Hi Folks:

I am using Devuan Linux 4 (Chimera) on an Asus Vivobook Core i3 laptop. Everything is working great except I can't play my DVD's with the parole media player. It I run it from the command line I get the following pop-up:

Gstreamer backend error
Could not read DVD. This may be because the DVD is encrypted and a DVD decryption library
is not installed.

Running it from the command line I get:

$ parole

(parole:4859): Gtk-CRITICAL **: 06:45:54.728: gtk_widget_set_visible: assertion 'GTK_IS_WIDGET (widget)' failed
libdvdread: Encrypted DVD support unavailable.************************************************
**                                            **
**  No css library available. See             **
**  /usr/share/doc/libdvdread4/README.css     **
**  for more information.                     **
**                                            **
************************************************

libdvdread: Encrypted DVD support unavailable.************************************************
**                                            **
**  No css library available. See             **
**  /usr/share/doc/libdvdread4/README.css     **
**  for more information.                     **
**                                            **
************************************************

libdvdnav: DVD Title: UNTOLD_HISTORY_DISC_2
libdvdnav: DVD Serial Number: 44274DB8
libdvdnav: DVD Title (Alternative): UNTOLD_HISTORY_DISC_2
libdvdnav: DVD disk reports itself with Region mask 0x00fe0000. Regions: 01

(parole:4859): parole-gst-WARNING **: 06:46:06.562: Failed to query element position: chapter

(parole:4859): parole-gst-WARNING **: 06:46:07.572: Failed to query element position: chapter

What library do I need to install? My /etc/apt/sources.list contains:
# deb cdrom:[Devuan GNU/Linux 4.0 chimaera amd64 - desktop 20211012]/ chimaera contrib main non-free

# deb cdrom:[Devuan GNU/Linux 4.0 chimaera amd64 - desktop 20211012]/ chimaera contrib main non-free

deb http://deb.devuan.org/merged chimaera main non-free contrib
deb-src http://deb.devuan.org/merged chimaera main non-free contrib

deb http://pkgmaster.devuan.org/merged chimaera-security main contrib non-free
deb-src http://pkgmaster.devuan.org/merged chimaera-security main contrib non-free

# chimaera-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.devuan.org/merged chimaera-updates main contrib non-free
deb-src http://deb.devuan.org/merged chimaera-updates main contrib non-free

What am I missing here? In all other aspects Devuan, with the Xfce desktop, runs great.

--
Kind regards,
Jonathan