WebRTC package FAQ

kazuki_unity729 · July 5, 2022, 2:54am

Please feel free to ask questions and sugfgestions about WebRTC packge.

Fire_Preserver · September 10, 2022, 12:35am

Does renderstream + WebRTC support adaptive bitrate streaming (e.g. for wireless networks)? Or does the server just set the bitrate according to the rates reported by the client’s browser?
Do you have any recommendations when streaming to a mobile phone over 4G/5G ?

kazuki_unity729 · September 13, 2022, 2:35am

FYI

skalasib · October 9, 2022, 5:16pm

How do I compile WebRTC native code into dynamic shared library file that can be used by the WebRTC unity package?

The end-to-end latency provided by default WebRTC is as high as 150-200 ms even with when network latency is <5 ms. I am making changes to WebRTC native code to reduce latency. I wanted to know what is the correct way to compile webRTC to be used as a plugin in the WebRTC package.

I see a unityplugin folder in the webrtc codebase, but no instructions on how to compile. Only Android instructions are present, but running ninja -C out/Default webrtc_unity_plugin doesn’t work. (ninja: error: unknown target ‘webrtc_unity_plugin’)

kazuki_unity729 · October 11, 2022, 2:52am

Have you checked it?

github.com

Unity-Technologies/com.unity.webrtc/blob/main/Plugin~/README.md

# Build Native Plugin

This guide will cover building and deploying the native plugin `com.unity.webrtc` depends on.

## Developing environment

Install dependencies to make development environment.

### Windows

On windows, first, you need to install **Visual Studio 2022**. The build process use the **clang** compiler. To install clang, see [MSDN](https://docs.microsoft.com/en-us/cpp/build/clang-support-msbuild?view=msvc-170). And [chocolatey](https://chocolatey.org/) is used to install.

```powershell
# Install CUDA
choco install cuda --version=11.0.3

# Install Windows SDK
# WARNING: If you have versions of Windows SDK earlier than Version 22H2,
# compiling the plugin will fail. Make sure to uninstall earlier versions.
choco install -y vcredist2010 vcredist2013 vcredist140 windows-sdk-11-version-22h2-all

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a80008a · November 4, 2022, 9:09am

Hi~

Developing desktop programs using Unity (using Unity WebRTC)
Developing apps with android studio (using google webrtc)
(Not building Android with Unity)

Are Unity WebRTC and Google webrtc connected?
Is there a Unity WebRTC library that I can use in Android studio?

kazuki_unity729 · November 8, 2022, 3:01am

Are Unity WebRTC and Google webrtc connected?
Yes.

Is there a Unity WebRTC library that I can use in Android studio?
Could you tell me more detail?

mcfadyeni · November 18, 2022, 2:15am

Hey.

Just getting started with Unity’s WebRTC package and I’m curious about the GC allocation/performance impact.

I’m planning on using Data Channels pretty heavily to send messages (sending/receiving upwards of 120 small msg per second) and since this plugin seems to provide a fresh byte[ ] buffer on every OnMessage call I wondered how that’s allocated/how that would impact perf.

kazuki_unity729 · November 22, 2022, 2:42am

@mcfadyeni
You are right.
We haven’t implemented the API for optimized method for receiving message from DataChannel.
We will add the task for the issue. Thank you!

a80008a · January 5, 2023, 8:59am

Hi~
I am using webRTC 3.0.0-pre.3.
The offerToReceiveAudio option cannot be set to false because the RTCOOfferOptions function has been removed.
Is there any way to change the offerToReceiveAudio option?

kazuki_unity729 · January 11, 2023, 3:02am

Hi, offerToReceiveAudio option is deprecated in Web API.

This article might be helped you to understand.

Zishaan7 · January 20, 2023, 1:46pm

Hi,
Can I use WebRTC to make a unity mobile app with video chat and play games with friends, and the app will have multiple small games, to play.

Waiting for an answer.
Thanks.

kazuki_unity729 · January 24, 2023, 2:35am

It is technically possible, what kind of issue do you have?

Zishaan7 · January 24, 2023, 10:08am

I am having an issue with the signaling using websocketsSharp, can’t seem to configure it, any suggestions for free web-socket servers that I can use to make a handshake between 2 separate devices? currently using google’s STUN server in RTCIceserver.

p.s: pardons if I made any mistakes there I am still a newbie.

kannan-xiao4 · January 31, 2023, 2:54am

First, please try the sample below.
If you have any problems with it, please post again.
https://docs.unity3d.com/Packages/com.unity.renderstreaming@3.1/manual/sample-bidirectional.html

NolanChan · April 10, 2023, 8:26am

I have some problems about the following code:
RTCIceServer[ ] iceServers = settings.iceServers.OfType().ToArray();
I opened debug and found that setting.iceServers has a value, but when assigned to RTCIceServer[ ] iceServers, the return array is empty.
This makes me very confused.
Did I miss something?
I am using 3.1.0-exp.6

kazuki_unity729 · April 11, 2023, 5:53am

I assume that iceServers defines as “IReadOnlyCollection”, so you need to get as a “IceServer” collection.

NolanChan · April 11, 2023, 7:43am

Thanks, but I still have some questions about this.
I’m trying to run it on the cloud, so I filled in the stun/turn configuration in renderstreaming setting.Verified with Trickle ICE, the stun/turn server is usable. But the RtcpeerConnection failed.
Then I found out that Unity on the cloud did not connect to the stun/turn server and only sent local same LAN icecandidate.
Then I encountered the problem mentioned above.
What else do I need to do?

kazuki_unity729 · April 18, 2023, 6:16am

You mean that there might be bugs in implementations about ice servers, right?
We need to check the issue.

Please tell me which version of Unity Render Streaming.
And I would like to see the screenshot of the project settings window which you set ICE parameters.

kazuki_unity729 · May 2, 2023, 5:40am

Related issues.

github.com/Unity-Technologies/UnityRenderStreaming

[BUG]: SignalingManager ignoring command line argument

opened 03:29AM - 24 Apr 23 UTC

closed 02:13AM - 16 Aug 23 UTC

pyropig

bug waiting for release issued

### Package version 3.1.0-exp.6 ### Environment ```markdown * OS: Wind…ows10 * Unity version: Unity 2022.2.2f1 * Graphics API: Vulcan/OpenGL * Browser: Google chrome ver 112.0.5615.137 (64 bit) ``` ### Steps To Reproduce 1. Build the project using renderStreaming in Production env 2. run the project unity.exe in cmd with commandline arg -signalingUrl <url> 3. observe the signaling manager ignores the arg and still signals to default setting url ### Current Behavior Currently, when signaling manager is enabled with run on awake, its Awake() function calls _Run() with a signaling setting created from project default setting. However, _Run() only use parsed commandline argument when it get a null for signaling setting, which means it completely ignores whatever I give it in commandline. ### Expected Behavior It should correctly take commandline arg when starting from batch. ### Anything else? _No response_

https://github.com/Unity-Technologies/UnityRenderStreaming/issues/502

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WebRTC package FAQ

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