title: Video sphere material repeat does not seam to work in A-frame
body: <p>I run into the following issue: <code>&lt;a-videosphere material=&quot;repeat: ...&quot;</code> does not seam to work, while it works with a simple <code>a-video</code> tag.</p>
  <p>I'm trying to create a half sphere and map the left half on it of an Equirectangular Video.</p>
  <pre><code>material=&quot;side: back; shader: flat; repeat: 0.5 1;&quot;
  geometry=&quot;primitive: sphere; radius: 100; thetaStart: 0; thetaLength: 180; phiStart: 0; phiLength: 180; segmentsWidth: 64; segmentsHeight: 64&quot;
  </code></pre>
  <p>Is material repeat not supported by videospheres? Is there any workaround?</p>