[Cin] Fwd: Chromakey + blur testcase from IgorV

[Andrea paz]

To me the story was even more odd.
When I uploaded IgorV's project, it was completely out of whack. I
tried various settings with the same result. When I did the reset the
situation improved but the horizontal slider still did not work. Using
values other than 0 brought the background to black as well as the
masked part (the green flag). Using just the Vertical slider on the
other hand worked fine. I also tried the LinearBlur plugin by setting
it to horizontal and everything worked fine. After IgorBeghetto's
email I reset it again and now everything is fine, even the horizontal
slider.