# Enumeration SIMULCAST_STREAM_MODE (/zh-CN/api-reference/rtc/web/enums/simulcast-stream-mode)

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

:::info[自从]
*4.24.1*
:::

## Enumeration members [#enumeration-members]

<a id="auto_simulcast_stream"></a>

### AUTO_SIMULCAST_STREAM [#auto_simulcast_stream]

<ApiSignature>

AUTO_SIMULCAST_STREAM: = -1

</ApiSignature>

-1：默认不发送小流，直至收到接收端发起的订阅小流申请时，开始自动发送小流。

<a id="disable_simulcast_strem"></a>

### DISABLE_SIMULCAST_STREM [#disable_simulcast_strem]

<ApiSignature>

DISABLE_SIMULCAST_STREM: = 0

</ApiSignature>

0：始终不发送小流。

<a id="enable_simulcast_stream"></a>

### ENABLE_SIMULCAST_STREAM [#enable_simulcast_stream]

<ApiSignature>

ENABLE_SIMULCAST_STREAM: = 1

</ApiSignature>

1：始终发送小流。