diff --git a/web/includes/functions.php b/web/includes/functions.php
index 169f7d0eb..81a411a65 100644
--- a/web/includes/functions.php
+++ b/web/includes/functions.php
@@ -145,9 +145,30 @@ function getVideoStreamHTML($id, $src, $width, $height, $format, $title='') {
     $mimeType = 'video/'.$format;
   if ( ZM_WEB_USE_OBJECT_TAGS ) {
     switch( $mimeType ) {
+      case 'video/mp4' :
+        // Use Video.js for MP4 playback instead of deprecated plugins
+        global $cspNonce;
+        $videoId = $id ?: 'videoobj_' . uniqid();
+        return '<video id="'.$videoId.'" class="video-js" width="'.$width.'" height="'.$height.'"
+          controls autoplay preload="auto">
+          <source src="'.$src.'" type="video/mp4">
+          Your browser does not support the video tag.
+        </video>
+        <script' . ($cspNonce ? ' nonce="'.$cspNonce.'"' : '') . '>
+          document.addEventListener("DOMContentLoaded", function() {
+            if (typeof videojs === "undefined") {
+              console.error("videojs is not loaded");
+              return;
+            }
+            videojs("'.$videoId.'", {
+              controls: true,
+              autoplay: true,
+              preload: "auto"
+            });
+          });
+        </script>';
       case 'video/x-ms-asf' :
       case 'video/x-msvideo' :
-      case 'video/mp4' :
           if ( isWindows() ) {
             return '<object id="'.$id.'" width="'.$width.'" height="'.$height.'
               classid="CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95"