Mkv. data plays too fast
 

Hello. I have an mkv. data which i want to play mit bsplayer, but the film only jump from second to second, for example from 00:00:01 to 00:00:06 to 00:00:11 and so on?
But its the first mkv. data with this problem, with the others of my mkv. datas i havent problems . can someone help me?
Sorrs for my bad english, i am german:teeth:

thx:wink