Confirmed: The stars in the background behind Comet #67P are in Canis Major: the cluster NGC2362 "falls down" past the limb at top-left; sparse cluster NGC2354 & the star 27CMa are also in the field.
Programming challenge: filter out (or otherwise remove) the sky from the video to isolate the comet surface for better analysis.
Programming challenge: filter out (or otherwise remove) the sky from the video to isolate the comet surface for better analysis.