Beamer: dissolving animation in slide transition

transition.tex

\documentclass[dvipdfmx]{beamer} %% dvipdfmx, if you use it...
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usetheme{Madrid}
\setbeamercolor{strong warn}{bg=red!80!black, fg=white}

\title{Something Not So Like an Example}
\author{Somebody Not So Like ZR}

\begin{document}

\begin{frame}{Warning}
  \transdissolve<2>[duration=0.5]
  \centering

  \Large
  Do \textit{not} use distracting special effects

  \normalsize\vspace{3\baselineskip}
  \Huge
  \textbf{like \alert{``dissolving''} slides}

  \normalsize\vspace{3\baselineskip}

  \begin{visibleenv}<2>
    \begin{beamerboxesrounded}
      [shadow=true, lower=strong warn]{}
      \Large\centering
      unless you have a very good reason for using them.
    \end{beamerboxesrounded}
  \end{visibleenv}

  \normalsize\vspace{1\baselineskip}
  
  \begin{flushright}
    \structure{(The \textsc{beamer} class: User Guide for version 3.12)}
  \end{flushright}

\end{frame}

\end{document}