Hi Wim,
Reading your comment I get the impression that you did not even try.
you are right, I didn't try webview because I thought it was only a different way to show images, not also using a different stream.
I tested vweblook/webview, and I'm able to see a 320x240 stream for one or two minutes. I just noted that c250tc4 is supposed to show a 320x240 stream, but the PM window is only 160x120 (while webview has a 320x240 window).
Also I noted that other apps are usually freezing at startup while changing the luminance of the stream, e.g. first shot is darker then it gets lighter in smaller frame apps.
This with 10.195 drivers, I will test .196 on next boot.
thanks,
Yuri