I have a DVD-R with a video in DVD format, a video_ts file, it plays on the pc at work but not on my macbook pro. I have a dvd burner, and I can watch dvds on my macbook pro. I also have vlc and real player on my mac. But every time I put in the dvd in my mac, it is read as a blank dvd. Whats my problem? Can I fix this? I've tried it on two different macbooks pros, different models, but both read the dvd-r as blank. But the video plays fine on a pc.