diff --git a/app/server.js b/app/server.js
index 41c3e1f..2708a04 100644
--- a/app/server.js
+++ b/app/server.js
@@ -8,7 +8,7 @@
  * @license For open source under AGPL-3.0
  * @license For private project or commercial purposes contact us at: license.mirotalk@gmail.com
  * @author  Miroslav Pejic - miroslav.pejic.85@gmail.com
- * @version 1.0.80
+ * @version 1.0.81
  */
 
 require('dotenv').config();
diff --git a/package.json b/package.json
index 7306cb0..8561b23 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "mirotalkbro",
-    "version": "1.0.80",
+    "version": "1.0.81",
     "description": "P2P WebRTC audio, video and screen live broadcast",
     "main": "app/server.js",
     "scripts": {
diff --git a/public/js/broadcast.js b/public/js/broadcast.js
index cf1c0f5..0bfa599 100644
--- a/public/js/broadcast.js
+++ b/public/js/broadcast.js
@@ -406,7 +406,7 @@ function toggleVideo() {
     const color = getMode === 'dark' ? 'white' : 'black';
     videoBtn.style.color = videoBtn.style.color == 'red' ? color : 'red';
     videoOff.style.visibility = videoBtn.style.color == 'red' ? 'visible' : 'hidden';
-    window.stream.getVideoTracks()[0].enabled = !window.stream.getVideoTracks()[0].enabled;
+    broadcastStream.getVideoTracks()[0].enabled = !broadcastStream.getVideoTracks()[0].enabled;
     sendToViewersDataChannel('video', { visibility: videoOff.style.visibility });
 }
 
@@ -792,7 +792,7 @@ videoFpsSelect.onchange = applyVideoConstraints;
 
 function applyVideoConstraints() {
     const videoConstraints = getVideoConstraints();
-    window.stream
+    broadcastStream
         .getVideoTracks()[0]
         .applyConstraints(videoConstraints)
         .then(() => {
@@ -801,9 +801,9 @@ function applyVideoConstraints() {
             localStorage.videoFpsSelectedIndex = videoFpsSelect.selectedIndex;
         })
         .catch((error) => {
+            console.error('setVideoQuality Error', error.name, error.message);
             videoQualitySelect.selectedIndex = localStorage.videoQualitySelectedIndex;
             videoFpsSelect.selectedIndex = localStorage.videoFpsSelectedIndex;
-            console.error('setVideoQuality', error);
             popupMessage(
                 'warning',
                 'Video quality/fps',
@@ -862,7 +862,6 @@ function getStream() {
     };
     const constraints = screenShareEnabled ? screenConstraints : cameraConstraints;
 
-    stopWindowStream();
     stopBroadcastStream();
 
     if (screenShareEnabled) {
@@ -888,8 +887,6 @@ function getStream() {
 }
 
 function gotStream(stream) {
-    window.stream = stream;
-    broadcastStream = stream;
     if (!screenShareEnabled) {
         audioSelect.selectedIndex = [...audioSelect.options].findIndex(
             (option) => option.text === stream.getAudioTracks()[0].label,
@@ -911,13 +908,12 @@ function gotScreenStream(stream) {
     if (audioTabTrack) tracksToInclude.push(audioTabTrack);
     if (audioTrack) tracksToInclude.push(audioTrack);
     const newStream = new MediaStream(tracksToInclude);
-    window.stream = newStream;
-    broadcastStream = newStream;
     attachStream(newStream);
     socket.emit('broadcaster', broadcastID);
 }
 
 function attachStream(stream) {
+    broadcastStream = stream;
     video.srcObject = stream;
     video.playsInline = true;
     video.autoplay = true;
@@ -926,12 +922,6 @@ function attachStream(stream) {
     video.controls = false;
 }
 
-function hasVideoOrAudioTracks(stream) {
-    const hasVideo = stream && stream.getVideoTracks().length > 0;
-    const hasAudio = stream && stream.getAudioTracks().length > 0;
-    return { hasVideo, hasAudio };
-}
-
 function stopBroadcastStream() {
     if (broadcastStream) {
         broadcastStream.getTracks().forEach((track) => {
@@ -940,14 +930,6 @@ function stopBroadcastStream() {
     }
 }
 
-function stopWindowStream() {
-    if (window.stream) {
-        window.stream.getTracks().forEach((track) => {
-            track.stop();
-        });
-    }
-}
-
 function handleError(error) {
     console.error('Error', error);
     if (screenShareEnabled) {
diff --git a/public/js/utils.js b/public/js/utils.js
index b85b074..6249083 100644
--- a/public/js/utils.js
+++ b/public/js/utils.js
@@ -65,16 +65,18 @@ function getUUID4() {
     );
 }
 
+function hasVideoOrAudioTracks(mediaStream) {
+    const hasVideo = mediaStream && mediaStream.getVideoTracks().length > 0;
+    const hasAudio = mediaStream && mediaStream.getAudioTracks().length > 0;
+    return { hasVideo, hasAudio };
+}
+
 function hasAudioTrack(mediaStream) {
-    if (!mediaStream) return false;
-    const audioTracks = mediaStream.getAudioTracks();
-    return audioTracks.length > 0;
+    return mediaStream && mediaStream.getAudioTracks().length > 0;
 }
 
 function hasVideoTrack(mediaStream) {
-    if (!mediaStream) return false;
-    const videoTracks = mediaStream.getVideoTracks();
-    return videoTracks.length > 0;
+    return mediaStream && mediaStream.getVideoTracks().length > 0;
 }
 
 function saveDataToFile(dataURL, fileName) {
@@ -217,21 +219,20 @@ function goOutFullscreen() {
 }
 
 function logStreamSettingsInfo() {
-    const stream = window.stream;
     let streamInfo = [];
-    if (stream.getVideoTracks()[0]) {
+    if (broadcastStream.getVideoTracks()[0]) {
         streamInfo.push({
             video: {
-                label: stream.getVideoTracks()[0].label,
-                settings: stream.getVideoTracks()[0].getSettings(),
+                label: broadcastStream.getVideoTracks()[0].label,
+                settings: broadcastStream.getVideoTracks()[0].getSettings(),
             },
         });
     }
-    if (stream.getAudioTracks()[0]) {
+    if (broadcastStream.getAudioTracks()[0]) {
         streamInfo.push({
             audio: {
-                label: stream.getAudioTracks()[0].label,
-                settings: stream.getAudioTracks()[0].getSettings(),
+                label: broadcastStream.getAudioTracks()[0].label,
+                settings: broadcastStream.getAudioTracks()[0].getSettings(),
             },
         });
     }