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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?

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1  
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
1  
@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
@Alan No. The relevant difference is the plain option that turns off, say, the top bar and lower bar from the infolines outertheme. – Seamus Apr 2 '11 at 16:27
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2 Answers

up vote 13 down vote accepted 
\documentclass{beamer}

\begin{document}

\frame{foo}

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

\frame{bar}

\end{document}
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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
up vote 0 down vote

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*
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