Thanks for the little vid, how do you post those? I was just trying to do one today ... thanks!
They're known as animated "gifs", as in .gif files. There are free web sites, such as gifsoup.com, that allows you to create them yourself from previously posted YouTube videos (perhaps other sources as well?). However, I've never used any of the programs, or created an animated gif myself.
All I did here was do a Yahoo Images search for "Bartolo Colon" and ".gif". Most of the resulting images were gifs, these sorts of short animations. Maybe someone else can provide you with more info on creating them yourself. Or you can look up how to do it yourself.
Yahoo Images search results for: "Bartolo Colon" and ".gif":
https://images.search.yahoo.com/search/images;_ylt=AwrBT.WzG.xVvJkA7hRXNyoA;_ylu=X3oDMTEyczg3amEwBGNvbG8DYmYxBHBvcwMxBHZ0aWQDQjAwMjdfMQRzZWMDc2M-?p=%22Bartolo+Colon%22+%22.gif%22&fr=ytff1-tyc-sc
Yahoo search results for "gifsoup.com"
https://search.yahoo.com/search?ei=utf-8&fr=ytff1-tyc-sc&p=gifsoup.com&type=
