diff --git a/VERSION.properties b/VERSION.properties
index 5bdfa0ed..9e7bd58d 100644
--- a/VERSION.properties
+++ b/VERSION.properties
@@ -1,2 +1,2 @@
-client.version=1.5.28
+client.version=1.5.29
 server.version=1.4.10
diff --git a/shine-UI/js/services/call-service.js b/shine-UI/js/services/call-service.js
index 033e7cd3..a8eb7afd 100644
--- a/shine-UI/js/services/call-service.js
+++ b/shine-UI/js/services/call-service.js
@@ -1535,6 +1535,15 @@ function ensureReservedVideoTransceiver(call) {
   return created;
 }
 
+function getNegotiatedVideoDirection(transceiver) {
+  return String(transceiver?.currentDirection || '').trim().toLowerCase();
+}
+
+function canLocalSideSendVideoWithCurrentNegotiation(transceiver) {
+  const negotiated = getNegotiatedVideoDirection(transceiver);
+  return negotiated === 'sendrecv' || negotiated === 'sendonly';
+}
+
 function ensureRemoteTrackObservers(call, track) {
   if (!call || !track || typeof track !== 'object') return;
   if (!call.remoteTrackObserverIds) {
@@ -2180,6 +2189,7 @@ async function applyCameraState(call) {
   const pc = call.pc;
   const hadSlotBefore = call.videoTransportMode === VIDEO_TRANSPORT_SLOT;
   const hadReservedBefore = call.videoTransportMode === VIDEO_TRANSPORT_RESERVED;
+  let requireVideoRenegotiation = false;
   let videoTransceiver = call.videoTransceiver || null;
   if (!videoTransceiver) {
     const transceivers = pc.getTransceivers?.() || [];
@@ -2218,6 +2228,7 @@ async function applyCameraState(call) {
         videoTransceiver = ensureReservedVideoTransceiver(call);
         call.videoTransceiver = videoTransceiver;
         call.videoSender = videoTransceiver?.sender || call.videoSender || null;
+        requireVideoRenegotiation = true;
       }
       try {
         if (videoTransceiver && videoTransceiver.direction !== 'sendrecv') {
@@ -2237,6 +2248,9 @@ async function applyCameraState(call) {
       }
       call.videoTransportMode = VIDEO_TRANSPORT_SLOT;
       videoTrack.enabled = true;
+      if (!canLocalSideSendVideoWithCurrentNegotiation(videoTransceiver)) {
+        requireVideoRenegotiation = true;
+      }
     } else {
       call.videoTransportMode = VIDEO_TRANSPORT_SLOT;
       const videoTrack = await ensureCameraTrack(call);
@@ -2293,6 +2307,10 @@ async function applyCameraState(call) {
     await disableCameraTrack(call);
   }
   notifyCallState();
+  if (requireVideoRenegotiation) {
+    await renegotiateCall(call, 'enable_video_reserved_sender');
+    return true;
+  }
   if (!hadSlotBefore && !hadReservedBefore && call.videoTransportMode === VIDEO_TRANSPORT_SLOT && !refreshVideoSlotReady(call)) {
     await renegotiateCall(call, 'upgrade_to_video_slot');
   }