PRG Mbox Designer Manual 3.8 - Manual (Page 209)

MBOX ® MEDIA SERVER USER MANUAL 201
Multihead Setup
First, connect the multihead adapter to the computer and confirm that the computer sees the adapter and that you
are able to output the desired resolution from the desktop. If the desktop can't run at the desired resolution, then
Mbox can't either. (Some devices may need additional software to tell the computer what to do or to reprogram the
EDID in the device.)
Next, determine the resolution that needs to be sent to the multihead adapter. In the case of a dualhead adapter doing
a double 1920x1080 output, that will be 3840x1080. In Mbox, go to the Setup tab and select the "Custom" fullscreen
mode and enter 3840 in the width field and 1080 in the height field. Make sure the frequency is set to something that
the multihead adapter supports.
If all the settings are correct, Mbox will output the desired resolution. In Window mode, the window will now be the
same aspect ratio as the Fullscreen output (32:9 in the case of 3840x1080). Unless content has been specifically
created at the fullscreen resolution it will have to be scaled up to fill the entire output.
In Mbox Remote, on the Projection Editor window, select the Identity that matches the output of the Mbox server,
press the Configure button and select the Dual Head option and add an overlap (in screen pixels).
The Projection Editor window will now show the
settings for Output 1 of 2 (the left side) or
Output 2 of 2 (the right side) depending on the
selection in the pop-up. Note that the size of
each output is the same and that both share the
same sized Context and Sample Width and
Height. But note that each output has a unique
Origin X. This is so that the image is located
properly, both for the left and right halves of the
image, but also for the overlap between the two
outputs. Also, if you entered an overlap, a
vignette will have been created with an amount
on both halves equal to the overlap amount.