diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/StreamPlayerEngine.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/StreamPlayerEngine.kt
index 262debcb..75f69a54 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/StreamPlayerEngine.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/StreamPlayerEngine.kt
@@ -20,7 +20,8 @@ import kotlin.math.roundToInt
 /** Один worker владеет декодерами и AudioTrack. Hardware audio clock управляет временем показа видео.
  * Просроченные P-кадры декодируются без показа, чтобы сохранить references; при переполнении ждём KEY.
  * viewerLock сериализует stop/open разных экранов до подтверждения освобождения native owner. */
-class StreamPlayerEngine(private val group: Long, private val source: Long, private val muteAudio: Boolean = false) {
+class StreamPlayerEngine(private val group: Long, private val source: Long, private val epoch: Long,
+                         private val muteAudio: Boolean = false) {
     companion object { private val viewerLock = ReentrantLock() }
     private data class Frame(val pts: Long, val key: Boolean, val width: Int, val height: Int, val rotation: Int, val data: ByteArray)
     private val mutableAspect = MutableStateFlow(16f / 9f)
@@ -120,7 +121,7 @@ class StreamPlayerEngine(private val group: Long, private val source: Long, priv
             }
         }
         try {
-            check(NativeLib.streamOpen(id, group, source)) { "Viewer open refused" }
+            check(NativeLib.streamOpen(id, group, source, epoch = epoch)) { "Viewer open refused" }
             val openDeadline = System.nanoTime() + 10_000_000_000
             var opened = false
             var prefillUntil = 0L
@@ -131,7 +132,7 @@ class StreamPlayerEngine(private val group: Long, private val source: Long, priv
                     if (raw != null) {
                         check(raw.size >= 20)
                         val b = ByteBuffer.wrap(raw).order(ByteOrder.BIG_ENDIAN)
-                        val kind = b.get().toInt(); val key = b.get().toInt() and 1 != 0
+                        val kind = b.get().toInt(); val flags = b.get().toInt() and 255; val key = flags and 1 != 0
                         val width = b.short.toInt() and 65535; val height = b.short.toInt() and 65535
                         val rotation = b.short.toInt() and 65535; val pts = b.long; val size = b.int
                         check(size == b.remaining())
@@ -161,7 +162,17 @@ class StreamPlayerEngine(private val group: Long, private val source: Long, priv
                             3 -> { LogManager.addLog("INFO", "stream", "viewer GAP id=$id"); resetVideo(); resetAudio(); videoBase = -1; prefillUntil = 0 }
                             4 -> opened = true
                             5 -> ended = true
-                            6 -> error("Native viewer closed")
+                            6 -> {
+                                mutableStatus.value = when (flags) {
+                                    1 -> R.string.stream_group_closed
+                                    2 -> R.string.chat_service_stopped
+                                    3 -> R.string.stream_source_changed
+                                    4 -> R.string.stream_member_removed
+                                    else -> R.string.stream_failed
+                                }
+                                LogManager.addLog("WARN", "stream", "native viewer closed id=$id group=$group source=$source epoch=$epoch reason=$flags")
+                                ended = true; running = false
+                            }
                             else -> error("Unknown media event=$kind")
                         }
                     }
diff --git a/tools/chatgui-android/app/src/main/res/values-ru/strings.xml b/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
index 63b76696..4ae65ff1 100644
--- a/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
+++ b/tools/chatgui-android/app/src/main/res/values-ru/strings.xml
@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="stream_title">Трансляции</string>
+    <string name="stream_available">Трансляции: %1$d</string>
+    <string name="stream_choose_source">Выберите трансляцию</string>
+    <string name="stream_list_failed">Не удалось получить список трансляций</string>
+    <string name="stream_source_changed">Трансляция перезапущена или завершена. Выберите источник заново.</string>
+    <string name="stream_member_removed">Источник больше не является участником канала</string>
+    <string name="stream_group_closed">Канал закрыт</string>
     <string name="stream_start">Начать трансляцию</string>
     <string name="stream_stop">Остановить трансляцию</string>
     <string name="stream_live">Прямая трансляция</string>
diff --git a/tools/chatgui-android/app/src/main/res/values/strings.xml b/tools/chatgui-android/app/src/main/res/values/strings.xml
index e09b866d..c451e585 100644
--- a/tools/chatgui-android/app/src/main/res/values/strings.xml
+++ b/tools/chatgui-android/app/src/main/res/values/strings.xml
@@ -1,6 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="stream_title">Live streams</string>
+    <string name="stream_available">Live streams: %1$d</string>
+    <string name="stream_choose_source">Choose a stream</string>
+    <string name="stream_list_failed">Could not load live streams</string>
+    <string name="stream_source_changed">The stream has restarted or ended. Select a source again.</string>
+    <string name="stream_member_removed">The source is no longer a channel member</string>
+    <string name="stream_group_closed">The channel is closed</string>
     <string name="stream_start">Start stream</string>
     <string name="stream_stop">Stop stream</string>
     <string name="stream_live">Streaming live</string>