# Beamer - blank black frame

I'm making a presentation with LaTeX Beamer package. And I want to have a slide where the screen is all black so I can use other media. Is there a way to insert a black slide simply?

-
If you were using Impressive to display your slides, it's as simple as pressing B at the right moment... –  Seamus Apr 2 '11 at 15:38
possible duplicate of Change the background color of a frame in Beamer –  Alan Munn Apr 2 '11 at 15:44
@Alan Munn changing the background colour won't change all the frame to black. The structural elements will still be there. –  Seamus Apr 2 '11 at 15:54
@Seamus Other than the navigation symbols, changing the background canvas does exactly that. No other elements are visible. So Herbert's solution is an exact duplicate of the solutions posted in the question I reference. –  Alan Munn Apr 2 '11 at 16:17
@Seamus I just noticed it is the same with evince - my pdf viewer of choice. –  pirad Dec 8 '11 at 16:09

\documentclass{beamer}

\begin{document}

\frame{foo}

\bgroup
\setbeamercolor{background canvas}{bg=black}
\begin{frame}[plain]{}
\end{frame}
\egroup

\frame{bar}

\end{document}

-
You need \setbeamertemplate{navigation symbols}{} inside your group to make the slide totally blank. –  Seamus Apr 2 '11 at 15:56
I know, but it may still be useful to have the symbols –  Herbert Apr 2 '11 at 16:18

If you have \mode* on then the background color remains set for subsequent slides even if you have the command wrapped in a group. This works:

\mode<presentation>{
{
\setbeamercolor{background canvas}{bg=black}
\begin{frame}[plain]{}
\end{frame}
}
}
\mode<presentation>{\setbeamercolor{background canvas}{bg=white}}
\mode*

-
I assume that's in the preamble, how exactly do you switch within your document from one slide to another? –  Joanne Demmler Aug 1 '13 at 14:26