The code shows a minimal XML that can be used for the import:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mediaimport PUBLIC "-//MEDIAIMPORT//DTD MEDIAIMPORT//EN" "http://www.vimp.com/mediaimport-1.0.dtd">
<mediaimport version="1.0">
<media>
<medium>
<title>Maestro</title>
<description>Maestro</description>
<username>admin</username>
<publication>public</publication>
<categories>
<category>entertainment</category>
</categories>
</medium>
</media>
</mediaimport>
This works for the import (Backend -> Media -> Media-Import) from a "directory (on server)", via FTP or SSH server. You have to choose "XML files" to import with the minimal XML.
Important note: If you omit the <files> ... </files> block in your xml, the source file and the XML must have the same name (except of the file extension).
Example: