DllNotFoundException: hl2ss_ulm.dll assembly:<unknown assembly> type:<unknown type> member:(null)

[yli265543-spec]

After generating hl2ss_ulm.dll, place it in Unity's Plugins folder, but when running the program, it cannot find hl2ss_ulm.dll, and the error reported is DllNotFoundException: hl2ss_ulm.dll assembly: type: member:(null)

[jdibenes]

Hi, did you also copy the OpenCV and FFmpeg dlls into the Assets/Plugins/x64 folder?
It should look like this:

[yli265543-spec]

I made sure I put all these dll files in the AssetsPluginsx64 path, but I'm still getting the same error.

[yli265543-spec]

I am using Unity 2021.3.22f1.