How to remove footline on the title page of beamer slides
You can redefine footline
locally for the title frame; I also modified the framenumber
counter so that the frames including the footline start from one:
\documentclass{beamer}
\useoutertheme{infolines}
\setbeamertemplate{footline}{\hspace*{.5cm}\scriptsize{\insertshorttitle
\hspace*{50pt} \hfill\insertframenumber\hspace*{.5cm}}\\
\vspace{9pt}}
\author{An Author}
\title{The Title}
\begin{document}
{
\setbeamertemplate{footline}{}
\begin{frame}
\titlepage
\end{frame}
}
\addtocounter{framenumber}{-1}
\begin{frame}
A frame with footline
\end{frame}
\end{document}
Here is solution via the plain
option of frame environment (this solution works even with the ignorenonframetext
option).
\documentclass[ignorenonframetext]{beamer}
\useoutertheme{infolines}
\setbeamertemplate{footline}{\hspace*{.5cm}\scriptsize{\insertshorttitle
\hspace*{50pt} \hfill\insertframenumber\hspace*{.5cm}}\\
\vspace{9pt}}
\author{An Author}
\title{The Title}
\begin{document}
\begin{frame}[plain]
\titlepage
\end{frame}
\begin{frame}
A frame with footline
\end{frame}
\end{document}