In a beamer presentation with transitions/overlays I would like to include slide-filling images in the background that transition at the same time. My attempt is to use eso-pic for this, but there is a mismatch occurring: the first slide shows the second image, the second slide shows the third image, etc. Here's an MWE showing the mismatch.
\documentclass{beamer}
\usepackage{eso-pic}
\begin{document}
\usebackgroundtemplate{}
\begin{frame}
\AddToShipoutPictureBG*{%
\AtPageLowerLeft{%
\includegraphics<1>[width=\paperwidth,height=\paperheight]{example-image-a}%
\includegraphics<2>[width=\paperwidth,height=\paperheight]{example-image-b}%
\includegraphics<3>[width=\paperwidth,height=\paperheight]{example-image-c}%
}
}
\begin{itemize}
\item A
\item<2-> B
\item<3-> C
\end{itemize}
\end{frame}
\end{document}
Is there an easy way to fix this mismatch? Perhaps eso-pic is not the appropriate package, but I would like the background images to not affect (the positioning of) the slide contents.
