Various test footage trying out Mojo43's technique to see what comes out of it. For the Nikon D5100 and on this forum thread:
Nikon D5100 HDSLR
This one was taken by setting the Aperture to F4 in Aperture Priority mode, entering into LiveView mode, setting ISO to 100 and adjusting the exposure compensation while pointed at a bright computer monitor to get the live view screen to read 1/30th shutter speed. Toggle on AE Lock and then record.