Epiphan DVI2PCIe Duo User Manual
Epiphan Technical
Documentation
©2015
Epiphan Systems Inc.
All Rights Reserved
April 2015
DVI2PCIe Duo™
User Guide
www.epiphan.com
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Go to the Products page of the Epiphan website for more information about
DVI2PCIe Duo.
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Technical Support
Epiphan is staffed by a professional support team. If, after checking the FAQs
for your product on the Epiphan website and re-installing the Epiphan driver
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problem report to support@epiphan.com. To help us solve the problem
efficiently, include the following info:
• Your DVI2PCIe Duo serial number.
• Technical description of the signal source including resolution, refresh
rate, synchronization, type of hardware.
• Complete description of the problem you are experiencing.
Copyright © 2014 Epiphan Systems Inc. All Rights Reserved.
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DVI2PCIe Duo User Guide
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1 Table of Contents
1 Table of Contents ........................................................................................ 1
1. DVI2PCIe Duo Introduction .......................................................................... 4
1.1 What’s in the box ................................................................................... 4
2 Physical Attributes ...................................................................................... 6
2.1 System Hardware Features .................................................................... 6
2.2 Cables, Connectors and Adapters .......................................................... 8
2.2.1 VGA to DVI Cable ................................................................................... 8
2.2.2 DVI to DVI Cable ..................................................................................... 9
2.2.3 SDI to SDI Cable ...................................................................................... 9
2.2.4 HDMI to DVI Adapter ............................................................................. 9
2.2.5 DisplayPort Cable ................................................................................. 10
2.2.6 Mini DisplayPort Cable ......................................................................... 10
2.2.7 Thunderbolt Port Cable ........................................................................ 11
3 System Requirements ................................................................................ 11
4 Installing DVI2PCIe Duo ............................................................................. 12
4.1.1 To install a DVI2PCIe Duo Frame Grabber: .......................................... 12
5 Installation Steps for the Windows Video Capture Workstation ................ 13
5.1 Install the Windows Drivers and Epiphan Capture Tool ....................... 14
5.2 Upgrading to the Latest Windows Software Version ........................... 18
Finding Software Updates ............................................................................ 18
5.2.1 ................................................................................................................... 18
5.2.2 Firmware Upgrade ............................................................................... 18
5.3 Troubleshooting a Windows Installation ............................................. 21
6 Mac OS X Video Capture Workstation Installation ..................................... 22
6.1 To Install the Mac Drivers and Epiphan Capture Tool .......................... 22
6.2 To Start the Mac OS Capture Application............................................. 23
6.3 Upgrading to the Latest Mac OS X Software Version ........................... 23
6.4 Finding Software Updates .................................................................... 23
7 Linux Video Capture Workstation Software ............................................... 24
7.1 The Epiphan USB Device Driver ............................................................ 24
7.2 Video4Linux .......................................................................................... 25
7.3 The Epiphan Capture API ...................................................................... 25
7.4 V4L Custom Video Capture Applications .............................................. 25
8 Connecting DVI2PCIe Duo to a Video Source ............................................. 26
9 Windows Video Capture Application ......................................................... 26
9.1 Start the Windows Video Capture Application .................................... 27
9.2 Pausing, Copying, Saving, and Printing Images .................................... 28
9.2.1 To pause and resume image capture: .................................................. 28
9.2.2 To copy a snapshot of the current image: ........................................... 29
9.2.3 To save a snapshot of the current image as an image file: .................. 29
9.2.4 To print a snapshot of the current image: ........................................... 29
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9.2.5 To invert or reverse the colors of the image: ...................................... 30
9.3 Recording Captured Images ................................................................. 30
9.3.1 To record captured images as a series of image files .......................... 30
9.3.2 To record captured images as a video file: .......................................... 31
9.4 Menus ................................................................................................... 32
9.4.1 File Menu ............................................................................................. 32
9.4.2 Edit Menu ............................................................................................. 33
9.4.3 View Menu ........................................................................................... 34
9.4.4 Capture Menu ...................................................................................... 34
9.4.5 Configure Device .................................................................................. 36
9.4.6 Tools Menu .......................................................................................... 45
9.4.7 Help Menu ........................................................................................... 46
9.5 Toolbar ................................................................................................. 47
9.6 Status Bar ............................................................................................. 48
9.7 Capture, Recording, and Display Options ............................................. 48
9.7.1 Configuring Recording Options ............................................................ 49
9.7.2 Configuring Display Options ................................................................. 53
9.7.3 Configuring Capture Options ............................................................... 56
9.7.4 Setting On-Screen Text Parameters ..................................................... 58
9.7.5 Configure Startup ................................................................................. 59
9.7.6 Sharing ................................................................................................. 60
10 Configuring DVI2PCIe Duo from the Windows Control Panel ..................... 61
11 Mac OS X Video Capture Application ......................................................... 62
11.1 Starting the Mac OS X Video Capture Application ............................... 62
11.2 Menus ................................................................................................... 64
11.2.1 File Menu ......................................................................................... 64
11.2.2 Edit Menu ........................................................................................ 65
11.2.3 View Menu....................................................................................... 65
11.2.4 Tools Menu ...................................................................................... 65
11.2.5 Window Menu ................................................................................. 66
11.2.6 Help Menu ....................................................................................... 66
11.3 Toolbar ................................................................................................. 66
11.3.1 Save ................................................................................................. 67
11.3.2 Copy ................................................................................................. 67
11.3.3 Print ................................................................................................. 67
11.3.4 Record .............................................................................................. 67
11.3.5 Adjust ............................................................................................... 67
11.3.6 Info ................................................................................................... 67
11.3.7 Devices ............................................................................................. 68
12 Setting Apple QuickTime Options for Recording Videos ............................ 68
12.1 To add or remove a network device .................................................... 68
13 Web Broadcasting ..................................................................................... 71
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13.1 To set the display format for web streaming ....................................... 72
13.2 To start a web streaming session ......................................................... 72
13.3 Viewing a web broadcasting session .................................................... 73
13.4 Changing web streaming compression and performance .................... 74
13.5 Troubleshooting web streaming performance .................................... 74
14 Advanced Topics ........................................................................................ 75
14.1 EDID ...................................................................................................... 75
14.1.1 About EDID ...................................................................................... 75
14.1.2 Changing the EDID on your Frame Grabber .................................... 76
14.1.3 An EDID example ............................................................................. 77
14.2 Windows command line options .......................................................... 77
14.2.1 Creating a Windows Shortcut that Uses Command Line Options ... 78
15 Table of Figures ......................................................................................... 79
16 Software and Documentation License ....................................................... 81
DVI2PCIe Duo Introduction
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DVI2PCIe Duo User Guide
1. DVI2PCIe Duo Introduction
DVI2PCIe Duo™ is Epiphan's newest internal frame grabber with a DVI-I dual link and
an SDI input . It is installed in a video capture workstation’s PCI Express (PCIe) slot
and transmits captured data to the video capture workstation over the PCIe bus.
DVI2PCIe Duo captures video from any dual or single link DVI, unencrypted HDMI,
VGA, or 3G-SDI, HD-SDI and SD-SDI source. An optional A/V kit can be installed to
capture S-Video/composite, analog audio and balanced or unbalanced TRS audio.
DVI2PCIe Duo captures full HD at 60 frames per second and captures and streams
audio and HD video sources with resolutions up to 2048×2048 when connected to a
DVI-I dual link connector. The DVI2PCIe Duo capture card driver is fully compatible
with DirectShow in Windows, Video4Linux in Linux, and QuickTime in Mac OS X, and
can be used with third party software.
In addition to capturing video from SDI, DVI/HDMI/VGA and S-Video/composite video
sources, DVI2PCIe Duo supports DisplayPort, Mini DisplayPort, and Thunderbolt
sources using a converter cable, sold separately.
DVI2PCIe Duo is part of Epiphan’s complete line of video signal capture products.
For more information about all of Epiphan’s video signal capture products, please
see the Products page on the Epiphan website.
1.1 What’s in the box
The DVI2PCIe Duo frame grabber package includes the following:
1. DVI2PCIe Duo board (with full height PCIe bracket attached)
2. One DVI cable
3. One SDI cable (3G compliant)
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DVI2PCIe Duo User Guide
4. One DVI-VGA cable
5. One HDMI to DVI adapter
6. One Low-profile bracket
Figure 1: What’s in the box?
DVI2PCIe Duo Introduction
Physical Attributes
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DVI2PCIe Duo User Guide
2 Physical Attributes
2.1 System Hardware Features
The Epiphan DVI2PCIe Duo frame grabber is a PCIe x4 card that includes a DVI-I
type connector, SDI connector and three activity LEDs. The DVI2PCIe card can be
installed in a 4x, 8x or 16x PCIe slot on the motherboard of the video capture
workstation.
Note: To maintain high performance levels, the DVI2PCIe Duo card requires a
minimum of PCIe x4. Consult your motherboard manufacturer’s support to ensure
your motherboard supports PCIe x4.
Note: PCIe card performance is determined by the length of the card and slot, (x1, x4,
x8 or x16) and the generation of the PCIe card and the motherboard slot. The
DVI2PCIe Duo card is a generation 2 card and is fully backward compatible with first
generation slots; the card will perform at first generation speed. DVI2PCIe Duo card is
compatible with generation 3 slots; the card will perform at generation 2 speed.
Figure 2: DVI2PCIe Duo connectors and LEDs
Physical Attributes
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DVI2PCIe Duo User Guide
Interface
Description
LEDs
Red LED: During operation the red LED blinks each time the
DVI2PCIe Duo captures an image. You can use the red LED
as an indicator that the DVI2PCIe Duo is capturing images.
Green and blue LEDs: When the PC starts up the DVI2PCIe
Duo blue LED lights up. A few seconds later the green LED
Figure 4 shows an example of different PCIe slots on a single PC motherboard.
DVI2PCIe can be installed on any of the following PCIe slots.
Figure 3: PCIe slots (from top to bottom: 4x, 16x, 1x and 16x), compared to a traditional 32bit PCI slot (bottom)
When installed, the DVI2PCIe Duo card adds a DVI IN and an SDI IN port and an LED
indicator. You can connect a DVI-I (single link/dual link) source directly to the DVI IN
port using a standard DVI cable. You can connect an SDI source (3G-SDI, HD-SDI
and SD-SDI) directly to the SDI IN port using an SDI cable with a BNC connector. To
connect a VGA source, use a VGA to DVI cable. To connect an HDMI source, use an
HDMI to DVI adapter.
Table 1 LED Descriptions
Physical Attributes
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DVI2PCIe Duo User Guide
lights up. After about another 20 seconds the blue LED turns
off, leaving the green LED on indicating that the device has
started up and can start capturing images. During operation
the blue LED blinks during the signal test operation and when
the system tunes the parameters.
DVI In
Connect a DVI, VGA, or HDMI source to the DVI2PCIe Duo
card. See the DVI2PCIe Duo Specifications on the Epiphan
web site for information about the video inputs supported by
the DVI2PCIe Duo card.
2.2 Cables, Connectors and Adapters
The DVI2PCIe Duo can be connected to a number of different types of equipment
using a variety of cables, and adapters. This section describes a subset of connectors,
cables and adapters that are known to be compatible with the DVI2PCIe Duo.
2.2.1 VGA to DVI Cable
Connects a VGA source to the DVI2PCIe Duo DVI port. This cable is included with the
DVI2PCIe Duo.
Figure 4: VGA to DVI Cable
Physical Attributes
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DVI2PCIe Duo User Guide
2.2.2 DVI to DVI Cable
Connects a DVI source to the DVI2PCIe Duo DVI port. This cable is included with the
DVI2PCIe Duo.
Figure 5: DVI to DVI Cable
2.2.3 SDI to SDI Cable
Connects an SDI (3G, HD or SD) source to the DVI2PCIe Duo SDI port. This cable is
included with the DVI2PCIe Duo.
Figure 6: SDI to SDI Cable
2.2.4 HDMI to DVI Adapter
Physical Attributes
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DVI2PCIe Duo User Guide
Connects an HDMI source to the DVI2PCIe Duo DVI port. This adapter is included
with the DVI2PCIe Duo.
Figure 7: HDMI to DVI Adapter
2.2.5 DisplayPort Cable
Connects a source’s DisplayPort to the DVI2PCIe Duo DVI port (cable sold
separately).
Figure 8: DisplayPort Cable
2.2.6 Mini DisplayPort Cable
Connects a source’s Mini DisplayPort to the DVI2PCIe Duo DVI port (cable sold
separately).
Figure 9: Mini DisplayPort Cable
System Requirements
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DVI2PCIe Duo User Guide
Video source
any VESA-compatible VGA, DVI, or HDMI
source
Video capture workstation
4x PCIe slot (4x, 8x or 16x are supported)
Processor frequency
2 GHz or faster 32-bit (x86) or 64-bit (x64)
processor
2.2.7 Thunderbolt Port Cable
Connects a source’s Thunderbolt port to the DVI2PCIe Duo DVI port (cable sold
separately).
Figure 10: Thunderbolt Port Cable
3 System Requirements
Epiphan’s DVI2PCIe Duo internal frame grabber has the following hardware and
software requirements:
Installing DVI2PCIe Duo
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DVI2PCIe Duo User Guide
RAM memory
2 GB RAM (32-bit and 64-bit)
Available hard disk space
16 GB available hard disk space (32-bit) or 20
GB (64-bit)
Video capture workstation OS
Windows XP SP2 or newer;
Mac OS X 10.8 (Mountain Lion) or newer;
A list of precompiled drivers is available on the
Software Download page.
To download the latest versions of the DVI2PCIe Duo drivers and Epiphan Capture
Tool, browse to http://www.epiphan.com/products/dvi2pcie-duo/downloads/.
4 Installing DVI2PCIe Duo
This section describes how to install the DVI2PCIe Duo and to connect a
DVI/VGA/HDMI or 3G-SDI/HD-SDI/SD-SDI source to it.
Note: It is recommended that you download and install the latest drivers for the video
capture workstation motherboard from the motherboard manufacturer’s website after
installing the DVI2PCIe Duo internal frame grabber into the video capture workstation.
To connect the DVI2PCIe Duo card, in addition to the frame grabber itself you need:
• A video capture workstation with an available 4x, 8x or 16x PCIe
slot.
• A DVI/VGA/HDMI or a 3G-SDI/HD-SDI/SD-SDI video source.
• For VGA and HDMI video sources, the appropriate cable or adapter
to connect the video source input to the DVI IN port.
• An antistatic wrist strap to protect sensitive electronic components.
4.1.1 To install a DVI2PCIe Duo Frame Grabber:
This procedure describes how to install the DVI2PCIe Duo in a video capture
workstation.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
1. Shut down and power off the video capture workstation.
2. Disconnect all cables from the video capture workstation.
3. Open the system unit to expose the PCIe slots (usually located at the back of
the PC).
4. Attach the antistatic wrist strap to the metal casing of the PC power supply
and to your wrist according to the instructions supplied with the wrist strap.
5. Select a PCIe slot and remove the corresponding filler panel from the PC slot
opening.
6. Holding the DVI2PCIe Duo card by the edges, align the card edge connector
with the PCIe slot.
7. Slide the card mounting bracket into the small slot at the end of the PCIe
opening.
8. Applying even pressure at both corners of the card, push the card down until
it is firmly seated in the slot.
Caution: Do not use excessive force when installing the card into the PCIe slot. You
may damage the card’s PCIe connector. If the card does not seat properly when you
apply even pressure, remove the card and carefully reinstall it.
9. Secure the card mounting bracket to the system unit using a screw at the top
of the mounting bracket.
10. Detach the wrist strap and close the system unit.
11. Power on the video capture workstation.
12. Install the DVI2PCIe duo drivers and Epiphan Capture Tool as described
below.
5 Installation Steps for the Windows Video
Capture Workstation
Follow the step-by step procedures provided in this section when you use a Windows
PC as the video capture workstation to view and record images captured by a
DVI2PCIe duo frame grabber.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
Note: Install the drivers and Epiphan Capture Tool after installing the DVI2PCIe duo in
a PCIe slot on the Windows video capture workstation.
5.1 Install the Windows Drivers and Epiphan Capture
Tool
The drivers and application software includes the Epiphan device drivers and the
Epiphan Capture Tool.
1. Find the latest Windows drivers and Epiphan Capture software. Browse to
http://www.epiphan.com/products/dvi2pcie-duo/downloads/.
2. Scroll to the Windows section of the download page.
3. Download the latest version of the drivers and capture tool that will run on the
video capture workstation.
Make sure you note the download destination folder.
4. Unzip the downloaded file.
5. Right-click on the .zip file and choose Extract All.
6. Select the Setup Utility (setup.exe) from the list of extracted files; the Setup
Wizard window opens.
Figure 11: Setup Wizard
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
7. Click Next. The License Agreement window opens.
Figure 12: License Agreement window
8. Select I Agree.
9. Click Next; the Select Installation Folder window opens.
Figure 13: Select Installation Folder
10. Enter a path or file name, or browse to a location to save the frame grabber
software.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
11. Click Next; a Confirm Installation window opens.
12. Click Next; a progress bar appears. When the installation is complete, the
progress bar closes and a Windows Security window opens.
Figure 14: Windows Security window
13. Click Install. A Grabbers setup window opens. Indicating board detection is in
progress.
Figure 15: Grabbers setup window
13. Perform one of the following:
a. If the setup operation detects a mismatch between the driver software
and the FPGA image; go to Firmware Upgrade.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
Figure 16: Grabbers upgrade request window
b. If the installation is successful and no mismatches are detected, the
Installation Complete window opens.
Figure 17: Installation Complete window
14. Click Close. The Windows drivers and capture tool are now installed. If you
installed the drivers and capture tool software, the video capture workstation
after powering up should automatically recognize the frame grabber and
install drivers for it.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
5.2 Upgrading to the Latest Windows Software
Version
From time to time Epiphan makes new versions of all Epiphan Frame Grabber
software available from the Epiphan web site. To confirm that you have the latest
Epiphan Capture Tool software, select the Check for Updates command from the Help
menu.
Note: Check for Updates will only recommend an update if Epiphan recommends that
you install a new version. This will happen if the latest version contains significant bug
fixes or enhancements. If a new Epiphan Capture Tool software version only contains
minor changes, Check for Updates may not recommend that you install a new version.
In most cases you can upgrade the Epiphan software on your Windows video capture
workstation by following normal procedures for your operating system to download the
latest version and install it without uninstalling the previous version. If you have
problems upgrading Windows software, see the detailed driver update instructions and
install/uninstall instructions available from the Windows section of the Download page.
5.2.1 Finding Software Updates
To find the latest versions of all Epiphan software for Windows, go to
http://www.epiphan.com/downloads. You can also browse to the download page for
your DVI2PCIe Duo product. To do so, browse to http://www.epiphan.com and select
Products > DVI Frame Grabbers > DVI2PCIe Duo. On these pages you will find the
most recent versions of:
• Epiphan DVI2PCIe Duo User Guide.
• Epiphan USB device driver and video capture tool for Windows 2000, Windows XP,
and Windows Vista.
5.2.2 Firmware Upgrade
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
When you upgrade your driver, you may be prompted to upgrade your FPGA image.
Follow the steps below when DVI2PCIe Duo detects a mismatch between the driver
software and the FPGA image.
To update firmware:
1. Open the Epiphan Capture Tool from the video capture workstation; the
following window opens indicating a mismatch was detected.
Figure 18: Firmware version mismatch detected
2. Click on the Tools menu option; a dropdown menu opens.
3. Select Upgrade Grabber Firmware; the firmware upgrade request window
opens indicating the number of grabbers that require an upgrade. If there is
no available upgrade, the menu option is greyed out.
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
Figure 19: Grabbers upgrade request
4. Perform one of the following:
a. Click None when you do not want to upgrade the firmware for any of the
frame grabbers detected on the network. The window closes; minimal
firmware saved from on-board storage is applied.
b. Click All to upgrade the firmware for all frame grabbers detected on the
network; go to the next step.
5. A Grabbers upgrade status window opens and provides a progress of the
upgrade.
Figure 21: Grabbers upgrade status
Installation Steps for the Windows Video Capture Workstation
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DVI2PCIe Duo User Guide
6. When the upgrade is complete, a dialog box appears requesting a soft
reboot.
Figure 22: Important action required
7. Perform one of the following:
a. Click Reboot; the reboot cycle begins. The Frame Grabber software is
updated.
b. Click Cancel; the video capture workstation loads minimal firmware
saved from on-board storage.
5.3 Troubleshooting a Windows Installation
If you experience any difficulty viewing captured images with the Windows capture
tool, review the following items prior to contacting technical support.
Confirm that the DVI2PCIe Duo is properly installed in its PCIe slot and confirm that
the Windows Device Manager displays the DVI2PCIe Duo status under System
Devices > PCIe Bus. Finally, observe the behavior of the frame grabber LED
indicators.
If, after following the installation steps, you are still having problems, close all
applications and restart the video capture workstation. When the video capture
workstation has started up, open the Windows Device Manager to confirm that the
frame grabber is detected.
Mac OS X Video Capture Workstation Installation
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DVI2PCIe Duo User Guide
6 Mac OS X Video Capture Workstation
Installation
Follow the step-by step procedures in this section if you are going to use a Mac as a
video capture workstation to view and record images captured by the frame grabber.
6.1 To Install the Mac Drivers and Epiphan Capture
Tool
A single download from the Epiphan web site includes the capture application
command line capture application (v2u), the DVI2PCIe Duo system preferences and
the QuickTime digitizer (vdig).
1. Find the latest Mac drivers and capture tool software. Browse to
http://www.epiphan.com/products/dvi2pcie-duo/downloads/ and scroll down
to the Mac section of the download page.
2. Download the latest version of the drivers and capture tool that will run on the
video capture workstation. Make sure you note the download destination
folder.
3. Double-click on the .dmg file to unpack it if it does not unpack automatically.
4. Double-click on the .pkg file and follow the prompts.
Note: The final step of the installation requires restarting the video capture
workstation. If you have installed the drivers and capture tool software, the video
capture workstation should automatically recognize the frame grabber and install
drivers for it.
To install the DVI2PCIe Duo in the video capture workstation, refer to the section
Connecting DVI2PCIe Duo.
Mac OS X Video Capture Workstation Installation
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DVI2PCIe Duo User Guide
6.2 To Start the Mac OS Capture Application
On the video capture workstation, run the capture tool, from the Applications folder,
select DVI2USB.app. The capture application starts up. If the DVI2PCIe Duo frame
grabber is connected and powered on, the capture application should automatically
find the frame grabber and begin displaying captured images. If the frame grabber is
operating but not capturing images the device name and serial number should appear
in the title bar and the capture application displays No signal detected.
6.3 Upgrading to the Latest Mac OS X Software
Version
From time to time Epiphan releases new versions of all Epiphan frame grabber
software available from the Epiphan web site. In most cases you can upgrade the
Epiphan software on your Mac OS X video capture workstation by using normal
procedures to download the latest version and install it without uninstalling the
previous version.
Note: Some versions of the DVI2PCIe Duo user interface do not install a shortcut on
the Mac OS X desktop. You can drag the Epiphan icon from the Applications folder to
your desktop or add it to the Dock after installing a new version of the DVI2PCIe Duo
user interface. You may also need to delete older versions of the Epiphan icon.
6.4 Finding Software Updates
To find the latest versions of all Epiphan software and drivers for Mac OS X, go to
http://www.epiphan.com/products/frame-grabbers/dvi2pcie-duo/downloads/.
On this download page you will find the most recent release of the Epiphan device
driver, QuickTime component and DVI2PCIeDuo application compatible with Mac OS
X.
Linux Video Capture Workstation Software
24
DVI2PCIe Duo User Guide
7 Linux Video Capture Workstation Software
Epiphan provides the Epiphan USB device driver and the Epiphan capture API for
Linux. Epiphan does not provide a video capture tool for Linux. However, the USB
device driver is compatible with Video4Linux so you can use Video4Linux compatible
applications to receive and process captured images. You can also use the Epiphan
Linux SDK to write your own custom video capture application that receives captured
images from the Epiphan capture API. The following software components operate on
a video capture workstation running Linux:
The Epiphan USB device driver
Video4Linux
The Epiphan capture API
V4L custom video capture applications
7.1 The Epiphan USB Device Driver
The Linux Epiphan USB device driver receives images from an Epiphan DVI2PCIe
Duo and delivers the images to the Epiphan capture API and to Video4Linux. Before
delivering the images the Epiphan USB device driver also performs image adjustment
to improve the quality of the image. Image adjustments include setting the sampling
phase, PLL adjustments, and horizontal shift. The USB device driver can also change
the color depth of the captured image before sending the image to the video API. For
example, if the DVI2PCIe Duo is capturing the frames at a color depth that is different
than that required by the video capture application, the USB device driver converts the
images to the required color depth.
The Epiphan USB device driver may not be available for your version of Linux.
Epiphan does not provide source code for the Epiphan USB device driver. But you can
contact Epiphan if you need an Epiphan USB device driver compiled for a specific
Linux kernel version or kernel setting. Using the Epiphan software development kit
(SDK) you can also create custom USB device drivers that incorporate the functions
you need.
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