Editor freezes on shutdown after camera fails to render

[rakkar1974]

Editor is freezing when starting multiple times, using VideoKitCameraManager. It always works the first time. Then there is about a 25% chance of freezing when stopping play mode every subsequent run. I know in advance when it will freeze because the camera doesn't initialize.

I thought the problem was domain reload, but after turning off domain reload it still happened.

In the inspector window, I disabled the game object that held VideoKitCameraManager and the editor continued to work. However, with it disabled, I then removed the component in the editor window the the editor froze up.

This happens with the sample from your website

[rakkar1974]

I tried a similar experiment with the Unity WebCamTexture and the Windows Camera app. Both of them act similarly at about the same % chance to fail to render on start. However, with those two I am able to stop play mode and stop the app normally, and the camera will work if I try again.

Oddly enough, the same camera has never failed to start rendering when using Google Meet.

[olokobayusuf]

I tried a similar experiment with the Unity WebCamTexture and the Windows Camera app. Both of them act similarly at about the same % chance to fail to render on start.

This is good to know. It means the root cause is instability in Windows MediaFoundation.

However, with those two I am able to stop play mode and stop the app normally, and the camera will work if I try again.

Yup we'll fix this in the upcoming update.

Oddly enough, the same camera has never failed to start rendering when using Google Meet.

If you're using Google Meet in a browser, then it's likely cos your browser effectively keeps the camera around, even though it isn't streaming. So you're effectively not doing a cold start

[rakkar1974]

This also occurs with a Logitech BRIO 300

[olokobayusuf]

This has been fixed in the upcoming VideoKit 0.0.18 update. Feel free to test out the current alpha builds.