FAQ

Errors

Video stream not showing in browser

The browser version might be too old. Make sure that the latest version is installed. Or firewall settings can also cause the issue, please try to turn it off once.

Please check if there is any error log on the browser console and Unity debug console.

Web app doesn't run on Safari browser

Check the web server's startup options. In Safari and iOS Safari, WebRTC features cannot be used with http. Instead, https must be used. Also, iOS Safari does not support WebSocket signaling if the server uses a self-signed certificate. Please check here for more information.

Unity's initial startup fails

Confirm you're using a Graphics API and compare requirements of com.unity.webrtc. If you use the hardware encoder, Make sure you're using a graphics card that supports Nvcodec. Also confirm that the latest graphics driver version is installed. See also: com.unity.webrtc documentation.

Web server fails to run

Make sure the port isn't being used by another service.

uGUI can't be operated through a browser.

It is only possible to operate when the focus is on the running application. This problem depends on the availability of com.unity.inputsystem.

Issues with the environment

Which versions of Unity can be used?

It is available on Unity 2019.4.

Which OS can be used?

Windows10 x64, Linux x64, MacOS. Support for UWP(Universal Windows Platform), mobile platform like Android and iOS will be provided later.

Are there any hardware constraints?

The hardware code uses NVCodec, so an NVIDIA graphics card is required. See the NVIDIA site for information on graphics cards that support NVCodec.

Which browsers are supported?

Any browser, as long as it supports WebRTC.

Questions about features

Is it possible to broadcast to multiple devices?

Yes. However, the more devices being transmitted to, the greater the burden on the transmitting device. For example, on a new desktop PC it's possible to transmit 720p video to about 5 devices, but anything more than that will require using an SFU broadcast server.

Is simulcast supported?

Currently, we do not support simulcast.

Can you broadcast the feed from multiple cameras?

Yes. If you use the hardware encoder, make sure to check the limitation of the number of cameras used at the same time. See the NVIDIA document.

How do you increase the video quality?

You can set the resolution of the frame on the CameraStreamer inspector. Keep in mind that video quality depends on the quality of the network.

Is Realtime-Raytracing supported?

Yes. Please see the detail on the HDRP document.

Questions about support

Technical support from Unity can be gotten?

It is available to ask questions on the page of Unity forum. Also please report on Github Issues for reporting bugs or requesting features.

Is it available to deploy Unity to cloud service like GCP as a rendering server?

Unity is not supported using for rendering server.