Multimedia and Comodo

I’m new user of Comodo, I just installed Internet Security Premium and after it can’t fully use website I’ve always used, and know for 100% that is safe.
The thing is before download movie from there is possible to preview, like first 10minutes, and Comodo blocked it, can’t see miniatures and watch movie before download.
I don’t know why it happened and where to change some options in Comodo so could work normally.
Can someone help?

It would be helpful if you would provide some additional details:

Name of website
Browser type and version (and extensions)
Settings used in CIS

Did you enable Secure DNS when you install CIS?