[Update 30 May 2018: This blog explains tagging and video search for API version 2. We have since released API Version 3, which has different HTTP endpoints. You can refer to this blog on how to add tags to videos and search using tags. While API version 2 continues to be supported, we recommend that you use API v3 to automate your video workflow.] Tags are keywords to search and categorize videos using some video meta. The tag your videos system system is very much similar to the tagging in WordPress. Tags can be used to create relational content on your…