I have just watched your video and I think it shows common earthworms
with a multicolor (blue and green) surface effect due to iridescence
plus in some segments the yellow of chloragogue tissue showing
through the body wall.
Iridescence is a purely physical phenomemon commonly seen in
earthworms, being produced by the fibrous (collagenous) nature of the
cuticle causing diffraction of light.
Earthworm bioluminescence would not have that appearance in daylight.