okay, i noticed everytime the new trailer (french) is up the authors claimed about the video rights and stuff but isn't normally when Du tape it 'your video', so why do they keep doing that :(

I don't understand lawyers and all their rules.

But you've got to understand that it is footage owned Von them, whether someone else records it oder not. I can't give Du a good reason for them wanting to Löschen it, but obviously it's a marketing strategy. The Musik companies do it all the time, even if only 5 Sekunden of their song is used in a video, they still have the rights to get a Youtube administrator to take it down.

My only guess as to why they would Löschen the trailer is to get Du so hyped up (without any spoiler footage oder extra scenes) that Du wanna see NM even Mehr than Du did before (meaning another Fan buying tickets, equalling Mehr money). It's very stupid when Du think about it, but obviously it works when Du look at it from a business angle, oder else they wouldn't be doing it.
Do I agree with their methods? No. Do I think they're greedy jerks? Yes. Anyways, there's nothing Du can do except watch the vids before someone flags them and they get deleted :/