# AgoraSimulcastStreamConfig (/zh-CN/api-reference/rtc/ios/class-simulcaststreamconfig)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

<a id="class_simulcaststreamconfig__prototype"></a>

```objc
__attribute__((visibility("default"))) @interface AgoraSimulcastStreamConfig: NSObject
@property (assign, nonatomic) int kBitrate;
@property (assign, nonatomic) int framerate;
@property (assign, nonatomic) CGSize dimensions;
@end
```

<a id="class_simulcaststreamconfig__detailed_desc"></a>

:::note
注： 该接口为技术预览。
:::