\documentclass{beamer}

\usepackage{movie15}

\begin{document}

\begin{frame}{El paquete {\tt movie15}}

  \begin{center}
    \includemovie[poster,text={\small(Cargando...)}]
                  {6cm}{6cm}{../img/Circle-m-increase3.mp4}
  \end{center}

\end{frame}

\end{document}
