On a sunny day (Thu, 15 Mar 2012 13:57:24 +1100) it happened Chris Baird wrote in :
You not even understand the problem. I have one system here with more modelines then you have ever seen in XF86Config, and yes you can change between them with ctrl alt +/- That is not the point, and not even that not every monitor will like that, The point is locking the frame rate of the X server to the video played. I gave a good link that explains it, try reading it, The other point is that people happily play 50 Hz video on a 60 Hz display these days, and then dare call that configuration a 'media player'. lack of real knowledge about video.
Video, on the PC, in this time and age is mostly a joke. That is why real media players exist, and those work in a very different way.