title: AVPlayer seekToTime only generates frame every second
body: <p>how can I make <code>AVPlayerLayer</code> display the exact video's frame in method <code>seekToTime</code>.</p>
  
  <p>Now <code>[AVPlayer seekToTime:CMTimeMakeWithSeconds(CMTimeGetSeconds(A, B))]</code>, the <code>AVPlayerLayer</code> only displays the frame at every 1-second change for example 1.50-2.50-3.50. I want it to display frame at 4.45 second for example. Is it possible?</p>