Subject: MPEG-4 AAC decoder plugin is not installed
From: [email-masked]
To: Bug Guix <[email-masked]>
Date: Wed, 4 Nov 2020 22:27:33 +0100 (CET)
List-Id: <debbugs-submit.debbugs.gnu.org>

To play a video with totem, I have this problem:
 
An error occurred
The playback of this movie requires a MPEG-4 AAC decoder plugin which is not installed.

What package should be installed?