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

Options for an embedded (CEA-608/708) caption source.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/caption-selector.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-medialive-alpha/lib/caption-selector.ts#L82)

## 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';

declare const convert608To708: medialive_alpha.Convert608To708;
declare const scte20Detection: medialive_alpha.Scte20Detection;
const embeddedCaptionSourceOptions: medialive_alpha.EmbeddedCaptionSourceOptions = {
  convert608To708: convert608To708,
  scte20Detection: scte20Detection,
  source608ChannelNumber: 123,
};
```

## Properties

- `convert608To708`: [Convert608To708](/cdk/api/v2/docs/@aws-cdk_aws-medialive-alpha.Convert608To708.html) = Convert608To708.DISABLED — Whether to upconvert 608 captions to 708.

- `scte20Detection`: [Scte20Detection](/cdk/api/v2/docs/@aws-cdk_aws-medialive-alpha.Scte20Detection.html) = Scte20Detection.OFF — SCTE-20 detection mode.

- `source608ChannelNumber`: number — The 608/708 channel number within the video track to extract captions from.

  **Default:** MediaLive service default