Latex Beamer: Animated gif files problem

\documentclass[]{beamer}
\mode<presentation>
\usepackage{beamerthemeBerkeley} 
\usefonttheme{default}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\usepackage{animate} 
\usepackage{epsfig}
\usepackage{amsfonts}
\usepackage{fancyhdr}
\usepackage{graphicx}
\usepackage{geometry}
\usepackage{watermark}
\usepackage{movie15}
\usepackage{hyperref}
\usepackage{epstopdf}
\usepackage{makeidx}
\usepackage{pgf,pgfarrows,pgfnodes}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\usepackage{epsfig}
\usepackage{amsfonts}
\usepackage{fancyhdr}
\usepackage{graphicx}
\usepackage{geometry}
\usepackage{watermark}
\usepackage{epstopdf}
\usepackage{makeidx}

\title{bla bla}   
\author{bla bla bla}               
\institute{Department of bla bla}      
\date{\today}         

\begin{document}
\begin{frame}
  \titlepage
\end{frame}
\begin{frame}
\frametitle{Introduction}
  \begin{itemize}
  \item<1-> bla bla bla
  \end{itemize}
\end{frame}

%\begin{frame}
%\frametitle{Animation}
%\begin{center}
%\animategraphics[autoplay,loop,height=5cm]{1}{my_pngfile_}{0}{n-1} 
%\end{center}
%\end{frame}
	
\end{document}