Beamer pdf 播放无声音的视频

Question

我的beamerpdf 播放视频，但没有音频！我的代码如下 -

\documentclass[graphics]{beamer}
 \usepackage{movie15}
 \begin{document}
 \begin{frame}{This is a movie showing a rotating wave}
 \begin{picture}(320,300)
 \put(0,80){\includemovie[poster, text={\small(Loading sample.swf)}]{9cm}{6cm}{sample.swf}}
 \put(90,260){Rotating sine}
 \end{picture}
 \end{frame}
 \end{document}