> **Experimental**
>
> `@aws-cdk/aws-medialive-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# CmafCaptionLanguageMapping

Maps a captions channel to an ISO 639-2 language code for a CMAF Ingest output group.

Unlike `CaptionLanguageMapping`, the CMAF Ingest variant has no language description.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/output-group.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-medialive-alpha/lib/output-group.ts#L238)

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as medialive_alpha from '@aws-cdk/aws-medialive-alpha';
const cmafCaptionLanguageMapping: medialive_alpha.CmafCaptionLanguageMapping = {
  captionChannel: 123,
  languageCode: 'languageCode',
};
```

## Properties

- `captionChannel`: number (required) — The closed caption channel number (1-4).

- `languageCode`: string (required) — A three-character ISO 639-2 language code.