Can we control the Bandwidth for webrtc Screensharing

[chetan batra]

I am familiar with webrtc bandwidth control for video streams. I am able to specify maximum bandwidth for video steams(P2P connections). But when I tried to set max bitrate i.e. specify the bandwidth for screen sharing P2P connection I am getting following error.

Uncaught (in promise) DOMException: Read-only field modified in setParameters().

For code reference I am using following method for bandwidth

'RTCRtpSender' in window

'setParameters' in window.RTCRtpSender.prototype

I just want to know if we can control the bandwidth of screen share over webrtc or I am doing something wrong.

Thanks in advance

Chetan

[Philipp Hancke]

modifying https://webrtc.github.io/samples/src/content/peerconnection/bandwidth/ to use getDisplayMedia instead of getUserMedia works just fine here. Are you calling getParameters before calling setParameters?

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[chetan batra]

Thanks Philipp for replying.

yes I am calling getParamets before setParameters.

Also I am simply doing following
```
let sender = pc.getSenders()[1]; 

let parameters = sender.getParameters();

if (isEmpty(parameters.encodings)) {

parameters.encodings = [{}];

}

parameters.encodings[0].maxBitrate = bitrate;

sender.setParameters(parameters); ```` 

[chetan batra]

Thanks Philipp for replying.

yes I am calling getParamets before setParameters.

Also I am simply doing following

let sender = pc.getSenders()[1];

let parameters = sender.getParameters();

if (isEmpty(parameters.encodings)) {

parameters.encodings = [{}];

}

parameters.encodings[0].maxBitrate = bitrate;

sender.setParameters(parameters);

On Monday, 10 February 2020 18:26:38 UTC+5:30, Philipp Hancke wrote:

modifying https://webrtc.github.io/samples/src/content/peerconnection/bandwidth/ to use getDisplayMedia instead of getUserMedia works just fine here. Are you calling getParameters before calling setParameters?

Am Mo., 10. Feb. 2020 um 13:50 Uhr schrieb chetan batra <chetan...@gmail.com>:

I am familiar with webrtc bandwidth control for video streams. I am able to specify maximum bandwidth for video steams(P2P connections). But when I tried to set max bitrate i.e. specify the bandwidth for screen sharing P2P connection I am getting following error.

Uncaught (in promise) DOMException: Read-only field modified in setParameters().

For code reference I am using following method for bandwidth

'RTCRtpSender' in window

'setParameters' in window.RTCRtpSender.prototype

I just want to know if we can control the bandwidth of screen share over webrtc or I am doing something wrong.

Thanks in advance

Chetan

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[Philipp Hancke]

which looks similar enough to the sample code. Have you checked what is different in your code, like the timing of when this is called?

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[chetan batra]

Its working fine for P2P video streams, not working for screen share only. So checking if its possible to set bandwidth for screen sharing connection.

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