title: x265: Will I get smaller file size with frame-threads=1?
body: <p>According to the <a href="https://x265.readthedocs.io/en/master/cli.html#cmdoption-frame-threads" rel="nofollow noreferrer">x265 Command Line Options Documentation</a> about the <code>-F</code> / <code>--frame-threads</code> option:</p>
  <blockquote>
  <p>Using a single frame thread gives a slight improvement in compression,
  since the entire reference frames are always available for motion
  compensation, but it has severe performance implications.</p>
  </blockquote>
  <p>Will this affect file size significantly?</p>