I don't know if it will work but you could try Stark Labs
Craterlet (it's free) or you might want to try
Virtual Dub it works as well, but from memory I had some issues with getting a frame rate faster than about 3 frames/sec. Mind you it's been a while. I haven't had an LPI for ages. You could also try
AMcap. I believe that it will work with the LPI as well.