> **Experimental**
>
> `@aws-cdk/aws-medialive-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# Scte20Detection

SCTE-20 detection mode for an embedded caption source.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/caption-selector.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0-alpha.0/packages/@aws-cdk/aws-medialive-alpha/lib/caption-selector.ts#L60)

## 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 scte20Detection = medialive_alpha.Scte20Detection.of('value');
```

## Properties

- `AUTO`: [Scte20Detection](/cdk/api/v2/docs/@aws-cdk_aws-medialive-alpha.Scte20Detection.html) (required) (static) — Handle streams with intermittent or non-aligned SCTE-20 and embedded captions.

- `OFF`: [Scte20Detection](/cdk/api/v2/docs/@aws-cdk_aws-medialive-alpha.Scte20Detection.html) (required) (static) — Do not detect SCTE-20 captions.

- `value`: string (required) — The underlying string value passed to CloudFormation.

## Methods

- `of(value: string): Scte20Detection // chainable` (static) — A value not yet modelled by AWS CDK.