> **Experimental**
>
> `@aws-cdk/aws-medialive-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# H264RateControl

H.264 rate control. Use the static factory methods to create.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/video-codec-settings.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-medialive-alpha/lib/video-codec-settings.ts#L1027)

## Example

```ts
declare const stack: Stack;
declare const input: medialive.IInput;
declare const bucket: s3.IBucket;

const video = medialive.EncodeConfiguration.video({
  name: 'video_720p',
  codec: medialive.VideoCodecSettings.h264({
    rateControl: medialive.H264RateControl.cbr({ bitrate: Bitrate.mbps(3) }),
    framerate: medialive.Framerate.FPS_30,
  }),
  width: 1280,
  height: 720,
});

const audio = medialive.EncodeConfiguration.audio({
  name: 'audio_aac',
  codec: medialive.AudioCodecSettings.aac({ bitrate: Bitrate.kbps(192) }),
});

new medialive.Channel(stack, 'Channel', {
  inputs: [{ input }],
  outputGroups: [
    medialive.OutputGroupConfiguration.hls({
      name: 'hls',
      destinations: [medialive.OutputDestination.toBucket(bucket, 'live/stream')],
      outputs: [{ encodes: [video, audio], outputName: 'hls_out' }],
    }),
  ],
});
```

## Methods

- `cbr(props: CbrRateControlProps): H264RateControl // chainable` (static) — Constant bitrate.

- `qvbr(props: QvbrRateControlProps): H264RateControl // chainable` (static) — Quality-defined variable bitrate.

- `vbr(props: VbrRateControlProps): H264RateControl // chainable` (static) — Variable bitrate.