Trying to play a video

Hi, im new here and i've been trying to play some specific videos from a website that uses JWplayer, the question here is that the video reaches the load instance, but then freezes at a black screen, obviously at min 00:00 so, i cant play the video. As a detail, the thumbnails at the bar play well, i've also tried to skip the video to another minute but keeps black. Dunno if i can post the link but if someone needs it, i'll leave it as a comment later, thanks