jit.grab: could not get connected pin / codec issue?

Ed Selby's icon

I am using jit.grab on Windows 10 / Max 8.1.5 / gl3.
I got two computers, one is accepting my format number attribute,
but the other is not.
error message: jit.grab: could not get connected pin

On both computers the other format numbers are working.
Same hardware setup.
So I guess it is something like a codec issue, where I installed a codec on one computer but not on the other.
How do I find out? Can I get a list of codecs installed on Windows?

What is the base of the Windows jit.grab implementation: DirectShow or MediaFoundation?

Rob Ramirez's icon

jit.grab on windows is based on Direct X.

geotrupede's icon

HI ALL, 2022, same issue here, trying to use OBS to stream a webpage as a video to max, max can see the virtual camera but image is black. MS teams sees OBS cam and image works, so it is something missing in max? any idea?
G.