Thanks for the reply. I thought that was the case with QT. I am just thinking that 64bit would give me better performance.
I am trying the play back a 5760 x 1080 video (or 3 full HD videos in a row, in sync) and be able to change the speed of playback.
The hap player is almost there but I can see a slight judder when changing the speed, especially when the video has been looping for a while.
The videos are very large (hap versions are 50GB each for full HD).
I will take a look into ofxWMFVideoPlayer and let you know what I find.