title: Overlay video after set time offset with FFmpeg
body: <p>I'm trying to add overlays to an input video with ffmpeg that appear some time after the video starts.</p>
  
  <p>The basic way to add an overlay is:</p>
  
  <pre><code>ffmpeg -i in.avi -vf "movie=overlay.avi [ovl]; [in][ovl] overlay" out.avi
  </code></pre>
  
  <p>But this adds the overlay video (or image) from the start of the input video until one of the videos ends.</p>
  
  <p>I know how to offset the overlay video using <code>movie=overlay.avi:seek_point=1.4</code>, but what about an offset on the input video?</p>
  
  <p>I could always clip the video to the desired point, add overlay on the second clip, then stitch the two but that's not very efficient.</p>