diff --git a/openvidu-browser/src/OpenVidu/OpenVidu.ts b/openvidu-browser/src/OpenVidu/OpenVidu.ts
index 3d2263ba..ddd81e1f 100644
--- a/openvidu-browser/src/OpenVidu/OpenVidu.ts
+++ b/openvidu-browser/src/OpenVidu/OpenVidu.ts
@@ -717,9 +717,10 @@ export class OpenVidu {
     /**
      * @hidden
      */
-    sendTrackChangedEvent(publisher: Publisher, reason: string, oldLabel: string, newLabel: string, propertyType: string) {
+    sendTrackChangedEvent(publisher: Publisher, oldLabel: string, newLabel: string, propertyType: string) {
         const oldValue = { label: oldLabel };
         const newValue = { label: newLabel };
+        const reason = 'trackReplaced';
 
         if (publisher.stream.isLocalStreamPublished) {
             this.sendRequest(
@@ -727,7 +728,7 @@ export class OpenVidu {
                 {
                     streamId: publisher.stream.streamId,
                     property: propertyType,
-                    newValue: JSON.stringify({ newLabel }),
+                    newValue: newValue,
                     reason
                 },
                 (error, response) => {
diff --git a/openvidu-browser/src/OpenVidu/Publisher.ts b/openvidu-browser/src/OpenVidu/Publisher.ts
index 5ddc7f24..c4bec311 100644
--- a/openvidu-browser/src/OpenVidu/Publisher.ts
+++ b/openvidu-browser/src/OpenVidu/Publisher.ts
@@ -811,12 +811,12 @@ export class Publisher extends StreamManager {
         };
         if (track.kind === 'video' && updateLastConstraints) {
             this.openvidu.sendNewVideoDimensionsIfRequired(this, 'trackReplaced', 50, 30);
-            this.openvidu.sendTrackChangedEvent(this, 'trackReplaced', trackInfo.oldLabel, trackInfo.newLabel, 'videoActive');
+            this.openvidu.sendTrackChangedEvent(this, trackInfo.oldLabel, trackInfo.newLabel, 'videoTrack');
             if (this.stream.isLocalStreamPublished) {
                 this.session.sendVideoData(this.stream.streamManager, 5, true, 5);
             }
         } else if (track.kind === 'audio' && updateLastConstraints) {
-            this.openvidu.sendTrackChangedEvent(this, 'trackReplaced', trackInfo.oldLabel, trackInfo.newLabel, 'audioActive');
+            this.openvidu.sendTrackChangedEvent(this, trackInfo.oldLabel, trackInfo.newLabel, 'audioTrack');
         }
         if (track.kind === 'audio') {
             this.stream.disableHarkSpeakingEvent(false);
diff --git a/openvidu-browser/src/OpenVidu/Session.ts b/openvidu-browser/src/OpenVidu/Session.ts
index ec05ab7d..71d6537e 100644
--- a/openvidu-browser/src/OpenVidu/Session.ts
+++ b/openvidu-browser/src/OpenVidu/Session.ts
@@ -649,7 +649,7 @@ export class Session extends EventDispatcher {
      * when speech is detected in its audio track.
      *
      * @param stream - The Stream for which you want to start receiving [[SpeechToTextEvent]].
-     * @þaram lang - The language of the Stream's audio track. It must be a valid [BCP-47](https://tools.ietf.org/html/bcp47) language tag like "en-US" or "es-ES".
+     * @param lang - The language of the Stream's audio track. It must be a valid [BCP-47](https://tools.ietf.org/html/bcp47) language tag like "en-US" or "es-ES".
      * 
      * @returns A Promise (to which you can optionally subscribe to) that is resolved if the speech-to-text subscription
      * was successful and rejected with an Error object if not.
@@ -990,6 +990,12 @@ export class Session extends EventDispatcher {
                         event.newValue = event.newValue === 'true';
                         stream.videoActive = event.newValue;
                         break;
+                    case 'videoTrack':
+                        event.newValue = JSON.parse(event.newValue);
+                        break;
+                    case 'audioTrack':
+                        event.newValue = JSON.parse(event.newValue);
+                        break;
                     case 'videoDimensions':
                         oldValue = stream.videoDimensions;
                         event.newValue = JSON.parse(JSON.parse(event.newValue));
diff --git a/openvidu-browser/src/OpenViduInternal/Events/StreamPropertyChangedEvent.ts b/openvidu-browser/src/OpenViduInternal/Events/StreamPropertyChangedEvent.ts
index fa262058..cc72227f 100644
--- a/openvidu-browser/src/OpenViduInternal/Events/StreamPropertyChangedEvent.ts
+++ b/openvidu-browser/src/OpenViduInternal/Events/StreamPropertyChangedEvent.ts
@@ -30,7 +30,7 @@ export class StreamPropertyChangedEvent extends Event {
     stream: Stream;
 
     /**
-     * The property of the stream that changed. This value is either `"videoActive"`, `"audioActive"`, `"videoDimensions"` or `"filter"`
+     * The property of the stream that changed. This value is either `"videoActive"`, `"audioActive"`, `"videoTrack"`, `"audioTrack"`, `"videoDimensions"` or `"filter"`
      */
     changedProperty: string;
 
@@ -38,6 +38,8 @@ export class StreamPropertyChangedEvent extends Event {
      * Cause of the change on the stream's property:
      * - For `videoActive`: `"publishVideo"`
      * - For `audioActive`: `"publishAudio"`
+     * - For `videoTrack`: `"trackReplaced"`
+     * - For `audioTrack`: `"trackReplaced"`
      * - For `videoDimensions`: `"deviceRotated"`, `"screenResized"` or `"trackReplaced"`
      * - For `filter`: `"applyFilter"`, `"execFilterMethod"` or `"removeFilter"`
      */