I've tried for a while to fix this and I'm still having trouble.
I've got a patch which loads a jit.qt.movie (loadram 1) say 10 seconds. I want to slow it down so the movie plays to the end in 20 secs and then record it with jit.qt.record. If I change the rate, that's fine, but running a framedump ignores the rate.
Running at realtime is not satisfactory as any disk activity I'm finding causes a frame drop (which is the reason I was using framedump in the first place obviously) which shows up in the movie jit.qt.record records. Is there any way round this, to change the rate and dump the modified frames?