[Tex/LaTex] Beamer: Exclude TOC from increasing pagecounter

beamerpage-numbering

I would like to exlude the TOC slide which appear when ever a new 'section' starts to increase the pagecounter, automatically. Furthermore, it would be nice to hide the pagenumber of these TOC slides.

An example:

Currently its like this:
Titlepage ( in the right bottom corner: 1 / 34)
new section / TOC (2/34)
Content 1 (3/34)
new section / TOC (4/34)
…

Desired:
Titlepage ( in the right bottom corner: 1 / 34)
new section / TOC (no pagenumber )
Content 1 (2/34)
new section / TOC (no pagenumber )
…

Best Answer

If you do not want to count the TOC slides in your pagecounter, you can reset the pagecounter after these slides with \addtocounter{page}{-1}. However this also affects the total number of frames, so it would for example be

1/32, none, 2/32, none ...

instead of your proposed

1/34, none, 2/34, none ...

To hide the page number on the TOC slides, you can try the option \begin{frame}[plain].

\documentclass{beamer}

\usepackage[latin1]{inputenc}

\usepackage[absolute,overlay]{textpos}
\setbeamertemplate{navigation symbols}{}

\setbeamertemplate{footline}{%
    \begin{picture}(54,12.5)(0,0)
        \put(0.9,0.52){%
            \begin{minipage}[b][12.5mm][c]{112.5mm}
                \raggedleft
                \insertpagenumber/\insertpresentationendpage
            \end{minipage}
        }
    \end{picture}
}

\begin{document}

    \frame{
        \titlepage
    }

    \AtBeginSection[]{
        \begin{frame}[plain]
            \frametitle{Overview}
            \tableofcontents[currentsection]
            \addtocounter{page}{-1}
        \end{frame}
    }

\section{test1}

    \begin{frame}
        test
    \end{frame}

\section{test2}

    \begin{frame}
        test
    \end{frame}


\end{document}

Edit:

Based on @Tom's comment, here a more elegant solution

\documentclass{beamer}

\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}[frame number]

\AtBeginSection[]{
    \begin{frame}[noframenumbering, plain]
        \frametitle{Overview}
        \tableofcontents[currentsection]
    \end{frame}
}

\begin{document}

    \frame{
        \titlepage
    }

    \section{test1}

    \begin{frame}
        test
    \end{frame}

    \section{test2}

    \begin{frame}
        test
    \end{frame}


\end{document}
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