diff --git a/index.html b/index.html
index ec1f6e4..030f4fe 100644
--- a/index.html
+++ b/index.html
@@ -348,21 +348,20 @@ function isCamTime() {
   return h >= 19 || h < 8;
 }
 
-// Double-buffer: load in hidden img, swap on load (no flicker)
-const bufImg = new Image();
-bufImg.onload = () => { camImg.src = bufImg.src; };
-
-function refreshCam() {
+function updateCam() {
   if (isCamTime()) {
     camWrap.style.display = '';
-    bufImg.src = '/api/cam/pulse-ox?' + Date.now();
+    if (!camImg.src.includes('/stream')) {
+      camImg.src = '/api/cam/pulse-ox/stream';
+    }
   } else {
     camWrap.style.display = 'none';
+    camImg.src = '';
   }
 }
 
-refreshCam();
-setInterval(refreshCam, 1000);
+updateCam();
+setInterval(updateCam, 60000);
 </script>
 </body>
 </html>