Grab Poster in comingsoon.it

Hi Guys
I spent two days to understand how to take poster images from the comingsoon.it site
The problem is this, there are two types of posters, one with the trailer

http://webgrabplus.com/sites/default/files/user/datalife/trailer.JPG

and one without

http://webgrabplus.com/sites/default/files/user/datalife/no_trailer.JPG

But if I put in the ini file

http://webgrabplus.com/sites/default/files/user/datalife/ini.JPG

it does not work.
I have done various tests but I don't understand how to do it
Thank you