\documentclass[10pt]{article}

\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{hyperref}

\usepackage{flashmovie}

\begin{document}

{\Huge flashvideo.sty}\\\\

This package allows direct embedding of flash movies into PDF files. It is
designed for use with pdflatex.

\flashmovie[width=10cm,height=10cm]{saturn5.swf}
%\flashmovie[width=10cm,height=10cm,engine=pure-swf]{saturn5.swf}
%\flashmovie[width=10cm,height=10cm,engine=blank]{saturn5.swf}
%\flashmovie[width=10cm,height=10cm,engine=flv-player]{saturn5.mp4}
%\flashmovie[width=10cm,height=10cm,engine=flv-player,blank=0]{saturn5.mp4}
%\flashmovie[width=10cm,height=10cm,engine=flv-player,blank=1]{saturn5.mp4}
%\flashmovie[width=10cm,height=10cm,engine=acropro]{saturn5.mp4}
%\flashmovie[width=10cm,height=10cm,engine=jw-player]{saturn5.mp4}
%\flashmovie[width=10cm,height=10cm,engine=osplayer]{saturn5.mp4}

Basically it uses the fact that the Adobe Reader 9 contains an embedded Adobe Flash 
player which can be invoked with the ``rich media annotation'' feature which is described 
in ``Adobe Supplement to the ISO 32000 BaseVersion: 1.7 ExtensionLevel: 3''.

P.S.: This sample video is courtesy of the NASA ( \href{http://heasarc.gsfc.nasa.gov/Videos/historical/saturn5.avi}{saturn5.avi} ).

\end{document}