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+# Proprietary media support
+
+Vivaldi does not directly bundle any library with support for
+"proprietary media" (H.264/AAC), since this would make redistribution of
+the output package difficult (due to software patent licensing).
+Instead, the script '/opt/vivaldi/update-ffmpeg' fetches a suitable lib
+from a third party (and verifies it). This can be run in two ways.
+
+## System-wide install
+
+The recommended method is for the user to run it as root (with no
+arguments) immediately after installing (or upgrading) Vivaldi, but
+before first run. The file will then be placed in '/var/opt/vivaldi' and
+found by Vivaldi when you launch it afterwards.
+
+Files installed this way will even be cleaned up automatically on
+uninstall by 'douninst.sh'. Alternatively running 'update-ffmpeg' again
+(as root) with '--undo' will also remove the lib and associated
+directories.
+
+## Per-user install
+
+If you do not run the 'update-ffmpeg' as root before first run, Vivaldi
+will call this script itself, automatically on first launch (with the
+option '--user'). In this case the lib will be installed into
+'~/.local/lib/vivaldi' (for each user who launches Vivaldi) and will
+then be available, from the next restart (of the browser).
+
+If you wish to remove the file from '~/.local/lib/vivaldi', you can run
+'update-ffmpeg' as follows:
+
+ /opt/vivaldi/update-ffmpeg --user --undo
+
+Alternatively look in '~/.local/lib/vivaldi' and remove the files
+manually.
+
+NOTE: Keep in mind the lib will be automatically reinstalled in
+'~/.local/lib/vivaldi' if any user on the system launches Vivaldi again.