diff --git a/packages/spf/src/dom/features/setup-mediasource.ts b/packages/spf/src/dom/features/setup-mediasource.ts
index 63e2cb17..19549d58 100644
--- a/packages/spf/src/dom/features/setup-mediasource.ts
+++ b/packages/spf/src/dom/features/setup-mediasource.ts
@@ -61,7 +61,10 @@ export function setupMediaSource({
         settingUp = true;
 
         // Create MediaSource
-        const mediaSource = createMediaSource({ preferManaged: true });
+        // Note: ManagedMediaSource (Safari) requires disableRemotePlayback and
+        // startstreaming/endstreaming event handling that SPF doesn't yet implement.
+        // Use standard MediaSource until ManagedMediaSource support is added.
+        const mediaSource = createMediaSource();
 
         // Attach to element
         attachMediaSource(mediaSource, currentOwners.mediaElement!);
diff --git a/packages/spf/src/dom/features/tests/setup-mediasource.test.ts b/packages/spf/src/dom/features/tests/setup-mediasource.test.ts
index 5153938f..e5dfb3ba 100644
--- a/packages/spf/src/dom/features/tests/setup-mediasource.test.ts
+++ b/packages/spf/src/dom/features/tests/setup-mediasource.test.ts
@@ -106,7 +106,7 @@ describe('setupMediaSource', () => {
 
     // Wait for async operation
     await vi.waitFor(() => {
-      expect(createMediaSource).toHaveBeenCalledWith({ preferManaged: true });
+      expect(createMediaSource).toHaveBeenCalledWith();
     });
 
     cleanup();