3G Standard Video Wall Manual - Just Add Power

© 2019 Just Add Power – All rights reserved – Unauthorized use or disclosure prohibited – Last updated Jan-19

3G

STANDARD VIDEO WALL

MANUAL

Revised 2019-01-01

3G Standard Video Wall Manual –

ii Just Add Power – Last updated Jan-19

Table of Contents Introduction ............................................................................................................................... 1

Requirements .................................................................................................................................................. 2

Wall Sizes ......................................................................................................................................................... 2

Content Scaling .......................................................................................................................... 3

16:9 Aspect Ratio ............................................................................................................................................. 3

Other Aspect Ratios ......................................................................................................................................... 4

Rotated Displays .............................................................................................................................................. 5

Setup ......................................................................................................................................... 6

Programming ............................................................................................................................. 9

Telnet ............................................................................................................................................................. 10 Command Format ................................................................................................................................................. 10 Set Rotation ........................................................................................................................................................... 11 Set Size & Position ................................................................................................................................................. 12 Set Horizontal Mirror ............................................................................................................................................ 13 Set Bezel Measurements ....................................................................................................................................... 14

justAPI ............................................................................................................................................................ 15

3G Standard Video Wall Manual - Just Add Power

© 2019 Just Add Power – All rights reserved – Unauthorized use or disclosure prohibited – Last updated Jan-19

Introduction Just Add Power Ultra HD over IP 3G Receivers have built-in video wall scaling. In a Just Add Power distributed system, a source can be viewed as a single screen and video wall at the same time. A Standard Video Wall is one in which all Displays are the same size and orientation, and 100% of the video is shown across all displays.

Once a Standard Video Wall has been setup, the layout can be changed to any other size inside the Standard Video Wall.

3x3 Wall 2x2 with 5 singles 9 singles

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Requirements • One Receiver per Display in the video wall • A computer connected to the same network as the switch running Just Add Power devices • WebUI access to the Just Add Power devices

o Set a Static Route on the router to allow Layer 3 communication o Alternatively, set the computer’s IP details manually so the Default Gateway is equal to the IP Address of

the managed Ethernet switch running the Just Add Power system

Static Route to Just Add Power devices at 10.0.0.0 – IP of switch is 192.168.1.4

Wall Sizes • Wall sizes up to 16 rows and 16 columns are possible through the web interface. If a wall larger than 16x16 is

needed, contact support@justaddpower.com for assistance.

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Content Scaling Just Add Power Receivers create a video wall by scaling the video content to a size that matches the full wall. This means that it does NOT take into account the aspect ratio or native resolution of the picture that it is sending.

16:9 Aspect Ratio Most HD content has an Aspect Ratio – the relative size of the Screen Width compared to the Screen Height – of 16:9. 720p, 1080p, and 2160p resolutions all have 16:9 Aspect Ratio.

• 1280 x 720 = (16 : 9) x 80 • 1920 x 1080 = (16:9) x 120 • 3840 x 2160 = (16:9) x 240

16:9 Aspect Ratio converts to 1.778 in decimal. This means that the content is 1.778 times wider than it is tall. If the decimal value of an Aspect Ratio is higher than 1.778, the picture will distort to look fatter than usual. If the decimal value of an Aspect Ratio is lower than 1.778, the picture will distort to look thinner than usual. The closer the decimal value is to 1.778, the less distorted the picture will look. When creating a Video Wall with the same number of rows and columns, the overall Video Wall will have the same Aspect Ratio as a single display. The content will have the same proportions, so no additional picture scaling is needed to ensure a quality picture. 1x1 2x2 3x3 16:9 32:18 48:27 1.778 1.778 1.778

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Other Aspect Ratios When creating a Video Wall with different number of Rows and Columns, or creating a Video Wall of Portrait-oriented displays, the content will be stretched by the Video Wall process. 16:9 content will not appear normal. Landscape 1x1 1x2 2x1 16:9 32:9 8:9 1.778 3.556 0.889 Portrait 1x1 1x2 1x3 9:16 18:16 27:16 0.563 1.125 1.688 Correcting for Distortion To maintain 16:9 Aspect Ratio on other Aspect Ratio layouts, content must be specially designed before being sent to a Transmitter. Content that has been compressed horizontally on a 16:9 Display will scale properly when shown at 32:9 across a 1x2 wall.

1x1 1x2

– 3G Standard Video Wall Manual

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Rotated Displays Just Add Power 3G Ultra HD over IP devices add the ability to rotate the video output clockwise at 90, 180, or 270 degrees. Paired with video wall, this gives the ability to make portrait and flipped video walls. Portrait Wall All Displays in the wall are rotated 90-degrees, either clockwise or counter-clockwise

1x1 1x3 Inverted-Top-Row Wall Only possible for video walls with 2 rows. The top row of Displays in the wall are rotated 180-degrees and the bottom row of Displays are not rotated. This layout works well when a Display has a top bezel that is smaller than the bottom bezel.

2x2

No Rotation – 0⁰ 90⁰ clockwise Rotation 180⁰ clockwise Rotation 270⁰ clockwise Rotation

R1 – C1 R1 – C2 R1 – C3

R1 – C1 R1 – C2

R2 – C1 R2 – C2

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Setup 1. Configure the switch and all Just Add Power devices. 2. Set the screens in the video wall to watch the same source.

3. Access the web interface of one of the Receivers in the video wall. All configuration is done through a single webUI.

4. Select the Video Wall option.

5. Set the Number of Rows to equal the vertical count of Displays.

6. Set the Number of Columns to equal the horizontal count of Displays.

7. Set the Row Position to 1.

8. Set the Column Position to 1.

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9. If the Display has no Bezel, or if the Bezel should be ignored, set all 4 values to 1.

10. To hide video behind the frame of the Displays, measure the width

and height of the Display frame, and the width and height of the viewable portion of the Display. Any unit of measurement may be used.

11. Convert the measurements to decimal, and then convert the decimals

to whole numbers by multiplying by a factor of 10. The webUI will only accept whole numbers.

Example: OW: 44.13 OH: 25.5 VW: 43 VH: 24.25 Convert to: OW: 4413 OH: 2550 VW: 4300 VH: 2425

12. Enter the converted values in Outside Width, Outside Height, Video Width, and Video Height.

Bezel Compensation No Bezel Compensation Video “hides” behind Bezel Video “jumps” across Bezel

13. Set the Clockwise Rotate to the rotation angle for the video on the Display: 0, 90, 180, or 270.

14. In the Apply To dropdown, select the Receiver that is in the top-left

corner of the wall. This corresponds to Row Position 1 and Column Position 1.

15. If unsure which Receiver is attached to the top-left Display, click the OSD On button. Each display will show text with the MAC address and IP address of the Receiver.

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16. Click Apply. The Display will change to show the selected portion of the video wall.

17. Setup the next Display in the wall by adjusting the Row

Position, Column Position, and Clockwise Rotate values, then select that Receiver from the Apply To dropdown and click Apply. The Display will change to show the selected portion of the video wall.

18. Repeat Step 17 for each Receiver in the video wall.

19. Congratulations! Just Add Power Receivers are setup for a Standard Video Wall.

20. If the video does not look aligned and synchronized, check these settings outside the Just Add Power devices: • Remove any zoom or scaling function that the Display may be performing. Set the Display to show 100%

of the video. • Set the source to output a Progressive video format – 720p, 1080p, 2160p. Interlaced video formats

(1080i) are incompatible with Video Walls. • Re-measure the Displays to confirm that Bezel Info is accurate.

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Programming 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. There are two methods for modifying a Standard Video Wall:

1. Telnet 2. justAPI – a RESTful API

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Telnet

Command Format Alter the rotation, size/position, mirror, bezel, shift, and scale settings of a Receiver. All commands are case-sensitive. vw [options] Options -r Set the clockwise rotation of the video. Uses: increments of 90 degrees -l 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 as this takes the rotation value into account for positioning. -m Set horizontal mirroring. Uses: On or off. -b Set Bezel measurements. Uses: Outside Width, Outside Height, Video Width, Video Height. -z Set zoom level beyond size & position. Uses: Horizontal Scale, Vertical Scale. -s Shifts the picture. Uses: Horizontal Pixel Shift, Vertical Pixel Shift.

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Set Rotation Set the clockwise rotation of the video. Uses: increments of 90 degrees

vw –r $ROT

Variables $ROT – Clockwise video rotation angle. 0, 90, 180, 270

Examples Rotate video 90 degrees clockwise (display should be rotated 90 degrees counter-clockwise)

vw –r 90 Rotate video 180 degrees clockwise (display should be upside-down)

vw –r 180

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Set Size & Position 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 as this takes the rotation value into account for positioning.

vw –l $TR,$TC,$RP,$CP

Variables $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.

Examples Row position 1, column position 1 of a 2-row, 2-column wall

vw –l 2,2,1,1 4-row, 5-column wall with the Receiver in row 2, column 3

vw –l 4,5,2,3

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Set Horizontal Mirror Set horizontal mirroring. Uses: On or off.

vw –m $M

Variables $M – y for mirror. n for standard.

Examples Enable horizontal mirror

vw –m y Disable horizontal mirror

vw –m n

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Set Bezel Measurements Set Bezel measurements. Uses: Outside Width, Outside Height, Video Width, Video Height.

vw –b ow:$OW,oh:$OH,vw:$VW,vh:$VH

Variables $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.

Examples Set Bezel measurements to OW: 4413, OH: 2550, VW: 4300, VH: 2425

vw –b ow:4413,oh:2550,vw:4300,vh:2425

– 3G Standard Video Wall Manual

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justAPI A RESTful API

Full information on justAPI is available at https://justaddpower.docs.stoplight.io/