fix(ios): enable PiP subtitles

ios/Runner.xcodeproj/project.pbxproj

@@ -789,7 +789,7 @@
 			repositoryURL = "https://github.com/edde746/MPVKit";
 			requirement = {
 				kind = revision;
-				revision = 42dcc3123000361d0be54fbaec981043b77e1e05;
+				revision = 8da57fe1d3dd82524ea4b2ef6ef8b2d692ada395;
 			};
 		};
 /* End XCRemoteSwiftPackageReference section */

ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -40,7 +40,7 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/edde746/MPVKit",
       "state" : {
-        "revision" : "42dcc3123000361d0be54fbaec981043b77e1e05"
+        "revision" : "8da57fe1d3dd82524ea4b2ef6ef8b2d692ada395"
       }
     },
     {

ios/Runner.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -40,7 +40,7 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/edde746/MPVKit",
       "state" : {
-        "revision" : "42dcc3123000361d0be54fbaec981043b77e1e05"
+        "revision" : "8da57fe1d3dd82524ea4b2ef6ef8b2d692ada395"
       }
     },
     {

ios/Runner/MpvPlayer/MpvPlayerPlugin.swift

@@ -188,6 +188,7 @@ class MpvPlayerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler, MpvPluginS
     guard let playerCore = playerCore else { return nil }
     guard let pip = ensurePipController() else { return nil }
     pendingInlineRestoreAfterPip = false
+    playerCore.setPipSubtitleCompositing(true)
     playerCore.isPipStarting = true
     pip.syncTimebase(currentTime: playerCore.timePos, isPlaying: !playerCore.isPaused)
     pip.invalidatePlaybackState()
@@ -232,6 +233,7 @@ class MpvPlayerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler, MpvPluginS
 
   /// Unified cleanup for all PiP exit paths
   private func cleanupPip(notify: Bool, pause: Bool = false) {
+    playerCore?.setPipSubtitleCompositing(false)
     playerCore?.isPipStarting = false
     playerCore?.isPipActive = false
     isManualPipRequest = false

shared/apple/MpvPlayer/MpvPlayerCoreBase.swift

@@ -426,6 +426,22 @@ class MpvPlayerCoreBase: NSObject {
     }
   }
 
+  /// PiP presents the AVSampleBufferDisplayLayer directly, so subtitles must
+  /// be composited into the video samples instead of the inline OSD layer.
+  func setPipSubtitleCompositing(_ enabled: Bool) {
+    #if os(iOS)
+      let value = enabled ? "yes" : "no"
+      setRawStringPropertyAsync("avfoundation-pip-composite-osd", value: value) { result in
+        if case .failure(let error) = result {
+          print(
+            "[MpvPlayerCore] Failed to set PiP subtitle compositing "
+              + "to \(value): \(error.localizedDescription)"
+          )
+        }
+      }
+    #endif
+  }
+
   func getPropertyAsync(_ name: String, completion: @escaping (Result<String?, Error>) -> Void) {
     guard let mpv else {
       completion(.success(nil))
@@ -611,7 +627,7 @@ class MpvPlayerCoreBase: NSObject {
 
   private func isManagedRendererProperty(_ name: String) -> Bool {
     name == "vo" || name == "wid" || name == "gpu-api" || name == "gpu-context"
-      || name == "avfoundation-composite-osd"
+      || name == "avfoundation-composite-osd" || name == "avfoundation-pip-composite-osd"
   }
 
   private func updateVideoGravityIfNeeded(name: String, value: String) {