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 64cbc5e0..4e6bc19b 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
@@ -94,14 +94,23 @@ class StreamPlayerEngine(private val group: Long, private val source: Long, priv
             resetAudio(); resetVideo(); videoBase = -1; prefillUntil = 0
             connectDeadline = System.nanoTime() + 10_000_000_000
         }
-        // Отброшенный звук всё равно прогревает Opus; остающиеся пакеты будут декодированы один раз при воспроизведении.
-        fun warmAudio(frame: Frame) {
-            if (warmAudioPts >= 0 && frame.pts != warmAudioPts) {
-                LogManager.addLog("WARN", "stream", "preroll audio discontinuity id=$id expected=$warmAudioPts pts=${frame.pts}")
+        // Прогрев допускает джиттер PTS и короткий PLC; большой разрыв начинает новое состояние Opus.
+        fun prepareAudio(pts: Long) {
+            if (warmAudioPts >= 0 && (pts < warmAudioPts - 10000 || pts > warmAudioPts + 100000)) {
+                LogManager.addLog("WARN", "stream", "preroll audio discontinuity id=$id expected=$warmAudioPts pts=$pts")
                 if (opus != 0L) NativeLib.streamOpusClose(opus)
-                opus = 0
+                opus = 0; warmAudioPts = -1
             }
             if (opus == 0L) { opus = NativeLib.streamOpusCreate(false); check(opus != 0L) }
+            val missing = if (warmAudioPts < 0) 0 else ((pts - warmAudioPts + 10000) / 20000).toInt()
+            repeat(missing) {
+                check(NativeLib.streamOpusDecode(opus, byteArrayOf()) != null) { "Preroll Opus PLC failed" }
+                prerollFrames += 960
+            }
+        }
+        // Отброшенный звук всё равно прогревает Opus; остающиеся пакеты декодируются один раз при воспроизведении.
+        fun warmAudio(frame: Frame) {
+            prepareAudio(frame.pts)
             check(NativeLib.streamOpusDecode(opus, frame.data) != null) { "Preroll Opus decode failed" }
             warmAudioPts = frame.pts + 20000; prerollFrames += 960
         }
@@ -237,12 +246,7 @@ class StreamPlayerEngine(private val group: Long, private val source: Long, priv
                 val now = System.nanoTime()
                 if (prefillUntil != 0L && now >= prefillUntil) {
                     if (audios.isNotEmpty() && track == null) {
-                        if (warmAudioPts >= 0 && audios.first.pts != warmAudioPts) {
-                            LogManager.addLog("WARN", "stream", "audio startup discontinuity id=$id expected=$warmAudioPts pts=${audios.first.pts}")
-                            if (opus != 0L) NativeLib.streamOpusClose(opus)
-                            opus = 0
-                        }
-                        if (opus == 0L) { opus = NativeLib.streamOpusCreate(false); check(opus != 0L) }
+                        prepareAudio(audios.first.pts)
                         track = AudioTrack.Builder().setAudioAttributes(AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_MEDIA)
                             .setContentType(AudioAttributes.CONTENT_TYPE_MOVIE).build()).setAudioFormat(AudioFormat.Builder()
                             .setSampleRate(48000).setChannelMask(AudioFormat.CHANNEL_OUT_STEREO).setEncoding(AudioFormat.ENCODING_PCM_16BIT).build())