# AdvanceOptions (/zh-CN/api-reference/rtc/csharp-windows/class-advanceoptions)

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<a id="class_advanceoptions__prototype"></a>

```csharp
public class AdvanceOptions
    {
        public ENCODING_PREFERENCE encodingPreference;
        public COMPRESSION_PREFERENCE compressionPreference;
        public bool encodeAlpha;

        public AdvanceOptions()
        {
            this.encodingPreference = ENCODING_PREFERENCE.PREFER_AUTO;
            this.compressionPreference = COMPRESSION_PREFERENCE.PREFER_LOW_LATENCY;
            this.encodeAlpha = false;
        }

        public AdvanceOptions(ENCODING_PREFERENCE encoding_preference, COMPRESSION_PREFERENCE compression_preference, bool encode_alpha)
        {
            this.encodingPreference = encoding_preference;
            this.compressionPreference = compression_preference;
            this.encodeAlpha = encode_alpha;
        }

    }
```

<a id="class_advanceoptions__detailed_desc"></a>

<a id="class_advanceoptions__parameters"></a>

## 属性 [#属性]

<ParameterList>
<a id="encodingpreference"></a>
<Parameter name="encodingPreference">

视频编码器偏好。详见 [ENCODING_PREFERENCE](/zh-CN/api-reference/rtc/csharp-windows/enum-encodingpreference)。

</Parameter>
<a id="compressionpreference"></a>
<Parameter name="compressionPreference">

视频编码的压缩偏好。详见 [COMPRESSION_PREFERENCE](/zh-CN/api-reference/rtc/csharp-windows/enum-compressionpreference)。

</Parameter>
<a id="encodealpha"></a>
<Parameter name="encodeAlpha">

当视频帧包含 Alpha 通道数据时，设置是否将 Alpha 数据编码并发送至远端：

- `true`：对 Alpha 数据进行编码发送。
- `false`：（默认）不对 Alpha 数据进行编码发送。

</Parameter>
</ParameterList>