Currently we don't support the hooks for multiframe/multipass encoding with jit.qt.record (which is really the only way H.264 gets to be markedly smaller). So it might be dependent on the settings for H.264 (every frame should be keyframe, no multipass). I thought that this was working (at least on Mac), though I could be mistaken.

Try jit.qt.movie's export fulldialog, and let us know if that works for H.264. If so, I would suggest you record to a relatively high quality file (e.g. photo jpeg), and then after completed open in jit.qt.movie and export as H.264 with any appropriate options set. This should be relatively automatable. Otherwise you'll need to find some other solution.

Good luck.

-Joshua

Thanks I'll probably try it tomorrow. Now its time to get some sleep. I'll let you know if it worked out.

Thijs