title: ffmpeg moving text drawtext
body: <p>I'm using ffmpeg library to draw text on video in specific time and i'm success to  do that Now i need to move the text from position to another and i can't do that  so can any one suggest me how to do that </p>
  
  <p>i'm using this command to move text from  top to down but i can't determine the x and Y to move from the x,y to specific x,y</p>
  
  <pre><code>ffmpeg -i VideoInput.mp4 -vf "drawtext=enable='between(t,12,14)':fontfile=myfont.otf:text='Test test':x=(w-text_w)/2:y=w/50\*mod(t\,2):fontsize=65" -acodec copy outputVideo.mp4
  </code></pre>