private void ButtonBrowseMp4box_Click(object sender, EventArgs e)
        {
            try
            {
                OpenFileDialogMisc.Title  = "MP4Box.exe の場所を指定";
                OpenFileDialogMisc.Filter = "実行ファイル|*" + Common.FILE_EXT_EXE + "|すべてのファイル|*.*";
                if (OpenFileDialogMisc.ShowDialog(this) != DialogResult.OK)
                {
                    return;
                }

                mMnktSettings.Mp4boxPathSeed = OpenFileDialogMisc.FileName;
                UpdateMp4box();
            }
            catch (Exception oExcep)
            {
                mLogWriter.ShowLogMessage(TraceEventType.Error, "MP4Box 参照時エラー:\n" + oExcep.Message);
                mLogWriter.ShowLogMessage(Common.TRACE_EVENT_TYPE_STATUS, " スタックトレース:\n" + oExcep.StackTrace);
            }
        }
        // ====================================================================
        // private メンバー関数
        // ====================================================================

        // --------------------------------------------------------------------
        // 入力元動画を参照
        // --------------------------------------------------------------------
        private void BrowseInputMovie(Label oTargetLabel, String oMovieKind)
        {
            try
            {
                OpenFileDialogMisc.Title  = "入力元動画(" + oMovieKind + ")の場所を指定";
                OpenFileDialogMisc.Filter = "mp4 動画ファイル|*" + Common.FILE_EXT_MP4 + "|すべてのファイル|*.*";
                if (OpenFileDialogMisc.ShowDialog(this) != DialogResult.OK)
                {
                    return;
                }

                oTargetLabel.Text = OpenFileDialogMisc.FileName;
                UpdateAllInputMovieUi();
                UpdateGuide();
                UpdateOutputPath();
            }
            catch (Exception oExcep)
            {
                mLogWriter.ShowLogMessage(TraceEventType.Error, "入力元動画参照時エラー:\n" + oExcep.Message);
                mLogWriter.ShowLogMessage(Common.TRACE_EVENT_TYPE_STATUS, " スタックトレース:\n" + oExcep.StackTrace);
            }
        }