Hi Frank,
What a great project! I will PM you for a couple of PCBs if available
Is there any chance to make something like this with SDI input? That would allow HD signals to be used as an input. On Aliexpress you can get a very inexpensive HDMI to SDI converter. like this one:
https://www.aliexpress.com/item/4000...archweb201603_
I had recently ordered one and it seems to also work with my Blu-Ray player
So if you had SDI input capability the use of HDMI sources would be possible. Just a thought...
If you need an SDI source for testing e.g. a professional camera I might be able to help