TimeoutException: Failed to start WebCam

[DonghwanKIM0101]

Plugin Version or Commit ID

v0.10.1

Unity Version

2021.3.3f1

Your Host OS

macOS Monterey 12.4

Target Platform

UnityEditor

Target Device

MacBook Pro (16-inch, 2019)

[Windows Only] Visual Studio C++ and Windows SDK Version

No response

[Linux Only] GCC/G++ and GLIBC Version

bazel: 5.0.0
gcc, g++: 13.1.6
python: 3.9.10

[Android Only] Android Build Tools and NDK Version

No response

[iOS Only] XCode Version

No response

Build Command

python3.9 build.py build --desktop cpu -vv

Bug Description

The situation is quite simple to #392

However, my MacBook is Intel Mac and I can't find TextureFrame#ChangeNameFrom.

Also, I put Debug.Log in TexutreFrame#GetNativeTexturePtr, but it isn't called.

Importantly, the error is occurred without scene change.

Sometimes, I can see the web cam screen in the first scene (face detection), and when I change to other scene the error is occurred, but almost all errors occur first scene that means I can't see the web cam screen at all.

• When I build old version; 0.9.1 and run in unity 2020.3.~~, it works well.

Steps to Reproduce the Bug

1. Run python3.9 build.py build --desktop cpu -vv
2. Start Play Mode and the below error occurs.
   TimeoutException: Failed to start WebCam

Log

Editor.log

Screenshot/Video

No response

Additional Context

No response

[homuler]

Sometimes, I can see the web cam screen in the first scene (face detection), and when I change to other scene the error is occurred, but almost all errors occur first scene that means I can't see the web cam screen at all.

This error has been occurring occasionally before, but I agree that it's happening more often than before.
If this error occurs, it is usually necessary to restart UnityEditor.

[DonghwanKIM0101]

I edit timeoutFrame in WebCamSource#WaitForWebCamTexture from 500 to 5000, and the frequency of errors has been significantly reduced.

I close the issue, but I wonder this approach is proper way to handle the error.

[homuler]

Thank you!
Hmm, that's interesting.

In my case (on Linux Desktop), when it happens, it happens often, and when it doesn't, it doesn't happen at all (and now I happen to be unable to reproduce it at all).
Can you tell me how much the count will eventually go up in your environment?

MediaPipeUnityPlugin/Assets/MediaPipeUnity/Samples/Common/Scripts/ImageSource/WebCamSource.cs

Line 264 in 6efa5e1

yield return new WaitUntil(() => count++ > timeoutFrame || webCamTexture.width > 16);

[DonghwanKIM0101]

I'm not sure this result is helpful, but I test it several times.

1. start scene: 768
2. change scene: 726
3. change scene: 757
4. change scene: 704
5. change scene: 722
6. restart unity editor: 756
7. change scene: 700
8. change scene: 747
9. change scene: 710
10. change scene: 744
11. stop and re-play (without restarting editor): 615
12. change scene: 720
13. change scene: 712
14. change scene: 739
15. change scene: 785

[homuler]

Thanks!
It seems that timeoutFarme should be at least about 2000.
If you send me a PR, I'll merge it.

[yalegria]

I encountering this issue too. I am on Mac OS M1.

I got it to go away by setting timeoutFrame to 3000. It seems that 2000 is too low.