\newcommand\bithead[1]{\bitbox[]{#1}{\scriptsize #1}}
\newcommand{\colorbitbox}[3]{%
    \rlap{\bitbox{#2}{\color{#1}\rule{\width}{\height}}}%
    \bitbox{#2}{#3}}

% \begin{figure*}
%     \centering

    \begin{tikzpicture}
%     \begin{scope}
%     \coordinate (A) at (0cm,0);
%     \coordinate (B) at (7.73cm,0);
%     \draw[transform canvas={xshift = -3.5cm, yshift = 0.1cm}, <->] (A) -- (B) node[midway,fill=white] {{Frame 1}};
%     \end{scope}

%     \begin{scope}
%     \coordinate (A) at (0cm,0);
%     \coordinate (B) at (7.73cm,0);
%     \draw[transform canvas={xshift = 0.04cm - 3.5cm + 7.73cm + 0.65cm, yshift = 0.1cm}, <->] (A) -- (B) node[midway,fill=white] {{Frame N}};
%     \end{scope}
    \end{tikzpicture}

    \begin{bytefield}[bitwidth=20pt]{50}
        \bitheader{0-31} \\
        \colorbitbox{gray!20}{1}{F} & \colorbitbox{gray!60}{6}{NAL Type} & \colorbitbox{gray!20}{6}{Reserved} & \colorbitbox{gray!60}{3}{TIDP}
    \end{bytefield}

%     \caption{MRP stream frame-based structure.}\label{fig:mrp-bitstream}
% \end{figure*}