Live camera input quality

[Gildas]

Hello,
I use a video feedback in resolume to keep the traces of light done in space
When I use live input camera (comes from intensity shuttle) I have bad quality:

Intensity.jpg (11.58 KiB) Viewed 2498 times

but when I use spout (comes from max/msp/jitter) I have good quality:

Spout.png (121.09 KiB) Viewed 2498 times

I have tried to adjust parameters in the graphic card settings and put the same max/msp/jitter but quality doesn't changed.
is there a reason that the video feedback effect can affect the quality of the video ?
The solution is out there ?

By advance thank you for your answer

[Zoltán]

Try switching off De-interlace in the Blackmagic clip

[Gildas]

Nice ! It's that !
Thank you Zoltán !