720p video choppy?

[Fazzl]

I have a 13MBP 2.26ghz 2GB ram etc and when i try to play 720p movies like harry potter or deja vu, during action scenes the playback becomes choppy and the video turns into a bunch of squares and i usually miss a few second of the scene. it usually happens on graphic intensive screens such as the a girl dropped her teddy bear into the ocean waves and in harry potter 4 when all the glass frames break from the wall and fall down. Im using LED Cinema Display too thanks

 

[upinflames900]

I don't think this should be happening, where did you get the movies and what are you playing them with...and what is the format of the movies?

 

[Fazzl]

.mkv and i use vlc and quicktime

 

[cdxsuprace]

Try this with VLC. It works for me.

http://chipmunkninja.com/1080p-MKV-playback-on-Mac-1r@