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Creative Video Wall
Processing
Paul Streffon
Training Manager
tvONE
paul.streffon@tvone.com

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Course Description
• We’ll explore how to design and create video
walls for various applications with
consideration on wall sizes, types of displays
and combining different sizes of displays. The
challenges of creative video walls, such as
design using a variety of digital and analog
signals and exploring adjustment for screen
size, resolution and angle will also be
discussed, in addition, various examples will
be given and the process to consider when
building video walls.

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Agenda
• Terminology
• Types of walls
• Examples of installations
• Method for planning video walls
• CORIOmaster tour and examples

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Single Screen - Multiple
Windows

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Multiple Screens – Single
Image

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Multiple Screens – Multiple
Windows

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Some Terminology

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Screen Size
• The size of the physical display
• Bezel or Moulin
• Image size
Screen Size
Bezel Size

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Native Resolution
• The preferred display resolution settings of the
display
• EDID determined
• It is better if the display does not have to scale

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Window
• A container
• Input or source
• Border
• Size
• Place or position
• Rotation
• Aspect ratio
• Transition
• Etc.
Windows

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Mixer
• Combines two or more images
• Cross fade
• Picture in picture
X-over or
S-curve

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Scaler
• Up convert
• Down convert
• Cross convert
720x480
720x480
1920x1080
1920x1080

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Image Size / Position / Place
• Constrained or unconstrained
• Left to right
• Top to bottom
Top
Left
Width
Height

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Cropping
• Trims the edges from an image

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Shifting / Panning
• Moves the image within a crop

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Layers
• Background
• Foreground

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Key (Logo)
• Alpha
• Luminance
• Chroma

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Border
• Transparency
• Size
• Color
• Edge

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Video Wall

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Canvas

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Edge Blending
• Multiple projectors displaying a single
continuous image

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Edge Blending

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Presets
• A destination
• What the screen
will look like
• Size, position,
rotation, aspect,
and placement of
windows on the
screen
• Any attribute
setting of the
windows, such as
border color

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Transitions
• Cut
• Fade / Dissolve
• Wipe
• Horizontal
shrink/grow
• Vertical
shrink/grow
• Spin

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Timelines

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Time To Process

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Deployment Types

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Square

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Non-Square (not 16:9)
Viasat HQ - Denmark

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Non-Square
The CBS Atlanta (WGCL-TV) studio features a stunning city scape
video wall powered by CORIOmaster.

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Square & Non-Square
Together
CORIOmaster powers the KSL-TV Utah news studio with
video walls and a video belt.

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Video Columns
CNN use the CORIOmaster mini systems to feed video to their
creative video columns.

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Video Columns
Autodesk use CORIOmaster mini to creative video pillars.

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Mix Screen Orientations
Horizontal & Landscape displays for a window view at an
exhibition.

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Screen & Source Rotation
Technology Exposed Exhibition

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Mixed Screen Specifications
Netherlands AV Exhibition

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Scatter Walls
Technology Exposed Exhibition

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Scatter Walls

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Edge Blended

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Edge Blended

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Mixing Projectors & Displays
InfoComm Brazil
exhibition stand

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Mixing Projectors & Displays
The Cube, Queensland University of Technology

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Mixing Projectors & Displays

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LED Walls

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Building Blocks
• Destinations
• Physical outputs
• Sources
• Physical inputs
• Windows
• Virtual video maps
• Canvas
• The work area within the software

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Video Wall Processor Block
Input
Modules
4K (UHQ)
DVI-U*
HDBaseT*
3G-SDI*
HD-SDI*
*EHQ, HQ or PV
20
Backplane
Scalers
Allocation:
UHQ (4)
EHQ(2)
HQ(1)
PV(0)
Canvas
Design
Canvas 1
600 Megapixels
Canvas 2
600 Megapixels
Canvas 3
600 Megapixels
Canvas 4
600 Megapixels
Output
Modules
4K
DVI-U
HDBaseT
3G-SDI
Sources Displays

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Monitor Layout

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Video Sources

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Window Layouts

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LED Walls
• What makes an
LED work?

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LED Pixel Density

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LED Walls Block Configuration

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LED Total Pixel Count

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Original Video Content
• 1920x1080 pixels

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Desired LED Video Display
• 125x104 pixels

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Pixel Perfect Video Processing

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LED Output

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Let’s Call It UHD
• What is 4K
• Compare to 1080
• Dense Pixels
• Text Size
• How Close

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Greater Pixel Density
• Higher density of
pixels
• Smaller computer
text
• Can I see the
difference?

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Smaller Computer Text
• Higher density of
pixels
• Smaller computer
text
• Can I see the
difference?

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Can I See The Difference?
• What can I see normally?
• 20/20 or 6/6
• 1 minute of arc
• Viewing distance to pixel height - 3428:1
• Higher density of
pixels
• Smaller computer
text
• Can I see the
difference?

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How Close Are Your Viewers?
• Higher density of
pixels
• Smaller computer
text
• Can I see the
difference?

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0
5
10
15
20
25
20 40 60 80 100 120 140 160 180
DistanceinFeet
Screen Diagonal in Inches
Max Viewing Distance to See Pixels
1080 Distance UHQ Distance
Viewing Distance To Screen
• Higher density of
pixels
• Smaller computer
text
• Can I see the
difference?

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High Density LED Wall

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LED Pixels vs. Source Pixels

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LED to Source Aspect Ratios

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LED Ribbon Layout

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Good 4K Application

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Worksheet Review
• Weblink
• bit.ly/1MRliLH

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Questions?