Beamer presentation with 16:9 aspect ratio and same height as 4:3 aspect ratio? [duplicate]

Question

Beamer 4:3 presentations are a bit taller than the 16:9 ones (see Beamer user guide, section 8.3 Frame and Margin Sizes) :

• aspectratio=43 : 128 mm by 96 mm (6mm taller)
• aspectratio=169 : 160 mm by 90 mm

I would like both aspect ratios to have the same height to be able to easily have a 16:9 presentation when needed without further modifications. For example, with the quarantine lockdown, I'm uploading videos of my presentations, hence I would prefer to use a wider format.

Is it possible to easily customize the dimensions of the 16:9 aspect ratio to have the same height as the 4:3 aspect ratio ?

\documentclass[aspectratio=169]{beamer}
\usepackage{tikz}

\begin{document}

\begin{frame}
\frametitle{Minimal Working Example 16:9}
\LARGE
\foreach \i in {0,...,10}
{
  \i\\
}

\end{frame}

\end{document}

Answer 1

beamer uses geometry package to setup paper size. So you can use something similar to

% use it before \begin{document}
\geometry{paperwidth=500pt, paperheight=200pt}

to change the paper size.

Answer 2

With a couple of exceptions, all aspect ratios will produce frames of the same height. They will only differ in the width of the frame.

Unfortunately the 169 aspect ratio is such a special case, but you can get the same ratio with 3218 (or any other multiple of 16 and 9 which aren't too big (the ratio can have 4 digits max)):

\documentclass[aspectratio=3218]{beamer}
\usepackage{tikz}

\begin{document}

\begin{frame}
\frametitle{Minimal Working Example 16:9}
\LARGE
\foreach \i in {0,...,10}
{
  \i\\
}

\end{frame}

\end{document}