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

An optional transcode preset for the channel.

This is selectable only for ADVANCED_HD and ADVANCED_SD channel types.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/channel.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-ivs-alpha/lib/channel.ts#L110)

## Example

```ts
const myChannel = new ivs.Channel(this, 'myChannel', {
  type: ivs.ChannelType.ADVANCED_HD,
  preset: ivs.Preset.CONSTRAINED_BANDWIDTH_DELIVERY,
});
```

## Members

| Member | Description |
| --- | --- |
| `CONSTRAINED_BANDWIDTH_DELIVERY` | Use a lower bitrate than STANDARD for each quality level. |
| `HIGHER_BANDWIDTH_DELIVERY` | Use a higher bitrate for each quality level. |

## Referenced by

- [`ChannelProps`](/v2/docs/@aws-cdk_aws-ivs-alpha.ChannelProps).preset