01-28-2019, 03:10 PM
If it's your video you can go to video manager and you will be able to look and amend your tags there. If it's a video on YouTube that is not yours then look at the source code of the YouTube watch page in question and search for the tags manually or by using ctrl-F. If you don't want to do that every time then use vidIQ or Tube Buddy which have built in tag viewing functions that will come up for every video on your screen.