Each Bluecherry hardware compression card has a composite output for video, also know as a display device.  You can access the display device by using /dev/video0 with mplayer.

We support several 'extended' layouts for this device device.  

Starting in 2.4.0 of the driver there is a sample utility for letting you use the video (composite) output.  

You can download this from Github (https://raw.github.com/bluecherrydvr/solo6x10/master/utils/bluecherry-display.c)

You can compile this by running:

gcc -o bluecherry-display bluecherry-display.c

Running bluecherry-display requires root (or sudo) access, or that you belong to the 'video' group.  Below are sample commands for using this program to change inputs.  

Note:  You will need to run this after each system reboot, as the driver resets the display back to the first channel. 

Bluecherry 4 port MPEG-4|H.264 cards (BC-04120A / BC-H04120A)

Quad view (All ports) - "Multi 4UP"

./bluecherry-display /dev/video0 4

Bluecherry 8 port MPEG-4|H.264 cards (BC-08240A / BC-H08240A)

Quad view (Ports 1-4) - "Multi 4UP-1"

./bluecherry-display /dev/video0 4 

Quad view (Ports  5-8) - "Multi 4UP-2"

./bluecherry-display /dev/video0 5  

Bluecherry 16 port MPEG-4|H.264 cards (BC-16480A / BC-H16480A)

Quad View (Ports 1-4) - "Multi 4UP-1"

./bluecherry-display /dev/video0 16

Quad View (Ports 5-8) - "Multi 4UP-2"

./bluecherry-display /dev/video0 17

Quad View (Ports 9-13) - "Multi 4UP-3"

./bluecherry-display /dev/video0 18

Quad View (Ports 13-16) - "Multi 4UP-4"

./bluecherry-display /dev/video0 19

16 channel view (All 16 ports)

./bluecherry-display /dev/video0 20