fix(mpv): harden native initialization and logging

ios/Runner.xcodeproj/project.pbxproj

@@ -727,6 +727,7 @@
 				MARKETING_VERSION = 1.0.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.edde746.plezy;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;

shared/apple/MpvPlayer/MpvPlayerCoreBase.swift

@@ -387,10 +387,12 @@ class MpvPlayerCoreBase: NSObject {
       return false
     }
 
-    // TEMP: always "v" (tvOS builds in release) so the avfoundation VO's
-    // osd-perf timing lines show up — restore the DEBUG/warn split after the
-    // subtitle-timing investigation.
-    checkError(mpv_request_log_messages(mpv, "v"))
+    #if DEBUG
+      let defaultLogLevel = "v"
+    #else
+      let defaultLogLevel = "warn"
+    #endif
+    checkError(mpv_request_log_messages(mpv, defaultLogLevel))
 
     configure()
 

test/mpv/player_native_bridge_test.dart

@@ -1,3 +1,5 @@
+import 'dart:async' show Completer;
+
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:plezy/mpv/models.dart';
@@ -16,6 +18,41 @@ void main() {
     await SettingsService.getInstance();
   });
 
+  test('MPV coalesces concurrent Dart initialization requests', () async {
+    final initialize = Completer<bool>();
+    final calls = <MethodCall>[];
+
+    await withMockPlayerChannels(
+      methodChannelName: 'com.plezy/mpv_player',
+      eventChannelName: 'com.plezy/mpv_player/events',
+      methodHandler: (call) {
+        calls.add(call);
+        if (call.method == 'initialize') return initialize.future;
+        return Future.value(null);
+      },
+      testBody: () async {
+        final player = PlayerNative();
+        try {
+          final logLevel = player.setLogLevel('warn');
+          final command = player.command(['stop']);
+          await Future<void>.delayed(Duration.zero);
+
+          expect(calls.where((call) => call.method == 'initialize'), hasLength(1));
+
+          initialize.complete(true);
+          await Future.wait([logLevel, command]);
+
+          expect(calls.where((call) => call.method == 'initialize'), hasLength(1));
+          expect(calls.where((call) => call.method == 'setLogLevel'), hasLength(1));
+          expect(calls.where((call) => call.method == 'command'), hasLength(1));
+        } finally {
+          if (!initialize.isCompleted) initialize.complete(true);
+          await player.dispose();
+        }
+      },
+    );
+  });
+
   test('Android command failure reaches seek recovery', () async {
     await withMockPlayerChannels(
       methodChannelName: 'com.plezy/mpv_player',
@@ -64,6 +101,28 @@ void main() {
     );
   });
 
+  test('audio setLogLevel uses the dedicated native channel', () async {
+    MethodCall? logLevelCall;
+    await withMockPlayerChannels(
+      methodChannelName: 'com.plezy/mpv_audio_player',
+      eventChannelName: 'com.plezy/mpv_audio_player/events',
+      methodHandler: (call) async {
+        if (call.method == 'initialize') return true;
+        if (call.method == 'setLogLevel') logLevelCall = call;
+        return null;
+      },
+      testBody: () async {
+        final player = PlayerNative.audio();
+        try {
+          await player.setLogLevel('v');
+          expect(logLevelCall?.arguments, {'level': 'v'});
+        } finally {
+          await player.dispose();
+        }
+      },
+    );
+  });
+
   test('Android mpv end-file error preserves native diagnostic message', () async {
     await withMockPlayerChannels(
       methodChannelName: 'com.plezy/mpv_player',

tvos/Runner.xcodeproj/project.pbxproj

@@ -862,6 +862,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.edde746.plezy;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;

windows/runner/mpv/mpv_plugin.cpp

@@ -132,6 +132,14 @@ void MpvPlayerPlugin::HandleMethodCall(
   const auto& method = method_call.method_name();
 
   if (method == "initialize") {
+    // Method-channel calls are serialized on the platform thread. Keep an
+    // already-live core instead of replacing it (which would synchronously
+    // join its event thread before MpvPlayer::Initialize can see its guard).
+    if (player_ && player_->IsInitialized()) {
+      result->Success(flutter::EncodableValue(true));
+      return;
+    }
+
     if (proc_id_) {
       registrar_->UnregisterTopLevelWindowProcDelegate(proc_id_.value());
       proc_id_ = std::nullopt;