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

Options for Flow Size.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/flow.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-mediaconnect-alpha/lib/flow.ts#L197)

## Example

```ts
declare const stack: Stack;
declare const role: iam.IRole;
declare const securityGroup: ec2.ISecurityGroup;
declare const subnet: ec2.ISubnet;

const efaInterface = VpcInterface.define({
  vpcInterfaceName: 'efa-interface',
  role: role,
  securityGroups: [securityGroup],
  subnet: subnet,
  networkInterfaceType: NetworkInterface.EFA,  // Required for CDI
});

const videoStream = MediaStream.video({
  mediaStreamId: 1,
  mediaStreamName: 'video',
  videoFormat: MediaVideoFormat.HD_1080P,
  fmtp: {
    exactFramerate: Framerate.FPS_29_97,
    par: PixelAspectRatio.SQUARE,
  },
});

const flow = new Flow(stack, 'MyCdiFlow', {
  flowSize: FlowSize.LARGE_4X,  // Required for CDI and JPEG XS
  vpcInterfaces: [efaInterface],
  mediaStreams: [videoStream],
  source: SourceConfiguration.cdi({
    flowSourceName: 'cdi-source',
    vpcInterface: efaInterface,
    port: 5000,
    maxSyncBuffer: 100,
    mediaStreamSourceConfigurations: [{
      encoding: Encoding.RAW,
      mediaStream: videoStream,
    }],
  }),
});
```

## Properties

- `LARGE`: [FlowSize](/cdk/api/v2/docs/@aws-cdk_aws-mediaconnect-alpha.FlowSize.html) (static) — Large flow size.

  Required when the flow uses NDI sources or outputs. Supports
  transport stream distribution plus NDI; does not support CDI or JPEG XS.

- `LARGE_4X`: [FlowSize](/cdk/api/v2/docs/@aws-cdk_aws-mediaconnect-alpha.FlowSize.html) (static) — Option for large 4x flow size.

  Required for JPEG XS and CDI protocols. Does not support transport streams or NDI.

- `MEDIUM`: [FlowSize](/cdk/api/v2/docs/@aws-cdk_aws-mediaconnect-alpha.FlowSize.html) (static) — Medium flow size.

  The default — standard transport stream distribution; does not
  support NDI, CDI, or JPEG XS.

- `value`: string — The flow size string value.

## Methods

- `of(value: string): FlowSize // chainable` (static) — Use a custom flow size value.

  **Parameters**

  - `value` — The flow size string value.

- `toString(): string` — Returns the string value.