They hashcheck all things being uploaded so the exact same file would automatically register when it finishes. Unfortunately since I didn't see what they looked like before they were removed I cannot say what was wrong in those cases.
"This account has been terminated due to repeated or severe violations of our Community Guidelines and/or claims of copyright infringement."
Did you get any email confirmation on the email you used to register the account?
What if I change the filename or something?
Yes, I did get an email but all it says was "terminated due to repeated or severe violations of our Community Guidelines and/or claims of copyright infringement." and no further explanation.
I really don't think I had any bad content though. I think it was just the links I had in the descriptions for some videos.
Should I risk re-uploading some of them? I certainly can't re-create them and I had put in hundreds of hours to make 'em.