@jhoepffner
Hi Jacques, thanks a lot for your comments. It is always good to know that other people share the same problem, as you say I feel less alone :)
I've tried already to reboot the computer and it doesn't solve the problem. I have also tried to start isadora straight after reboot, doing nothing in between, and it still doesn't work.
The only solution I see so far is to try on another computer with a new installation of windows 7 (and not windows 10), and installing only the minimum software : isadora, quicktime, and driver for intensity.
@keftaparty
Hi Mehdi, thank you for the feedback !
the blackmagic media Express software works fine so I don't think there is another software in competition for the video ressource. But I will try on a new windows installation to get better chance of succes.
It is good to hear that the Intensity should be compatible with Izzy. Do you remember the configuration ? Was it windows 7 ou 10 ?
Which version os Isadora were you using ? Thanks !