I just watched my dvd of celebrators of becoming, this video was shot in Kiev in 2005 and as Andariel said Tristania didn't play there before 2008
Members of Tristania and Trail of Tears appear only Iron Fist ( in Pratteln) and Caffeine (in Toulouse)
Well, she doesn't look like Cathrine Paulsen either and I see some of the guys there looking a bit like Kjetil, Einar and Osten
Trail of tears didn't have a female singer on the tour, and Einar stopped touring just before this tour.
I heard someone saying that video was filmed in Paris actually
When I'm looking at the stage it looks different from the stage they played in Paris (la locomotive)