USB HDMI-grabber

For Video, any USB camera can be used. Logitech C930 is the most common one for ~100$.
If you have any camcorder or still image camera you get better quality and only need to buy a grabber.
Blackmagic has one for 150$ outputting Thunderbolt - might be possible if your PC has that.

Not tested possiblities (links to amazon.de):

testing grabber and camera compatibility on command line

v4l2-ctl --list-devices
v4l2-compliance
ffmpeg -f v4l2 -framerate 25 -video_size 1920x1080 -i /dev/video0 testfile.h264

I’m using these „4K“-USB-Cams on a Windows-System:
https://www.sub2r.com
I know SUB2r are not cheap, but reasonable (around 799$). There’s no need for extra HDMI-Grabber and there are a lot of interesting features e.g. to switch lenses (CS, C or M12-Mounts)

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