 
| 2 |  Stereo  |  Stereo left  |  Stereo right  |  |  |  |  |  |  | 
| 6 |  5.1 audio  |  Front left  |  Front right  |  Center  |  LFE  |  Surround left  |  Surround right  |  |  | 
| 8 |  5.1 audio plus stereo  |  Front left  |  Front right  |  Center  |  LFE  |  Surround left  |  Surround right  |  Stereo left  |  Stereo right  | 

## Recommended minimum bitrates


We strongly recommend following the minimum audio bitrates listed in the following table. If you set the audio bitrates lower than the recommended values, your watermarks might not be reliably detected.

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/medialive/latest/ug/supportedaudio.html)