Hm… my link to player had https, but flash player that was embedded into that player used just http. I corrected that error now, you should see it now.
So considering mobile web, if my player uses flash that is not supported fully by mobile browsers (unless proper plugins are installed), will twitter use the image sent through meta tags as link to mobile website? Or i have to make fallback to download plugin, make HTML5 player or something like that?
Thanks for the help…