title: Check if a video exists on Youtube (api v3)
body: <p>When user inputs a youtube url, I want to make sure if the video exists on youtube so that I can embed and display it using jquery. Every other answers I found didnt worked for me, since they were for the older api versions. </p>
  
  <p>How do I check in it API v3 (preferably without using OAuth)?</p>
  
  <p>Thanks.</p>