Keydemon VideoGhost DVI User manual

VideoGhost
Copyright © 2018 Keydemon
1
User’s Guide
VideoGhost
DVI, HDMI, VGA
Check http://www.keydemon.com/ for the latest version of this document.

VideoGhost
Copyright © 2018 Keydemon
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Table of contents
Table of contents.................................................................................................................................2
Introduction...........................................................................................................................................3
About the product ...........................................................................................................................3
Features ..............................................................................................................................................3
Requirements....................................................................................................................................3
Quick Start.............................................................................................................................................4
Recording screenshots ......................................................................................................................5
Viewing recorded data ......................................................................................................................7
Configuration options ........................................................................................................................9
Clock configuration...........................................................................................................................12
Specifications......................................................................................................................................14
egal disclaimer .................................................................................................................................16

VideoGhost
Copyright © 2018 Keydemon
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Introduction
About the product
The VideoGhost is an intelligent hardware frame-grabber, compatible with DVI, HDMI, and
VGA signal sources such as computers and laptops. It features a built-in JPEG
compressor, and a huge 4 GB internal flash disk. Frames captured from the DVI, HDMI, or
VGA bus will be compressed and stored to the built-in Flash Drive. The VideoGhost may be
switched to Flash Drive mode at any time, and will pop-up as a removable disk, containing
captured screenshots as JPEG files. The device is 100% stealthy and does not influence the
operation of the computer, laptop, etc. No drivers or software are required, no configuration
necessary, works out of the box!
Features
• Compatible with all DVI, VGA, and HDMI devices
• Supports resolutions up to Full-HD (1920 x 1080) and WUXGA (1920 x 1200)
• Works with computers and external laptop monitors
• No power supply necessary (power is drawn from the USB port)
• Built-in JPEG encoder
• 4 Gigabytes of internal memory in all versions
• Built-in time-stamping module with battery (7 years lifetime guaranteed!)
• No software or drivers required, Windows, Linux, and Mac compatible
• Ultra compact and discrete, looks like a mini-extension cable
• Transparent to computer operation, undetectable for security scanners
• Several color options available: white, black, gray, blue
Requirements
• Compatible DVI / HDMI / VGA video signal source (no HDCP encryption)
• Standard resolution up to 1920 x 1200 and bandwidth up to 160MHz
• Computer with standard USB 1.1 or 2.0 port
• Operating system with USB Mass-Storage device support
• Optionally MS Windows XP/Vista/7/8 (only for running KL Tools)

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Quick Start
This section contains concise information on basic video-logger handling. If you need detailed
instructions, please refer to sections Recording screenshots and Viewing recorded data.
To record snapshots, connect the VideoGhost to graphics card output or the digital TV
output.
DVI version
HDMI version
VGA version
Then, connect the output device (TV or monitor) to the other end of the VideoGhost. Finally,
connect the USB connector to a free USB port. Do not use the supplied USB key.
DVI version
HDMI version
VGA version
Recording will start automatically on power-up.

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To view recorded snapshots, connect the USB cable of the VideoGhost to a free USB port
using the supplied USB Key.
The video-logger will pop up as a removable disk, containing the captured screenshots as
JPEG files (just like a digital camera). Browse the disk using standard image-viewing
software.
Recording screenshots
Recording mode is the default mode of operation for the VideoGhost. In record mode, the
device will silently monitor the DVI, HDMI, or VGA video signal and record a screenshot every
few seconds. The screenshots will be stored as JPEG files on the internal Flash Drive.
Installation of the video-logger in record mode is quick and easy, no software or drivers are
required. Connect the VideoGhost to the source of the video signal, such as the output of the
graphics card, or the TV output.

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DVI version
HDMI version
VGA
version
Then, connect the output device (TV or monitor) to the other end of the VideoGhost.
DVI version
HDMI version
VGA version
Finally, connect the USB connector to a free USB port. Do not use the supplied USB key.
Recording will start automatically on power-up.

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DVI version
HDMI version
VGA version
Note: The USB connection is used for powering the device only. If no USB port is available, a
+5V DC USB power supply may be used instead.
Viewing recorded data
Once screenshots have been recorded to the internal Flash Drive, they may be viewed on
any computer, laptop, or TV with USB Mass Storage support. The procedure is very similar to
restoring images from a digital camera.
Use the supplied USB Key to connect the VideoGhost’s USB output to a free USB port. The
device may stay connected to the video source and TV/monitor, however this is not
necessary.
After a few seconds, the hardware video-logger will automatically get detected as a Mass
Storage Device. The operating system will use the standard built-in mass storage driver (MS
Windows 7 in the following examples).

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Note: During the first switch to Flash Drive mode, the operating system can ask for drivers. In
such case choose automatic driver installation (usually default option).
The Flash Drive will contain the captured screenshots as JPEG files, grouped in folders
named 001, 002, etc. Depending on the device configuration, the images may have burned-in
time- and date-stamps. Use any image-viewing software to browse the JPEG files, such as
the default Windows Photo Viewer.
Switching back to record mode can be achieved by a safe software removal of the flash disk.
Use the systems standard disk removal procedure. For MS Windows, left-click on the Safe
Removal icon in the system tray and select the appropriate drive. Then reconnect the
VideoGhost to the USB port, however without the supplied USB Key.
To get the most out of the VideoGhost, install the supplied application KL Tools. Go to section
Using KL Tools to find out more.

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Copyright © 2018 Keydemon
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Configuration options
The VideoGhost may be configured through the file CONFIG.TXT, placed in the Flash Drive
root folder. Use any text editor to prepare such a configuration file, containing the following
text:
Interval=300
Resize=50
Timestamping=Image
Copy this file to the root folder in Flash Drive mode. The new configuration will be loaded on
next power-up.
The following list presents the most common configuration options. All variable and value
strings are case insensitive.
Interval sets number of seconds between successive screenshots. Please note that
compressing and saving an image takes several seconds (depending on the image size and
quality), so this may become the limiting factor for low values of Interval. Default value is 300.
Resize sets the resizing factor for storing screenshots. Allowed values are No (no resizing),
Auto (automatic resizing factor based on image size), 75 (75%), 67 (67%), 50 (50%), 33
(33%), and 25 (25%). Default value is No.
Timestamping configures the built-in time- and date-stamping module. Allowed values are
Yes (timestamping active, but limited to updating the modification time and date of JPEG
files), Image (timestamps burned into JPEG image content), and No (timestamping disabled).
Default is Image.
Quality sets the quality factor for JPEG compression. Allowed values are from 1(lowest
quality, smallest file size) to 10 (highest quality, largest file size). Please note that setting a

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high quality value will result in longer compression times and increased disk space usage.
Default value is 7.
DisableLogging allows to disable screenshot logging. Allowed values are Yes (logging
disabled) and No (logging enabled). Default value is No.
Encryption enables flash disk encrypting. Encryption will ensure full confidentiality of the
stored data, even if the device is physically tampered with. Allowed values are Yes
(encryption enabled) and No (encryption disabled). Default is No.
Important: toggling the encryption setting will format the entire flash disk. All data will be lost,
including the configuration file!
An example configuration file contents is shown below:
Interval=200
Resize=25
Timestamping=Yes
Quality=5
A full list of available parameters with descriptions is available below.
Basic parameter list
Parameter
Values
Example
Description
Interval Screenshot interval in
seconds (default 300) Interval=200 Number of seconds between successive screenshots.
Resize
No (default)
Auto
75
67
50
33
25
Resize=50
Resizing factor for storing screenshots
in percent. Auto will choose an optimal
resizing factor based on the image
size.
Timestamping
Yes
Image (default)
No
Timestamping=Yes Time-stamping disable flag.
Quality JPEG compression
quality (default 7) Quality=5 Quality factor for JPEG compression from 1 to 10.
DisableLogging Yes
No (default) DisableLogging=Yes Screenshot logging disable flag.

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Advanced parameter list (use only when you know what you’re doing!)
Parameter
Values
Example
Description
Brightness Brightness factor
(default 0) Brightness=50 The factor to add to the standard image brightness from 0 to 150
ForceWidth Image width in pixels
(defaults to resolution X) ForceWidth=1024
If this parameter is present, it will
force the width of the captured image
regardless of the current resolution.
ForceHeight Image height in pixels
(defaults to resolution Y) ForceWidth=768
If this parameter is present, it will
force the height of the captured image
regardless of the current resolution.
TopMargin Top margin in pixels
(default 0 or table value) TopMargin=10
If this parameter is present, it will cut
out the top part of the captured
image. It is used primarily in the VGA
version, for filtering out the useful part
of the signal.
LeftMargin Left margin in pixels
(default 0 or table value) LeftMargin=5
If this parameter is present, it will cut
out the left part of the captured image.
It is used primarily in the VGA
version, for filtering out the useful part
of the signal.
RightFrame Right frame in pixels
(default 0 or table value) RightFrame=20
If this parameter is present, it will add
a frame on the right side of the
captured image. It is used primarily in
the VGA version, for filtering out the
useful part of the signal.
BottomFrame Bottom frame in pixels
(default 0 or table value) BottomFrame=15
If this parameter is present, it will add
a frame at the bottom of the captured
image. It is used primarily in the VGA
version, for filtering out the useful part
of the signal.
ShiftX Horizontal shift value
(default 0 or table value) ShiftX=-10
If this parameter is present, it will shift
the image horizontally within the
bounds given by LeftMargin and
RightFrame. It is used primarily in the
VGA version, for filtering out the
useful part of the signal.
ShiftY Vertical shift value
(default 0 or table value) ShiftY=-5
If this parameter is present, it will shift
the image vertically within the bounds
given by TopMargin and
BottomFrame. It is used primarily in
the VGA version, for filtering out the
useful part of the signal.

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Copyright © 2018 Keydemon
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Clock configuration
It is necessary to configure the built-in clock module for getting correct date and time-stamps.
To do this, a text file named TIME.TXT should be prepared with the following format:
Year=2010
Month=4
ay=1
Hour=12
Minute=34
Second=56
Format=PM
The fields should contain the current time and date. The field Format allows distinguishing
between A.M., P.M., and 24-hour time (use the value AM, PM, or 24). After the file has been
prepared, switch to Flash Drive mode and copy the file TIME.TXT to the root folder of the
flash disk. The supplied USB Key has to be used to switch to Flash Drive mode.
After copying the file, safely remove the Flash Drive and disconnect the USB Key. The new
clock configuration will be loaded during the next power-up.
The clock configuration file must be named TIME.TXT and must be placed in the root folder.
Variable and value strings are case insensitive, however they must match the options listed
below.

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•Year sets the clock year value. Valid range is from 2000 to 2099.
•Month sets the clock month value. Valid range is from 1 (January) to 12 (December).
•Day sets the clock day value. Valid range is from 1 to 31. If the specified day exceeds
the maximum number of days in the specified month, the next valid day value will be
chosen.
•Hour sets the clock hour value. Valid range is from 1 to 12 for 12-hour time
(A.M./P.M.), and 0 to 23 for 24-hour time.
•Minute sets the clock minute value. Valid range is from 0 to 59.
•Second sets the clock second value. Valid range is from 0 to 59.
•Format sets the time format. Valid values are AM, PM, and 24. If AM is chosen, the 12-
hour format is selected and the specified hour is treated as before noon. If PM is
chosen, the 12-hour format is selected and the specified hour is treated as after noon.
If 24 is chosen, the 24-hour format is selected and the specified hour is treated as 24-
hour format.
Sample TIME.TXT for 12-hour time:
Year=2010
Month=10
ay=25
Hour=5
Minute=51
Second=43
Format=PM
Sample TIME.TXT for 24-hour time:
Year=2010
Month=10
ay=25
Hour=17
Minute=51
Second=43
Format=24

VideoGhost
Copyright © 2018 Keydemon
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Specifications
VideoGhost DVI
VideoGhost HDMI
VideoGhost VGA
Power supply
4.5 V – 5.5 V DC 4.5 V – 5.5 V DC 4.5 V – 5.5 V DC
Max. power
consumption
250 mA (1.3 W) 250 mA (1.3 W) 250 mA (1.3 W)
Memory capacity
4 GB 4 GB 4 GB
Data retention
100 years 100 years 100 years
Interface support
DVI-compatible
video source,
USB 1.1 or 2.0 with
MSD support
HDMI-compatible
video source,
USB 1.1 or 2.0 with
MSD support
VGA-compatible
video source,
USB 1.1 or 2.0 with
MSD support
Max. video
bandwidth
160 MHz 160 MHz 160 MHz
Max. video resolution
1920 x 1200 1920 x 1200 1920 x 1200
1
Typical JPEG encoding time in seconds
2
:
Frame
size
Quality = 3
Quality = 5
Quality = 7
50%
Resize
Auto
Resize
No
Resize
50%
Resize
Auto
Resize
No
Resize
50%
Resize
Auto
Resize
No
Resize
640x480
1 1 1 1 1 1 1 1 2
800x600
2 3 3 2 3 3 2 3 3
1024x768
2 5 5 2 5 5 2 5 5
1280x720
3 5 5 2 5 5 2 5 5
1440x900
4 5 7 4 6 8 4 6 8
1280x1024
4 5 7 4 5 7 4 5 7
1680x1050
5 6 9 5 6 9 5 6 9
1600x1200
5 7 10 5 7 10 5 7 10
1920x1080
5 7 11 5 7 11 5 7 12
1
Limited to standard resolution and refresh rate combinations.
2
Encoding times may vary depending on image contents.

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The VGA version supports the most common resolution and refresh rate combinations:
50 Hz 56 Hz 60 Hz 70 Hz 72 Hz 75 Hz 85 Hz 100 Hz 120 Hz
640x480
X X X X X
800x600
X X X X X X
1024x768
X X X X X X
1152x864
X X X X X
1280x720
X X X
1280x768
X X
1
280x800
X
1280x960
X X X X
1280x1024
X X X X
1360x768
X X X
1440x900
X X
1600x900
X X X
1600x1200
X X X X
1680x1050
X X X
1920x1080
X X
1920x1200
X X
All Keydemon products come with 1 year warranty against manufacturer defects. Defect
products must be shipped by the customer. All warranty repairs and delivery to the customer
will be paid by the manufacturer.

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Copyright © 2018 Keydemon
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Legal disclaimer
Keydemon does not take responsibility for any damage, harm or legal actions caused by
misuse of its products. The user should follow the guidelines contained in this document,
otherwise no liability will be assumed. It is the user's responsibility to obey all effective laws in
his/her country, which may prohibit usage of Keydemon products. Please also consider, that
not knowing the law does not allow to not obeying it. A good example is the U.S. Department
of Justice Letter on Keystroke Monitoring and Login Banners, according to which a clear
notice should be displayed, warning that user keystrokes may be logged. Please check with
your legal representative for logging requirements in your country.
For more information on Keydemon products,
visit our website:
http://www.keydemon.com/
European Office
Electroware
Sw. Elzbiety 10
PL 43-100 Tychy
Poland
http://www.keydemon.com/
[email protected]


 RoHS
Copyright © 2018. All rights reserved.
You should not use this device to intercept
data you are not authorized to possess,
especially passwords, banking data,
confidential correspondence etc. Most
countries recognize this as a crime. Please
consult a legal representative for logging
requirements in your country.