Keydemon VideoGhost DVI User manual

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

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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

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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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Copyright © 2018 Keydemon
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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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Copyright © 2018 Keydemon
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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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Copyright © 2018 Keydemon
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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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Copyright © 2018 Keydemon
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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.