Usage of Adobe Stock Video

You will get with the free videos an enhanced licence, and you can do anything that this licence allows you to do. There are limitations of the use, but they are the same as for sale videos. There is no difference.

Somewhere in the licensing terms, you will find one or more paragraphs on social media use. Read all the licensing terms and especially those for enhanced licences. You will find your answers there. Update this, if you need additional information. Please note, however, that we don't give you legal advice on the use of the assets. We are telling you only, what we read in the terms.

Look here for more information on licensing: https://community.adobe.com/t5/stock/links-for-licensing-terms/td-p/11366788
(Disclaimer: As always with licensing, this is my interpretation of the rules. The advice is based on reading and interpreting the licence terms and on fair use for both the buyer and the artist/stock company, but I cannot rule out that my interpretation is wrong. I'm not an Adobe employee).