Would this not have been better asked at the Spotters subforum?
However, the 330 in the (slightly boring) video You linked to looks not in the slightest bit unusual to me. Reflections from the ground, the APU air inlet, a little bit of filth around the APU bay doors - all standard and present on all 330s I have had the pleasure to taxi behind until now.
If You like, look up some photos on dedicated spotter sites. You will likely find that the general APU installation with the air inlet below the tail is present on all A320 to 340.