On this post you can get the FBX file with the animation presented in the video (the file has only the armature)
You can create your own animation from video files using the Mocap MPP2SOS addon, you can get it on the links bellow.
https://blendermarket.com/products/mocap-mpp2soss
https://carlosedubarreto.gumroad.com/l/mocap_mpp2sos