\RequirePackage{tikz}

\setbeamerfont{footer bar}{size=\scriptsize}
\setbeamerfont{footer bar small}{size=\scriptsize}
\setbeamerfont{footer bar tiny}{size=\tiny}

\setbeamerfont{date}{size=\tiny}

\newlength{\shortfooterwidth}
\setlength{\shortfooterwidth}{8.3mm}

\newlength{\longfooterwidth}
\setlength{\longfooterwidth}{\paperwidth}
\addtolength{\longfooterwidth}{-\shortfooterwidth}
\addtolength{\longfooterwidth}{-0.8mm}

\newlength{\bluefooterheight}
\setlength{\bluefooterheight}{3.5mm}

\setbeamertemplate{footline}{%
  \begin{minipage}[b]{\shortfooterwidth}
    \begin{beamercolorbox}[wd=\shortfooterwidth, ht=\bluefooterheight]{footer bar}
      \bf\ifnum\thepage>1\relax%
        \hfill
        % \insertframenumber\,/\,\insertpresentationendframe\kern1em\vskip2pt%
        \usebeamerfont{footer bar tiny}\insertframenumber\kern2mm\vskip2.5pt%
      \fi
    \end{beamercolorbox}
  \end{minipage}%
  \hfill%
  \begin{minipage}[b]{\longfooterwidth}
    \begin{beamercolorbox}[wd=\longfooterwidth, ht=\bluefooterheight]{footer bar}
      \kern1em%
      {\usebeamerfont{footer bar small}%
       \insertshortauthor~\textperiodcentered~%
       \insertshorttitle}
      \hfill
      \usebeamerfont{footer bar small}
      \bf hhu.de\kern8mm\vskip0.9pt%
    \end{beamercolorbox}
  \end{minipage}
}
