diff --git a/index.html b/index.html
index aa11398..c4a283a 100644
--- a/index.html
+++ b/index.html
@@ -122,7 +122,7 @@ transform: translate(-50%, -50%);
 
 <div class="row">
   <div class="column" style="width: 600px; height: 600px;">
-<iframe sandbox="allow-same-origin allow-scripts allow-popups" src="https://video.soi.ch/videos/embed/27fa432b-86d4-42b4-9c99-eff089c1f1bc?autoplay=1&title=0&warningTitle=0&peertubeLink=0" frameborder="0" allowfullscreen></iframe>
+<iframe width="560" height="315" sandbox="allow-same-origin allow-scripts allow-popups" src="https://video.soi.ch/videos/embed/27fa432b-86d4-42b4-9c99-eff089c1f1bc?autoplay=1&title=0&warningTitle=0&peertubeLink=0" frameborder="0" allowfullscreen></iframe>
   </div>
   <div class="column" style="min-height: 500px; min-width: 700px;" >    <p id="schedule">1: Spacing in Time – 0916653+1005344+1007629<br>
 De-synchronization<br>