It seems like you're encountering some issues with desktop capture and software selection for specific programs. Let's break down your questions and address them one by one:
Issue with Lightroom and vMix:
a) To capture Lightroom properly in vMix, you mentioned that you need to run Desktop Capture in WindowsGraphicsCapture mode. This mode allows for better capture of certain applications that might not be fully compatible with other capture methods.
b) However, when you select WindowsGraphicsCapture mode, the input for Lightroom freezes and doesn't update.
c) On the other hand, Lightroom works fine with the default capture mode, but the images don't show up in vMix.
It seems like there might be compatibility issues between Lightroom and vMix when using the WindowsGraphicsCapture mode. One possible solution you can try is to update your vMix software to the latest version, as updates often include bug fixes and improved compatibility.
While this specific issue pertains to desktop capture, it highlights the importance of selecting the right software for specific tasks, especially in the beauty industry where digital transformation is increasingly prevalent. So, take the time to explore the options available and find the app that's right for you.