Embedded videos broken in "Animations In VCS" #194

I have opened the Animations In VCS page in FF, Chrome and IE, but there are only error messages displayed where the videos should be

I knew I had seen a working version of that page and I have investigated a bit

• A) The videos are broken when you access the readthedocs page: https://cdat-vcs.readthedocs.io/en/latest/Jupyter/Animations.html

• B) The videos are displayed correctly when accessed from the cdat web site: https://cdat.llnl.gov/Jupyter-notebooks/vcs/Animations/Animations.html

Are A) and B) supposed to have the same content? When you navigate the cdat web site, it is a bit confusing to find the same content (or not?) in 2 different places