<frameset rows="170,50%,*">
<frame name="top" scrolling="no" noresize target="middle" src="1.htm">
<frameset cols="*,*">
There should be at least one value/percentage here
<frame name="middle" target="left" src="video.htm" scrolling="no">
<frame name="middle" target="right" src="links.htm">
</frameset>
You need to insert <frame name="bottomframe" etc> here to display your last frame here, then finish with </frameset>
<noframes>
<body>
<p>This page uses frames, but your browser doesn't support them.</p>
</body>
</noframes>
</frameset>
This is in the wrong place