Hello Cycling74 forumites,
I'm running 32-bit Jitter on Windows 7 (as 64-bit doesn't do video stuff so well yet). It's a Core I7-920 with a GTX 780.
My project involves having a static "starfield" background (1920 x 1080), and multiple copies of a small .png with alpha channel changing size at various places around the scene. (stars twinkling, triggered by MIDI input)
In "front" of all that a 1080p23.976 video (about 6 minutes) with an alpha channel to allow the bg and moving .png's to be seen.
The 1080p video file is a photorealistic (pre-rendered) planet Earth coming into shot and turning slowly on its axis. Two minutes in, when (possibly) the maximum amount of movement from frame to frame is taking place, the frame rate attached to my jit.gl.render object drops from 50+fps to 5fps for about one minute, and then returns to how it was.
The image is encoded as Quicktime Animation - I've tried Quicktime PNG and it was slightly better, but not noticeably.
Windows Resource Monitor shows no particular stress on CPU, HD or RAM.
Any initial thoughts?