The camera I used for rescans for a long time was stolen in November, so I’ve quickly adjusted to capturing video directly — not sure why I didn’t make the change sooner, to be honest! So easy to boot up OBS and record.
All of my equipment runs into an Extron ISS506 seamless switcher, and I run its VGA output into an Analog Way upscaler. Then a passive DVI-D to HDMI converter into a cheap HDMI capture card. Have experimented with more expensive capture cards and don’t notice any difference, even when inspecting very closely.