Originally Posted by Mrs Beanbag
is it possible to configure it not to stretch the image sideways to widescreen width? or does it work with non-widescreen monitors?
Yes, it is possible. As you can see in the video when oil imperium the button has a mode which it is shrinking the horizontal width. I do not know if toady it is possible to get it exactly 1:1 with this option though. It is also possible to configure this by UART (3.3V ttl) on the card itself (where all registers can be manually set for ad9984 and adv7511w).
I have tried on a monitor here that is non-wide and very old (found it in the trash). On this monitor it seems that the monitor itself takes own measures to counter this problem and it looks OK.