From 7e62c2fc651f71613cc0147c0c4d81b2dabe1291 Mon Sep 17 00:00:00 2001
From: ValueOn AG <p.motsch@valueon.ch>
Date: Fri, 27 Feb 2026 13:32:08 +0100
Subject: [PATCH] Voice fix: clone TTS track to prevent Teams from killing it
 via track.stop()

Made-with: Cursor
---
 src/bot/audioProcedure.ts | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/bot/audioProcedure.ts b/src/bot/audioProcedure.ts
index d37459f..b301482 100644
--- a/src/bot/audioProcedure.ts
+++ b/src/bot/audioProcedure.ts
@@ -62,8 +62,8 @@ export class AudioProcedure {
           // Build a new stream: our TTS audio track + their video tracks
           const combinedStream = new MediaStream();
 
-          // Add our controlled audio track (TTS will be piped here)
-          streamDest.stream.getAudioTracks().forEach(t => combinedStream.addTrack(t));
+          // Clone the TTS track so Teams can't kill the original via track.stop()
+          streamDest.stream.getAudioTracks().forEach(t => combinedStream.addTrack(t.clone()));
 
           // Keep the real video tracks (from fake camera)
           realStream.getVideoTracks().forEach(t => combinedStream.addTrack(t));
@@ -114,14 +114,15 @@ export class AudioProcedure {
                 // #region agent log
                 diag.beforeSenderTrackIds.push(sender.track.id);
                 // #endregion
-                await sender.replaceTrack(ttsTrack);
+                const freshClone = ttsTrack.clone();
+                await sender.replaceTrack(freshClone);
                 replaced++;
                 // #region agent log
                 const afterTrack = sender.track;
                 diag.afterSenderTrackIds.push(afterTrack?.id || 'null');
                 diag.afterSenderTrackEnabled = afterTrack?.enabled;
                 diag.afterSenderTrackReadyState = afterTrack?.readyState;
-                // Force track enabled just in case
+                diag.originalTrackState = ttsTrack.readyState;
                 if (afterTrack && !afterTrack.enabled) {
                   afterTrack.enabled = true;
                   diag.forcedEnabled = true;