title: Is YouTube still using DASH?
body: <p>Is YouTube using MPEG-DASH for delivering its videos?</p>
  
  <p>I see that if I use the -F option in youtube-dl for some videos there is no "DASH video", e.g., <a href="https://www.youtube.com/watch?v=Us-TVg40ExM" rel="noreferrer">https://www.youtube.com/watch?v=Us-TVg40ExM</a>. So is YouTube maintaining a connection with the server and requesting the "piece" of video by the "range" field of the HTTP request? Or is it downloading fixed-time segments like standardized by DASH?</p>
  
  <p>I cannot obtain the MPD anymore like: <a href="https://stackoverflow.com/questions/43843237/how-to-get-mpd-file-for-a-youtube-video">How to get .mpd file for a youtube video</a></p>
  
  <p>Thank you!</p>