Video options grayed-out


I apologize for posting in English, I don’t know any Russian.

I installed Acestream-full (3.0.2-1trusty1) on an Ubuntu 14.04.3 (64b) and so far it seems OK except for one thing: the video options are all grayed out, so I cannot set anything, for example the aspect ratio. Many streams are compressed horizontally so I can’t view them in the normal proportions. Please let me know if there is anything that can be done to fix the issue.

Many thanks in advance,