MTD ( Myth Transcoding Daemon )
Transcoding ("ripping") a DVD requires you to run the Myth Transcoding Daemon (mtd). To ensure that mtd is configured correctly, you should first test it at the command line.
$ mtd -n
The last line of text should show something like:
mtd is listening on port 2342
This indicates that mtd is ready for use. Once you've successfully tested mtd in the foreground, type CTRL-C to stop mtd. You may then start it as a background (daemon) process.
$ mtd -d
Database tables that configure MTD