Lena

Same problem.

Yeah, i wanted to add CI, but there's no virtual camera

weird, because on my end (arch, X11) setting `SDL_MOUSE_AUTO_CAPTURE=0` fixes it

The warnings are not device-specific. It is expected behaviour to show the warning even on devices without express keys.

well i kinda forgot about this... i wanted to do more stuff but this works just as well

rebased everything, now it's time to fix all the issues and it should work... took 5 hours to rebase...

`gdigrab` works, although i've encountered a weird issue on the decoder thread where the calculation for how much time to sleep divides by 0 (e.g. `decoder.Framerate.num` is equal to `0`)...

Apparently, the decoder frame rate is just a guess from FFmpeg, so when it's 0 we cam just fall back to a default value, as the worst that's gonna happen...

Apparently `gdigrab` cannot grab UWP windows... https://trac.ffmpeg.org/ticket/7718

i did not forget about this PR, finally gotten around to submitting the [ffmpeg patch](http://ffmpeg.org/pipermail/ffmpeg-devel/2023-December/318122.html) this depends on, we'll see how it goes from there