hey there... i got a problem with my .mkv videos(i burn them into a dvd------> data files).. i used to be able to play them but right now i can't.. When i play the video, i only hear the audio but there isn't any pictures.. all i can see is a very fine vertical line.. i m guessing that it is the video picture which somehow got compressed into this fine vertical line....

Any ideas to wat's da problem anyone??