vlc_flutter_player 7.4.4 throws PlatformException (PlatformException(channel-error, Unable to establish connection on channel., null, null)) on android

[alohadance98]

I have download vlc_flutter_player 7.4.4 and run example app but the vlc throws error PlatformException in example app

D/SurfaceComposerClient(30016): VRR [FRTC] client handle [bufferId:18446744073709551615 framenumber:0] [ffffffff, ffffffff]
E/flutter (30016): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null)
E/flutter (30016): #0      VlcPlayerApi.initialize (package:flutter_vlc_player_platform_interface/src/messages/messages.dart:632:7)
messages.dart:632
E/flutter (30016): <asynchronous suspension>
E/flutter (30016): 
I/Choreographer(30016): Skipped 643 frames!  The application may be doing too much work on its main thread.
I/Quality (30016): Skipped: false 643 cost 7149.087 refreshRate 0 processName software.solid.example
D/SurfaceComposerClient(30016): VRR [FRTC] client handle [bufferId:18446744073709551615 framenumber:0] [ffffffff, ffffffff]
I/OpenGLRenderer(30016): Davey! duration=7231ms; Flags=1, FrameTimelineVsyncId=1938030, IntendedVsync=582747303536465, Vsync=582754447980838, InputEventId=0, HandleInputStart=582754453193005, AnimationStart=582754453203370, PerformTraversalsStart=582754453212120, DrawStart=582754481826182, FrameDeadline=582747319758687, FrameInterval=582754452623214, FrameStartTime=11111111, SyncQueued=582754484829516, SyncStart=582754484969099, IssueDrawCommandsStart=582754485829984, SwapBuffers=582754530980557, FrameCompleted=582754535573682, DequeueBufferDuration=725000, QueueBufferDuration=1976875, GpuCompleted=582754535573682, SwapBuffersCompleted=582754534821078, DisplayPresentTime=504607341152, 
I/flutter (30016): [IMPORTANT:flutter/shell/platform/android/platform_view_android.cc(356)] Flutter recommends migrating plugins that create and register surface textures to the new surface producer API. See https://docs.flutter.dev/release/breaking-changes/android-surface-plugins
I/PlatformViewsController(30016): Hosting view in view hierarchy for platform view: 0
I/PlatformViewsController(30016): PlatformView is using SurfaceProducer backend
E/FrameEvents(30016): updateAcquireFence: Did not find frame.
I/Quality (30016): Skipped: false 8 cost 98.39921 refreshRate 0 processName software.solid.example
D/ProfileInstaller(30016): Installing profile for software.solid.example
E/FrameEvents(30016): updateAcquireFence: Did not find frame.

[FlawLessx]

did you find solution?

[alohadance98]

did you find solution?

I am still waiting for oganize response and hotfix version. I just know after update version of libvlc-all the PlatformException appears

[twix44]

this issue after the latest library update

Flutter 3.35.3 Platform: Android flutter_vlc_player : 7.4.4

Error message:

P/Quality ( 2103): 07 02 block_gc block_gc otv. player 2103 10510984 1535 I/otv. playe( 2103): WaitForGcToComplete blocked ProfileSaver on HeapTrim for 531.164ms W/Looper ( 2103): Slow delivery took 3386ms main h=android.os.Handler c=io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0@28db91b m=0 W/Looper ( 2103): Drained E/flutter ( 2103): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null) E/flutter ( 2103): #0 VlcPlayerApi.initialize (package:flutter_vlc_player_platform_interface/src/messages/messages.dart:632:7) E/flutter ( 2103): <asynchronous suspension> E/flutter ( 2103): I/PlatformViewsController( 2103): Hosting view in view hierarchy for platform view: 0 I/PlatformViewsController( 2103): PlatformView is using SurfaceProducer backend D/otv. playe( 2103): DDpid=2103 tid=2160 name=com. . player W/Gralloc4( 2103): allocator 3.x is not supported W/Gralloc3( 2103): allocator 3.x is not supported E/FrameEvents( 2103): updateAcquireFence: Did not find frame. D/otv. playe( 2103): DDpid=2103 tid=2160 name=com. . player E/FrameEvents( 2103): updateAcquireFence: Did not find frame. E/flutter ( 2103): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null) E/flutter ( 2103): #0 VlcPlayerApi.create (package:flutter_vlc_player_platform_interface/src/messages/messages.dart:658:7) E/flutter ( 2103): <asynchronous suspension> E/flutter ( 2103): #1 VlcPlayerController.initialize (package:flutter_vlc_player/src/vlc_player_controller.dart:191:5) E/flutter ( 2103): <asynchronous suspension> E/flutter ( 2103): #2 VlcPlayerController.onPlatformViewCreated (package:flutter_vlc_player/src/vlc_player_controller.dart:969:7) E/flutter ( 2103): <asynchronous suspension> E/flutter ( 2103): I/otv. playe( 2103): NativeAlloc concurrent copying GC freed 673065(25MB) AllocSpace objects, 0(0B) LOS objects, 49% free, 3076KB/6153KB, paused 134us total 171.812ms

[alohadance98]

UPDATE: there is a package flutter_vlc_player_16kb on pub.dev which already supports 16kb page size and runs smoothly, you can switch to it @FlawLessx @twix44

[FlawLessx]

Thanks for the suggestion @alohadance98 , but now im migrating to media_kit since it use libmpv that reduce app size too

[Zeus178]

UPDATE: there is a package flutter_vlc_player_16kb on pub.dev which already supports 16kb page size and runs smoothly, you can switch to it @FlawLessx @twix44

I tried flutter_vlc_player_16Kb but still encountered the same error. Do you have a solution yet?

[rochelryu]

Anyone have one solution on this bug ?

[rochelryu]

this is my error: PlatformException(channel-error, Unable to establish connection on channel., null, null) I/flutter ( 9282): ┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── I/flutter ( 9282): │ #0 main. (package:stream_ryu/main.dart:106:12) I/flutter ( 9282): │ #1 _RootZone.runBinary (dart:async/zone.dart:1854:54) I/flutter ( 9282): ├┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄ I/flutter ( 9282): │ ⛔ Stack trace: #0 VlcPlayerApi.create (package:flutter_vlc_player_platform_interface/src/messages/messages.dart:658:7) I/flutter ( 9282): │ ⛔ I/flutter ( 9282): │ ⛔ #1 VlcPlayerController.initialize (package:flutter_vlc_player/src/vlc_player_controller.dart:191:5) I/flutter ( 9282): │ ⛔ I/flutter ( 9282): │ ⛔ #2 VlcPlayerController.onPlatformViewCreated (package:flutter_vlc_player/src/vlc_player_controller.dart:969:7) I/flutter ( 9282): │ ⛔ I/flutter ( 9282): │ ⛔ I/flutter ( 9282): └─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── E/FrameEvents( 9282): updateAcquireFence: Did not find frame. D/EGL_emulation( 9282): app_time_stats: avg=23094.62ms min=23094.62ms max=23094.62ms count=1

this is my code: import 'package:flutter_vlc_player/flutter_vlc_player.dart'; import 'package:stream_ryu/core/utils/logger.dart'; import '../di/service_locator.dart'; import '../storage/secure_storage_local.dart'; import '../utils/channel_helper.dart'; import 'dart:async';

class VlcPlayerService { VlcPlayerController? _controller; bool _isAndroidTV = false; Timer? _healthCheckTimer; Timer? _reconnectTimer; int _bufferHealthChecks = 0; int _reconnectAttempts = 0; static const int _maxReconnectAttempts = 3; String? _lastUrl; String? _lastReferer; String? _lastOrigin; final SecureStorage secureStorage = sl<SecureStorage>(); int? performance;

VlcPlayerController? get controller => _controller;

/// Détection rapide Android TV void _initializeDeviceInfo(bool isAndroidTV) { _isAndroidTV = isAndroidTV; }

Future loadPerformance() async { performance = await secureStorage.getPerformance(); }

/// Prépare le player avec stratégies optimisées Future<VlcPlayerController> prepare({ required String url, required bool isAndroidTV, String? referer, String? origin, bool autoPlay = true, }) async { _initializeDeviceInfo(isAndroidTV); await loadPerformance();

// Sauvegarde pour reconnexion
_lastUrl = url;
_lastReferer = referer;
_lastOrigin = origin;

// Nettoyage préventif
await _cleanupTimers();
_reconnectAttempts = 0;

final strategy = _isAndroidTV
    ? PlayerStrategy.androidTVStable
    : PlayerStrategy.iosBalanced;

return _prepareWithStrategy(url, referer, origin, autoPlay, strategy);

}

Future<VlcPlayerController> _prepareWithStrategy( String url, String? referer, String? origin, bool autoPlay, PlayerStrategy strategy, ) async { if (_controller != null) { await _safeDispose(); }

try {
  final options = _buildOptionsForStrategy(strategy, referer, origin);

  _controller = VlcPlayerController.network(
    url,
    hwAcc: _getHwAccForStrategy(strategy),
    autoPlay: autoPlay,
    options: options,
  );

  // Surveillance pour Android TV
  if (_isAndroidTV) {
    _setupAndroidTVHealthMonitoring();
  }

  return _controller!;
} catch (e) {
  logger.e('Échec VLC avec stratégie $strategy: $e');
  rethrow;
}

}

/// Surveillance proactive de la santé du stream void _setupAndroidTVHealthMonitoring() { // Check toutes les 5 secondes (moins agressif) _healthCheckTimer = Timer.periodic(const Duration(seconds: 5), (timer) { _checkStreamHealth(); });

// Surveillance des erreurs
_controller?.addListener(() {
  final state = _controller?.value;
  if (state?.hasError == true) {
    logger.w('Erreur VLC détectée: ${state?.errorDescription}');
    _handleStreamError();
  }
});

}

/// Vérification de la santé du stream void _checkStreamHealth() { final state = _controller?.value; if (state == null || !state.isInitialized) return;

// Si le stream est en buffering trop longtemps
if (state.isBuffering) {
  _bufferHealthChecks++;
  logger.d('Stream en buffering... (${_bufferHealthChecks}/5)');
  
  if (_bufferHealthChecks >= 5) {
    logger.w('Stream bloqué en buffering, tentative de récupération');
    _handleStreamError();
  }
} else {
  _bufferHealthChecks = 0; // Reset si ça marche
}

// Reset reconnect attempts if playing well
if (state.isPlaying && !state.isBuffering) {
  _reconnectAttempts = 0;
}

}

/// Gestion intelligente des erreurs Future _handleStreamError() async { if (_reconnectAttempts >= _maxReconnectAttempts) { logger.e('Trop de tentatives de reconnexion, abandon'); return; }

_reconnectAttempts++;
_bufferHealthChecks = 0;

logger.i('Récupération automatique $_reconnectAttempts/$_maxReconnectAttempts');

try {
  await _hardRestart();
} catch (e) {
  logger.e('Erreur lors de la récupération: $e');
}

}

/// Redémarrage complet (plus sûr) Future _hardRestart() async { if (_lastUrl == null) return;

logger.i('Recréation complète du player...');

try {
  await _safeDispose();
  await Future.delayed(const Duration(milliseconds: 1000)); // Plus long pour stabilité
  
  final options = _buildOptionsForStrategy(
    PlayerStrategy.androidTVStable, 
    _lastReferer, 
    _lastOrigin
  );

  _controller = VlcPlayerController.network(
    _lastUrl!,
    hwAcc: HwAcc.auto,
    autoPlay: true,
    options: options,
  );
  
  if (_isAndroidTV) {
    _setupAndroidTVHealthMonitoring();
  }
} catch (e) {
  logger.e('Hard restart échoué: $e');
}

}

/// Hardware acceleration conservateur HwAcc _getHwAccForStrategy(PlayerStrategy strategy) { switch (strategy) { case PlayerStrategy.androidTVStable: if(performance == 0) { // Eco logger.d("Eco"); return HwAcc.disabled; } else if (performance == 1) { // Standard logger.d("Standard"); return HwAcc.auto; } else if (performance == 2) { // Optimisé logger.d("Optimisé"); return HwAcc.full; } return HwAcc.disabled; // Auto avec fallback case PlayerStrategy.iosBalanced: return HwAcc.full; } }

/// Options par stratégie VlcPlayerOptions _buildOptionsForStrategy( PlayerStrategy strategy, String? referer, String? origin, ) { switch (strategy) { case PlayerStrategy.androidTVStable: return _buildAndroidTVStableOptions(referer, origin); case PlayerStrategy.iosBalanced: return _buildIOSFastOptions(referer, origin); } }

/// Configuration Android TV stable (options validées) VlcPlayerOptions _buildAndroidTVStableOptions(String? referer, String? origin) { final extras = <String>[ '--file-caching=3000', '--network-caching=3000', '--live-caching=3000',

'--no-video-title-show',
'--intf=dummy',

'--http-reconnect',
'--http-user-agent=${getUserAgent()}',

// 🔑 Essentiel : forcer un décodage plus “souple”
'--avcodec-skiploopfilter=0',
'--avcodec-skip-frame=0',
'--avcodec-hw=any',

// Permet d’éviter le freeze vidéo
'--drop-late-frames',
'--skip-frames',
'--no-sout-video',

'--adaptive-use-access',
'--adaptive-logic=rate',
// '--verbose=2', // temporairement pour debug

];

if (referer != null && referer.isNotEmpty) { extras.add('--http-referrer=$referer'); } if (origin != null && origin.isNotEmpty) { extras.add('--http-origin=$origin'); }

return VlcPlayerOptions( advanced: VlcAdvancedOptions([ VlcAdvancedOptions.networkCaching(3000), ]), video: VlcVideoOptions([ VlcVideoOptions.dropLateFrames(true), VlcVideoOptions.skipFrames(true), ]), audio: VlcAudioOptions([ VlcAudioOptions.audioTimeStretch(true), ]), http: _buildSimpleHttpOptions(referer, origin), extras: extras, ); }

/// iOS options inchangées VlcPlayerOptions _buildIOSFastOptions(String? referer, String? origin) { final extras = <String>[ '--intf=dummy', '--no-video-title-show',

  '--network-caching=600',
  '--file-caching=300',
  '--live-caching=600',

  '--codec=videotoolbox,avcodec,any',
  '--adaptive-use-access',
  '--adaptive-logic=predictive',
  '--adaptive-maxwidth=1920',
  '--adaptive-maxheight=1080',

  '--http-reconnect',
  '--http-continuous',
  '--http-user-agent=${getUserAgent()}',
  '--no-metadata-network-access',
];

if (referer != null && referer.isNotEmpty) {
  extras.add('--http-referrer=$referer');
}
if (origin != null && origin.isNotEmpty) {
  extras.add('--http-origin=$origin');
}

return VlcPlayerOptions(
  http: _buildSimpleHttpOptions(referer, origin),
  video: VlcVideoOptions([
    VlcVideoOptions.dropLateFrames(true),
  ]),
  extras: extras,
);

}

/// HTTP options simplifiées VlcHttpOptions _buildSimpleHttpOptions(String? referer, String? origin) { final options = <String>[ VlcHttpOptions.httpReconnect(true), ];

if (referer != null && referer.isNotEmpty) {
  options.add(VlcHttpOptions.httpReferrer(referer));
}

if (origin != null && origin.isNotEmpty) {
  options.add('--http-origin=$origin'); // ajout dans http aussi
}


return VlcHttpOptions(options);

}

/// Nettoyage des timers Future _cleanupTimers() async { _healthCheckTimer?.cancel(); _reconnectTimer?.cancel(); _healthCheckTimer = null; _reconnectTimer = null; }

/// Contrôles de base Future play() async { try { await _controller?.play(); _reconnectAttempts = 0; logger.d('Lecture démarrée'); } catch (e) { logger.e("Erreur play: $e"); if (_isAndroidTV) { await _handleStreamError(); } } }

Future pause() async { try { await _controller?.pause(); logger.d('Lecture mise en pause'); } catch (e) { logger.e("Erreur pause: $e"); } }

Future stop() async { try { await _cleanupTimers(); await _controller?.stop(); logger.d('Lecture arrêtée'); } catch (e) { logger.e("Erreur stop: $e"); } }

Future dispose() async => _safeDispose();

/// Disposal ultra sécurisé Future _safeDispose() async { await _cleanupTimers();

try {
  await _controller?.stopRendererScanning();
  await _controller?.dispose();
  await Future.delayed(const Duration(milliseconds: 300));
    _controller = null;
    logger.d("VLC disposé proprement");
  } catch (e) {
    logger.e("VLC dispose error: $e");
  }

}

// Getters de base bool get isPlaying => _controller?.value.isPlaying ?? false; bool get isInitialized => _controller?.value.isInitialized ?? false; bool get hasError => _controller?.value.hasError ?? false; bool get isBuffering => _controller?.value.isBuffering ?? false;

// Contrôles essentiels Future seekTo(Duration position) async { try { await _controller?.seekTo(position); } catch (e) { logger.e("Erreur seek: $e"); } }

Future setVolume(int volume) async { try { await _controller?.setVolume(volume.clamp(0, 100)); } catch (e) { logger.e("Erreur volume: $e"); } }

/// Force une récupération manuelle Future forceRecover() async { if (_isAndroidTV) { logger.i("Récupération manuelle forcée"); await _hardRestart(); } }

/// Statistiques de santé Map<String, dynamic> get healthStats => { 'reconnectAttempts': _reconnectAttempts, 'bufferHealthChecks': _bufferHealthChecks, 'isHealthy': _reconnectAttempts == 0 && _bufferHealthChecks < 3, 'hasMonitoring': _healthCheckTimer?.isActive ?? false, }; }

enum PlayerStrategy { androidTVStable, iosBalanced, }

[rochelryu]

The problem depend of new version flutter stable.

[Zeus178]

The problem depend of new version flutter stable.

Have you found a solution yet? If so, please share it with me.

[alohadance98]

@rochelryu @Zeus178 there is a package fork from vlc_flutter_player which has been fix the error in my comment above

[Zeus178]

@rochelryu @Zeus178 there is a package fork from vlc_flutter_player which has been fix the error in my comment above

i tried flutter_vlc_player_16kb: ^7.4.7 but still same err

[hezhipengzipp]

This modification can solve

[CristianCruz-Almanza]

Has anyone been able to find a solution to this problem?

[rochelryu]

@alohadance98 @Zeus178 @CristianCruz-Almanza , flutter_vlc_player_16kb (https://pub.dev/packages/flutter_vlc_player_16kb) solve this problem but, is not stable on live stream.

@hezhipengzipp Which file should we modify on this picture ?

[hezhipengzipp]

After locking the screen and leaving it idle for a while, calling initialize on vlc_player_controller again will result in PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.flutter_vlc_player_platform_interface.VlcPlayerApi.create"., null, null)

[jorelkimcruz]

After locking the screen and leaving it idle for a while, calling initialize on vlc_player_controller again will result in PlatformException(channel-error, Unable to establish connection on channel: "dev.flutter.pigeon.flutter_vlc_player_platform_interface.VlcPlayerApi.create"., null, null)

You can't remove the flutterInjector initialization because FlutterVlcPlayerFactory depends on data provided by that object. specifically injector.flutterLoader()::getLookupKeyForAsset

[babayanta1994]

Has anyone managed to solve this terrible problem?

[Renarde-dev]

Hi, running on the same issue as everyone. Playing videos work in a test environment but implementing vlc player in https://github.com/Piwigo/piwigo-flutter-app/pull/228 doesn't.

This result in infinite loading and [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null) while trying flutter vlc 16kb will outright crash the app with E/VLC ( 9987): [0000006e60bfb440/27b0] http generic: local stream 1 error: Stream closed (0x5)

[nechtas]

Any updates on this? At the end of this month Play Store force to update all app bundles to 16KB page size but last release is almost not working.

[illia-romanenko]

Hi @nechtas and all. We are busy with other tasks unfortunately, so we can't get on this one right now. But I'm happy to merge any PRs that fix this issue.

[peter9teufel]

same issue, switching to flutter_vlc_player_16kb fork worked for me, so fixed for now until there's time here to fix it 👍