Im trying to install zoneminder on ubuntu 16.04 server and I get this unmet dependencies error. How can I correct this?
root@tpadzm:/home/joey# apt-get install zoneminder
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
zoneminder : Depends: libavcodec57 (>= 7:3.4.2) but it is not installable or
libavcodec-extra57 (>= 7:3.4.2) but it is not installable
Depends: libavformat57 (>= 7:3.4.2) but it is not installable
Depends: libavresample3 (>= 7:3.4.2) but it is not installable
Depends: libavutil55 (>= 7:3.4.2) but it is not installable
Depends: libmp4v2-2 but it is not installable
Depends: libswscale4 (>= 7:3.4.2) but it is not installable
Depends: libvlc5 (>= 1.1.1) but it is not installable
Depends: libx264-152 but it is not installable
Depends: libjs-mootools (>= 1.4.5~debian1) but it is not
installable
Depends: ffmpeg but it is not installable or
libav-tools but it is not installable
Depends: libdbd-mysql-perl but it is not installable
Depends: libphp-serialization-perl but it is not installable
Depends: libnet-sftp-foreign-perl but it is not installable
Depends: libdevice-serialport-perl but it is not installable
Depends: libimage-info-perl but it is not installable
Depends: libjson-any-perl but it is not installable
Depends: libsys-mmap-perl but it is not installable
Depends: liburi-encode-perl but it is not installable
Depends: libclass-std-fast-perl but it is not installable
Depends: libsoap-wsdl-perl but it is not installable
Depends: libio-socket-multicast-perl but it is not installable
Depends: libsys-cpu-perl but it is not installable
Depends: libsys-meminfo-perl but it is not installable
Depends: libdata-uuid-perl but it is not installable
Depends: libnumber-bytes-human-perl but it is not installable
Depends: libfile-slurp-perl but it is not installable
Depends: php5-apcu but it is not installable or
php-apcu but it is not installable
Depends: php-apc but it is not installable or
php-apcu-bc but it is not installable
Recommends: zoneminder-doc (>= 1.31.45~20180731103016-bionic) but
it is not going to be installed
Recommends: ffmpeg but it is not installable
E: Unable to correct problems, you have held broken packages.
root@tpadzm:/home/joey# apt install libavcodec57
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libavcodec57 is not available, but is referred to by another
package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'libavcodec57' has no installation candidate
root@tpadzm:/home/joey# cat /etc/apt/sources.list
deb http://archive.ubuntu.com/ubuntu bionic main
deb http://archive.ubuntu.com/ubuntu bionic-security main
deb http://archive.ubuntu.com/ubuntu bionic-updates main
root@tpadzm:/home/joey#
