yangkang2021.github.io

#mediasoup的web端demo的参数

1. 参数说明

```
https://192.168.0.4:3000/?roomId=9527
&info=true                 //显示统计信心
&handler=Chrome74          //指定浏览器信息，做不同浏览器版本的兼容              
&_throttleSecret=foo
&consume=false
&produce=false
&forceTcp=true
&forceVP9=true
&forceH264=true 
&useSimulcast=true,         //控制simulcast
&useSharingSimulcast=true,  //控制屏幕共享的simulcast
&svc=L1T1                   //控制svc
&faceDetection=true         //开启人脸识别
&externalVideo=true         //视频源来自一个用video标签里的mp4
@datachannel=true           //支持datachannel
@e2eKey                     //不知道是啥
```

2. 关于分辨率设置

```
const VIDEO_CONSTRAINS =
{
    qvga : { width: { ideal: 320 }, height: { ideal: 240 } },
    vga  : { width: { ideal: 640 }, height: { ideal: 480 } },
    hd   : { width: { ideal: 1920 }, height: { ideal: 1080 } }
};

this._webcam =
{
    device     : null,
    resolution : 'hd'  //改这里
};
``` ### 3. 关于码率，simulcast，svc设置： > scaleResolutionDownBy控制simulcast降采样比例

```
// Used for simulcast webcam video.
const WEBCAM_SIMULCAST_ENCODINGS =
[
    { scaleResolutionDownBy: 4, maxBitrate: 500000 },
    { scaleResolutionDownBy: 2, maxBitrate: 1000000 },
    { scaleResolutionDownBy: 1, maxBitrate: 5000000 }
];

// Used for VP9 webcam video.
const WEBCAM_KSVC_ENCODINGS =
[
    { scalabilityMode: 'S3T3_KEY' }
];

// Used for simulcast screen sharing.
const SCREEN_SHARING_SIMULCAST_ENCODINGS =
[
    { dtx: true, maxBitrate: 1500000 },
    { dtx: true, maxBitrate: 6000000 }
];

// Used for VP9 screen sharing.
const SCREEN_SHARING_SVC_ENCODINGS =
[
    { scalabilityMode: 'S3T3', dtx: true }
];
``` ### 4. 开启人脸识别  ![](.13-mediasoup的web端demo的参数_images/259f1599.png) ### 5. 开启外部视频  ![](.13-mediasoup的web端demo的参数_images/ad39a91a.png)