I went to the KDE desktop, to the directory with the files, clicked the trailer I am Legend.m2ts, choosed mplayer in the with window, using to it shows gmplayer and played the movie, perfect, cpu usage was most 20%.
Played the transformers.m2ts file, in the same manner, cpu usage was most 40 to 50 percent, sometimes spicking to 83% but quickly returning to to 40 to 50 average. There were drops to 20% during quiet scenes.
gmplayer is a link to mplayer.
But as the previous post, said vdpau does work.