Last version of STeem was released 2004. So I don't think they are working on it anymore.
I just tried a third emulator >
Hatari. Most games runs fine there and It has a video recording feature. But it sucks. It just output .bmp images. So can't use that.
Btw.. some of the games I want to record is games I have played on Amiga before;
Monster Business, Rainbow Island, Prehistorik, Terminator II, Chuck Rock, Mega Twins, Magic Pockets, Baby Jo, Rolling Ronny, Double Dragon series, Silk Worm and many more..