Musicity Joomsocial video thumbail

Hello everyone,

Here, I have a problem on the page template musicity community. The video module shows me videos too small and I would like to expand benefits, only when I enlarged, that it becomes blurry I tried many techniques but nothing to do thumbail always get blurry. Would you have a solution?

I think that it can be a JomSocial configuration-related problem - you should ask for it the JomSocial support.