To remove altazimuth field rotation from an astrovideo, the video will have to be rotated continuously at the same rate that the Earth rotates/orbits/precesses, about 15 degrees per hour or about 0.25 degrees per minute.
My free trial ran out so I don't have access to the software until I make a purchase. But it sounds like this task should be doable?
I have hidden your posts which include a copyrighted video taken from Youtube for which permission to use would appear to have not been requested.
If you want to use 3rd party videos then:
permission from the creator is required unless otherwise stated by said creator.
it is from obtained from sites such as Storyblocks,etc, either purchased or specifically stated as free for use - eg under the Creative Commons licence
you must give credit for the creator if part of the T&C of use