I've got a quite simple Jitter patch which has some performance issues.
It has a jit.qt.movie object connected directly to a jit.window. It is a "VJ style" patch which just has to trigger some Quicktime clips and display them on an external screen.
The source material are 25 fps 720 x 576 Apple Animation clips using thousands of colours. This format gives us better performance than PhotoJPEG coded files.
The computer is not too fast: an iBook G4 876 Mhz 768 MB ram running a MacOS 10.4 and the latest MaxMSP and Jitter. Content is run from an external firewire disc, probably a 5400 rpm model.
The external display is a TV, run in 720 x 756 PAL display mode.
This setup has trouble keeping a more or less steady 24/25 fps frame rate. It has notable, seemingly random dips in performace.
Of course the system spec is not too great but one single stream of video shouldn't be that taxing?
I'm looking for some ways to improve performance or the confirmation that the current performance is normal for this setup. An example is included underneath, displaying on the main display instead of a 2nd screen.