If you wish to make your own animations here are some tools you can download.
This page only makes sense if you are a someone with experience building your own software, basically for other computer programmers. Sorry about that but I'm more concerned with using my own program than making it nice for others.
d2v is a command line tool which can create animations. It takes as input a xml dance file and produces an mp4.
This link is to a bzip2ed tar file containing the source code and a Makefile. It requires libxml2, libungif, libav and gtk+-3.0. (on systems which distinguish between developers and everyone else, you want the developer version)
It is designed to run on a unix-like environment, if you're on Windows I guess you'd use WSL now, on the mac macports will work.
Warning: It's not user-friendly. Its error messages are designed for me and may not be very meaningful to anyone else.
And, of course, the dance xml is documented here.
The package also contains a program for laying out crib diagrams (called k2s) and that takes an input xml file whose format is described here.