I have a question. Am I allowed to have two contributor accounts? I would use the first account to upload vectors and the second one to upload videos.

It’s unnecessary to separate your media.

Customers find content in keyword searches; not from individual profiles. 

One account is all you need for ALL file types -- AI, EPS, SVG, JPG, PNG, MOV & MP4. 

No, and your question indicates that you haven’t actually read the Adobe Stock Contributor guidelines. Reading the guidelines will ensure that you have a much higher chance of success on Adobe Stock.

There was no advantage to having multiple accounts even before Adobe decided they would no longer be allowed. Buyers search the entire database, not portfolios of specific contributors.

Due to a change in the rules, it is no longer possible to use multiple accounts.

No. You cannot have two accounts. Doing so will get you banned.