\documentclass{bidipresentation}
\usepackage{color, graphicx}
\geometry{top=15mm}
\usepackage{environ,flowfram}
\usepackage{ptext}
\usepackage{xepersian}
\settextfont[Scale=1.25]{Yas}

\newdynamicframe[2,>1]{\textwidth}{1cm}{0cm}{\textheight}[header]
\setdynamicframe*{header}{valign=c,textcolor=red,backcolor=yellow}


\NewEnviron{samframe}[1]{
\begin{plainslide}[
\begin{dynamiccontents*}{header}
\hspace*{1cm}
\begin{large}
\textbf{#1}
\end{large}
\end{dynamiccontents*}
]
\BODY
\end{plainslide}
}

\begin{document}

%\backgroundsetup{contents=\includegraphics{simurgh}}


\begin{plainslide}
\centering
بسم الله الرحمن الرحیم
\end{plainslide}


\begin{samframe}{عنوان فریم}
\ptext[1-3]
\end{samframe}
\end{document}