Question / Help DV cam don't see on mac

[Salvosound]

Hy, sorry for my english.
I installed a OBS software, I linked a DV cam external with thunderbolt way. On mac, the image from this cam is correct, in wirecast, or in camtwist I see this camera.
When I open OBS, Add a new capture image, but don't see the camera. I see only facetime camera.
Where I wrong?
Help me please

 

[Salvosound]

I solved this way:
1 - I installed it on a mac software to read the camera "RecordMe"
2 - In OBS nuoca I created a scene, and chose "Capture Window"
3 - I applied a filter "cuts" by removing the excess.
I hope that it is placing the reading part of telecaera direct.
Bye Bye