i haven't posted here much since the new forum layout, am a bit lost, sorry... there used to be a 'documentation' forum where you could report problems, but hmm, no such forum any more, should I report it here in the topical forum, or are such things now supposed to get submitted to the bugs database?
the documentation for MovieMaker's keyFrameRate parameter of its constructor needs correction -- currently described as "number of key frames each second"
that description is essentially "backwards" (or the reciprocal of?) it's actual working versus fps. (and it's not based on absolute time ("seconds") anyway, but on frames) it should be described something like "maximum non-key (delta) frames that may occur between key frames".
fe, if you request 30fps and keyFrameRate 15, you'd get 2 key frames every second (not the 15kf/sec as currently described; to get 15 key frames/sec at 30fps you'd want a keyFrameRate of 2, to get 15 kf/sec at 45fps you'd want keyFrameRate 3, etc)