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?

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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
@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
@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
Ah, yes, I still had [plain] in my test file. – Alan Munn Apr 2 '11 at 16:29
@Alan and in fact, even if the answers had been identical, I think the questions are different enough that I don't think this should be closed... – Seamus Apr 2 '11 at 16:42

\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

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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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

It might additionally be necessary to use \setbeamertemplate{background canvas}[default] before \setbeamercolor{background canvas}{bg=black}. Have a look at this post.

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