title: What are fragments when using youtube-dl program?
body: <p>I am using <a href="https://github.com/ytdl-org/youtube-dl" rel="nofollow noreferrer"><code>youtube-dl</code> program</a> to get some videos from Youtube.<br>
  Some files appear in Windows File Explorer while downloading.<br>
  For example:</p>
  
  <p><a href="https://i.stack.imgur.com/JDcHL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JDcHL.png" alt="enter image description here"></a></p>
  
  <p>Command line program also shows that exist a total amount of fragments in that video:  </p>
  
  <p><a href="https://i.stack.imgur.com/Ef1Na.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ef1Na.png" alt="enter image description here"></a></p>
  
  <p>And command line help in <code>youtube-dl</code> also gives some download options relative to fragments:</p>
  
  <p><a href="https://i.stack.imgur.com/0s7zA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0s7zA.png" alt="enter image description here"></a></p>
  
  <p>Fragments seem like small chunks of video parts.<br>
  But, is there a better technical explanation?</p>