What is a way to create video sharing website like youtube?

There are multiple ways to create a video sharing website like YouTube but if you are really serious about the project and wants to create something new and competitive than

1. Create your own team with developers, Designers, UI/UX development & Marketing team.

2. Hire an agency with extensive experience in developing video streaming platform.

If you choose from one of the above steps the process that would be involved would be most probably similar to the one mentioned below

A. Research

B. Planning 

C. Pre Action

D. Action 

E.  Launch  

To know further by an expert in making video streaming Website like YouTube read the blog How to build an app like YouTube – Cost, Features, Business Model