Sorry the video is unlisted: youtube.com/watch?v=KeEpXyqaA3Q that's it up and running fine (meant to be released tomorrow to avoid spamming my subs lol) but I've spoken to the producer of marketing and she has informed me that they have; "...worked to unblock a nice big batch of Gameplay footage earlier today...". I actually received the reply only a few hours after sending them the video. So the videos from now onwards should be fine not just for me but anyone else who wishes to upload any ACIV content. I'd advise checking if you're still getting content ID claims to either wait or if you need to release content to your subs, you might be safer re-uploading to make it quicker. EDIT: God damn, is there a way to post the link without it becoming a video? lol Nevermind.
I contacted them via the email in the their policy. It looks like the embargo has been lifted though, so you shouldn't have any issues or content ID claims from Ubisoft on ACIV in future. I think even though the music is by a 3rd party composer, it's still contracted under Ubisoft as well. At least when I looked at the soundtrack I got it said it's all copyright by Ubisoft, but I've turned the audio down to 30% on music just in case xD
They didn't take any videos down they were blocking them. Also they have every right to block them whenever they choose to, since it's their work. People look at the word "Copyright" but fail to look at some keywords that take nearly all control away from you, they are "All rights reserved" meaning che copyright holder reserves, or holds for their own use, this means theoretically they could ask you to remove a video but would allow you to keep the commentary (obviously commentary being copyrighted by the creator; us). Also to clarify something for people, regardless of fair use laws, YouTube has it's own policies in place that require you to either A) own the copyrights to a video you're uploading or B) have permission from the copyright owner to the footage you're uploading. Technically we are on YouTubes services which they own, therefore we have to follow their policies. It's not a matter of law but policy, unfortunately.
No worries.