title: How to add a Date/Time to video capture?
body: <p>I want to record video with Date/Time (put/draw current time and date on the each frame in some corner). </p>
  
  <p>I din't really found any solution. I saw some similar questions here, but they doesn't have answers.</p>
  
  <p>So I want to use <code>MediaRecorder</code> class to record video (I already implemented this) and somehow add Date/Time at each frame so later I could open recorded video with some video player and see this Date/Time.</p>