title: How should I choose a video format to be played on Web, Android & iOS?
body: <p>I am working on a video sharing project and wonder what if there's a video format that is compatible with most players on Web, Android &amp; iOS.</p>
  
  <p>The app will work like this:</p>
  
  <ol>
  <li>users can take videos from mobile devices (iOS and Android)</li>
  <li>other users can play videos on mobile devices (iOS and Android) and web browsers.</li>
  </ol>
  
  <p>I am not familiar with different video formats. I noticed that .mov and .mp4 are used in iOS. But I assume .mov cannot be played on Android and web browsers except Safari? Could anyone give a hint?</p>