This is Fallout: NV - CYOA, uploaded by Many A True Nerd. Basically it's a sequence of short videos, with a couple of choices in the end of every video offered by author. You can pick respective link of your choice in the video description and create your own adventure:
Interesting way how to provide decent overview of various paths created by Obsidian for those who can't be arsed to hassle with terrible bethesdean gameplay, methinks.