Importing OpenCV alongside D3DShot results in COMError at create() about d3dshot HOT 4 CLOSED

This is indeed peculiar. For what it's worth, I can't reproduce it on my end.

This is with opencv-python==4.1.0.25 and D3DShot==0.1.3 on Windows 10 64 bit.

The error message you are getting essentially means that it's impossible to create a DirectX 11 Device that can do desktop duplication with the loaded DLLs. Your system DLLs are clearly fine since it all works without OpenCV.

My wild guess: OpenCV has its own capture routines and on Windows it does so by hooking into Direct3D using a shim DLL that doesn't have the feature level required to create a DirectX 11 Device that can do desktop duplication (i.e. it's an older DLL than the system one). When I bootstrap D3DShot, If the shim is loaded, the ctypes module finds that instead when I request a DLL by name.

What version of OpenCV are you using? How was it built? If you didn't compile it, are you using the most appropriate wheel for your system? Just trying to think of reasons why it works on my system and not yours.

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Any update on this? I don't want to close the issue because there is definitely something interesting lying here but I can't reproduce it as shown above.

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It has been so long that I do not recall if I solved the issue before halting my project. I have plans to continue working on my project that uses both OpenCV and D3DShot later this year (and might rerun into the issue). So I guess this issue can be closed and I will comment on this issue if I run into the same error again later.

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Alright, I will close it, but do reopen if you encounter it again. Thanks

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