Due to the age of the Blog Post, the ReplaceVideo.py file is no longer available to download from the link.
The Blog post does include instructions on how to create ReplaceVideo.py, although I do acknowledge that the formatting may make that a little tricky. Please also note that the ReplaceVideo.py program will only work with version 1.7 of Xibo.
I have included a link below to our API Introduction Guide for 1.8, which may also help you.