These instructions are for Just Add Power 3G devices on the newest available firmware, B2.x.x. For older firmware options, see the A6.x.x Standard Video Wall or B1.x.x Video Wall article.
A Standard Video Wall is made up of multiple displays that each have their own Receiver. The displays must be the same size and orientation and must be aligned edge-to-edge in a seamless rectangle. This setup allows a Source to be viewed as a single-screen and as part of a video wall at the same time. It also allows a video wall to dynamically change size as demonstrated in this video.
A Standard Video Wall is one in which all displays are the same size and orientation, and 100% of the video is shown across the displays in the video wall.
Wall sizes up to 16 rows and 16 columns are supported through the web interface. Larger wall sizes are supported; contact support for more information.
If the displays are of different size or orientation, or are not edge-to-edge aligned, it may be preferable to setup a Mosaic Video Wall instead.
A Standard Video Wall is created by scaling the input content to the wall size. If the input content does not share the same aspect ratio as the wall, some adjustments may be needed.
Standard HD content (720p, 1080p, 2160p) has an aspect ratio - the relative size of the width compared to the height - of 16:9.
16:9 aspect ratio calculates to 1.778 (16/9); the content is 1.778 times wider than it is tall.
If the aspect ratio of a video wall is higher than 1.778, the picture will distort to look fatter than usual.
If the aspect ratio of a video wall is lower than 1.778, the picture will distort to look thinner than usual.
The closer the aspect ratio is to 1.778, the less distorted the picture will look.
A standard video wall with the same number of rows and columns will keep the aspect ratio of the input content.
When building a video wall, the bezel - or frame - of the display may prevent the viewable portion of adjacent screens to touch. A large enough gap between screens will cause video to be misaligned or appear to show duplicated content.
Compensating for a gap between screens is an individual decision based on the primary form of content to be shown on the video wall:
Just Add Power video walls can compensate for gaps between screens due to the displays' bezel. To ignore the gap, leave all screen measurements at 1. To compensate for the gap and create a smoother screen transition, accurately measure the dimensions of the screen when instructed to do so in the Setup section.
To change the layout of a Standard Video Wall live, communicate directly to the Just Add Power Receiver connected to the display. To modify an entire wall simultaneously, connect to multiple Receivers and send the commands simultaneously. The rotation, size, position, mirror, bezel, shift, and scale settings can all be modified.
There are two methods for modifying a Standard Video Wall:
All commands are case-sensitive
vw [options]
-l
Set the size and position of the overall video to display. Uses: Total Rows, Total Columns, Row Position, Column Position. If displays are rotated, rotation must be done first as this takes the rotation value into account for positioning.
-r
Set the clockwise rotation of the video. Uses: increments of 90 degrees
-m
Set horizontal mirroring. Uses: on or off.
-b
Set Bezel measurements. Uses: Outside Width, Outside Height, Video Width, Video Height.
Set size & position of the overall video to display. Uses: Total Rows, Total Columns, Row Position, Column Position. If displays are rotated, rotation must be done first.
vw -l $TR,$TC,$RP,$CP
$TR = total rows in the wall. Integer 1 or greater.
$TC = total columns in the wall. Integer 1 or greater.
$RP = row position of this Receiver. Integer 1 or greater. Less than or equal to $TR
$CP = column position of this Receiver. Integer 1 or greater. Less than or equal to $TC
To set a Receiver into a 2-row, 2-column video wall as row position 1, send vw -l 2,2,1,1
To set a Receiver into a 4-row, 5-column video wall as row position 2, column position 3, send vw -l 4,5,2,3
To return a Receiver to single-screen mode, send vw -l 1,1,1,1
Set the clockwise rotation of the video. Uses: increments of 90 degrees
vw -r $ROT
$ROT = Clockwise video rotation angle. 0, 90, 180, 270.
To rotate the video 90 degrees clockwise, send vw -r 90
To rotate the video 180 degrees (upside-down), send vw -r 180
Set horizontal mirroring. Uses: on or off.
vw -m $M
$M = y for mirror. n for standard.
To enable horizontal mirror, send vw -m y
To disable horizontal mirror, send vw -m n
Set Bezel measurements. Uses: Outside Width, Outside Height, Video Width, Video Height.
vw -b ow:$OW,oh:$OH,vw:$VW,vh:$VH
$OW = Outside Width measurement. Integer less than 65000.
$OH = Outside Height measurement. Integer less than 65000.
$VW = Video Width measurement. Integer less than 65000.
$VH = Video Height measurement. Integer less than 65000.
To set Bezel measurements to OW:4413, OH:2550, VW:4300, VH:2425, send vw -b ow:4413,oh:2550,vw:4300,vh:2425