I guessed that it something with DX, but I checked with DX all seems to be ok. Guys do you use Windows 10 64 bit? Can you check if multimediawidgets/camera example work for you with Qt 5.9 Beta 3 and MSVC 2017, 2015, mingw 5.3.0?

I have no idea what can be wrong. For example, camera works in Skype. But in Qt it detects, initialized (I see green led near the camera), but I don't see anything in viewfinder, just black screen.

With plugins seems all to be ok...

I guess that I found the problem. It's seems that it's because of missing API-MS-WIN-APPMODEL-RUNTIME-L1-1-2.DLL and so on, which is a part of MSVC 2015 redistributible package (Am I right?).

I tried to install vcredist_msvc2015_x64.exe which ships with Qt. And I got following error in installation:

0x80070666 - Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.

I have installed vcredist 2013 and 2017, but not 2015 which fails to install...


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