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Fix FFmpeg Audio Sync Issues After Conversion - Windows Update 404 Not Found: Practical Checklist-Troubleshooting Nginx 404 Due to Missing Index File

2026-06-13 13:18:31office-tools
Fix FFmpeg Audio Sync Issues After Conversion - Windows Update 404 Not Found: Practical Checklist-Troubleshooting Nginx 404 Due to Missing Index File

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.