diff --git a/Sources/HLSRecorder.swift b/Sources/HLSRecorder.swift
index da92dce..b93381e 100644
--- a/Sources/HLSRecorder.swift
+++ b/Sources/HLSRecorder.swift
@@ -216,15 +216,14 @@ final class HLSRecorder: ObservableObject {
         
         NSLog("[MiniPlayer] Recording loop exited: %d segments downloaded", downloadedSegments.count)
         
-        // 4. 合并所有 TS 片段
+        // 4. 合并所有 TS 片段（用 Data 拼接，避免 FileHandle(forWritingTo:) 不会创建文件的坑）
         let mergedTS = tempDir.appendingPathComponent("merged.ts")
-        let output = try FileHandle(forWritingTo: mergedTS)
+        var mergedData = Data()
         for segFile in downloadedSegments {
-            let segData = try Data(contentsOf: segFile)
-            output.write(segData)
+            mergedData.append(try Data(contentsOf: segFile))
         }
-        output.closeFile()
-        NSLog("[MiniPlayer] Merged %d segments → %@", downloadedSegments.count, mergedTS.path)
+        try mergedData.write(to: mergedTS)
+        NSLog("[MiniPlayer] Merged %d segments → %@ (%d bytes)", downloadedSegments.count, mergedTS.path, mergedData.count)
         
         // 5. TS → MP4（内部有超时保护）
         let outputURL = try await remuxToMP4(tsURL: mergedTS)