diff --git a/searchurl/search.html b/searchurl/search.html
index 51e80ca..481b055 100644
--- a/searchurl/search.html
+++ b/searchurl/search.html
@@ -112,6 +112,10 @@
 <a href="i:00化学品:http://www.basechem.org/search?q=">化学品:http://www.basechem.org/search?q=</a><br>
 <a href="i:00britannica:https://www.britannica.com/search?query=">britannica:https://www.britannica.com/search?query=</a><br>
 <a href="i:00mathRef:https://reference.wolfram.com/search/?q=">mathRef:https://reference.wolfram.com/search/?q=</a><br>
+<a href="i:00mathSE:https://math.stackexchange.com/search?q=">mathSE:https://math.stackexchange.com/search?q=</a><br>
+<a href="i:00phySE:https://physics.stackexchange.com/search?q=">phySE:https://physics.stackexchange.com/search?q=</a><br>
+<a href="i:00physicsForum:https://www.physicsforums.com/search/2195918/?q=">physicsForum:https://www.physicsforums.com/search/2195918/?q=</a><br>
+<a href="i:00chemSE:https://chemistry.stackexchange.com/search?q=">chemSE:https://chemistry.stackexchange.com/search?q=</a><br>
 <a href="i:00chem:https://www.ncbi.nlm.nih.gov/pccompound?term=">chem:https://www.ncbi.nlm.nih.gov/pccompound?term=</a><br>
 <a href="i:00proofwiki:https://proofwiki.org/w/index.php?search=">proofwiki:https://proofwiki.org/w/index.php?search=</a><br>
 <a href="i:00physics:http://www.physics.org/explore-results-all.asp?q=">physics:http://www.physics.org/explore-results-all.asp?q=</a><br>
diff --git a/searchurl/txt/plyr.html b/searchurl/txt/plyr.html
index 13b3497..494d40a 100644
--- a/searchurl/txt/plyr.html
+++ b/searchurl/txt/plyr.html
@@ -3,12 +3,43 @@
   <source id="src" />
 </video>
 <script src="https://cdn.jsdelivr.net/npm/plyr"></script>
+<script src="https://cdn.jsdelivr.net/hls.js/latest/hls.js"></script>
 <script>
-  {//?u=
-    let url = location.search.substring(3);
+  const source = location.search.substring(3);//?u=
+  {
     let d = document;
     let e = d.getElementById("src");
-    e.src = url;
+    e.src = source;
+  }
+  const video = document.querySelector("video");
+  const defaultOptions = {};
+  if (Hls.isSupported()) {
+    const hls = new Hls();
+    hls.loadSource(source);
+    hls.on(Hls.Events.MANIFEST_PARSED, function (event, data) {
+      const availableQualities = hls.levels.map((l) => l.height);
+      defaultOptions.quality = {
+        default: availableQualities[0],
+        options: availableQualities,
+        forced: true,        
+        onChange: (e) => updateQuality(e),
+      }
+
+      // Initialize new Plyr player with quality options
+      const player = new Plyr(video, defaultOptions);
+    });
+    hls.attachMedia(video);
+    window.hls = hls;
+  } else {
+    const player = new Plyr(video, defaultOptions);
+  }
+
+  function updateQuality(newQuality) {
+    window.hls.levels.forEach((level, levelIndex) => {
+      if (level.height === newQuality) {
+        console.log("Found quality match with " + newQuality);
+        window.hls.currentLevel = levelIndex;
+      }
+    });
   }
-  const player = new Plyr('#player');
 </script>