AV.io 4K - Digital Camera Epiphan - Free user manual and instructions

Product Type	Video Capture Device
Model	AV.io 4K
Brand	Epiphan
Maximum Resolution	4K (3840 x 2160) at 30 fps
Video Input	HDMI, DisplayPort, DVI, VGA (via adapter)
Video Output	USB 3.0 (Type B)
Audio Input	HDMI embedded audio
Dimensions (W x D x H)	5.5 x 3.5 x 1.0 inches (140 x 89 x 25 mm)
Weight	8.5 oz (240 g)
Power Supply	USB bus-powered (no external adapter required)
Power Consumption	4.5 W (typical)
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-4°F to 140°F (-20°C to 60°C)
Supported Operating Systems	Windows, macOS, Linux (UVC compliant)
Main Functions	Plug-and-play 4K video capture, low latency, supports various resolutions, frame rates, and color formats
Cleaning Instructions	Wipe with a soft, dry cloth. Do not use liquid or abrasive cleaners.
Safety Warnings	Do not expose to moisture or extreme temperatures. Use only with compatible USB ports.
Spare Parts & Repairability	No user-serviceable parts. Contact Epiphan support for repairs or replacement.
Warranty	Two-year limited warranty
Package Contents	AV.io 4K capture device, USB 3.0 cable, quick start guide

Frequently Asked Questions - AV.io 4K Epiphan

What video sources are compatible with the Epiphan AV.io 4K?

The AV.io 4K supports HDMI, DisplayPort, DVI, and VGA (with optional adapter) sources up to 4K resolution at 30 fps.

Does the AV.io 4K require external power?

No, it is bus-powered via USB 3.0. It draws power directly from the computer's USB port.

What frame rates can I capture at 4K?

At 4K (3840x2160), the maximum frame rate is 30 fps. Lower resolutions support higher frame rates up to 60 fps.

Is the AV.io 4K compatible with Windows, macOS, and Linux?

Yes, it is a UVC (USB Video Class) device, so it works plug-and-play on Windows, macOS, and many Linux distributions without additional drivers.

Can I capture audio simultaneously with video?

Yes, the AV.io 4K captures embedded HDMI audio. It is transmitted over USB along with the video stream.

What software can I use with the AV.io 4K?

Any software that supports UVC devices, such as OBS Studio, Zoom, QuickTime Player, VLC, and many video conferencing or streaming applications.

How do I clean the AV.io 4K?

Use a soft, dry cloth to gently wipe the device. Avoid liquids and abrasive cleaners to prevent damage.

What should I do if the AV.io 4K is not recognized?

Ensure you are using a USB 3.0 port and cable. Try a different USB port or cable. Restart your computer. If the issue persists, contact Epiphan support.

Is the AV.io 4K repairable if it fails?

The device has no user-serviceable parts. If it malfunctions, please contact Epiphan support for warranty service or repair options.

What is the warranty period for the AV.io 4K?

Epiphan offers a two-year limited warranty from the date of purchase covering manufacturing defects.

USER MANUAL AV.io 4K Epiphan

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Copyright © 2016 Epiphan Systems Inc. All Rights Reserved.

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For additional terms and conditions, please refer to additional sections in this document.

Thank you for choosing Epiphan Video!

At Epiphan Video, product function and quality are our top priority. We make every effort to make sure that our products exceed your expectations.

Product feedback

Your feedback is important! We regularly contact our customers to ensure our products meet your performance and reliability requirements. We strive to continually enhance our products to accommodate your needs. Please let us know how you think we can improve our products by emailing your suggestions to [e-mail].

Specifications

Go to the USB Video Grabbers page of the Epiphan Video website to get the most recent product specifications and additional information about AV.io 4K.

Warranty

All Epiphan Video products are provided with a 100% return to depot warranty for one year from the date of purchase.

Technical support

Epiphan's products are backed by our professional support team. If you are having issues with your product, please gather details about your system and contact our team by:

• E-mailing [e-mail]
• Live chat via the link on our support site
- Phone toll free at 1-877-599-6581 or call [phone]

Be sure to include as much information about your problem as possible, including:

• Problem description
  • Details of the video or audio source (type, resolution, refresh rate, etc.)
  • Product serial number
• Your operating system and version number

Copyright © 2016 Epiphan Systems Inc. All Rights Reserved

Firmware 3.1.0 release notes

Firmware 3.1.0 updates AV.io 4K with two new color spaces, and brings all Epiphan Video capture cards in line with the latest behind-the-scenes efficiency, fixes to limitations and known issues and new changes to the AV.io Config Tool. With this latest version of the firmware, each grabber will provide the same effortless, high-quality video capture experience.

Overview

AV.io 4K is the easiest 4K capture card you'll ever use. It doesn't need any special drivers installed on your computer – plug it in to your USB port and start using it right away. It's as simple as using a webcam! Windows, Mac and Linux operating systems automatically detect AV.io 4K, ensuring compatibility with your favorite software, including Skype, Wirecast and QuickTime.

What's new

This section provides detail on the main features included in firmware release 3.1.0.

1420 Color space

The I420 and YV12 color spaces give increased functionality at 4K resolutions, ensuring that AV.io 4K is compatible with a greater number of third-party softwares. Read more details in the Resolutions, capture rates and aspect ratios and Technical specifications sections.

New default resolutions

Several new default output resolutions were added, namely 1920×1200, 2048×1024, 2560×1440, 2560×1600 and 3200×1800. Read more details in the Resolutions, capture rates and aspect ratios and Technical specifications sections.

Use input signal resolution

Previous versions of AV.io Config software have allowed for you to pass through the resolution of your input source as the resolution of the output source, but 3.1.0 has some updates on how this works. See Configuration options for more details.

Custom resolution creation

You can now create a list of up to three custom resolutions that can be used as output formats. You can add these in the User modes tab of the AV.io Config software.

Significant changes to limitations, known issues and troubleshooting

Many changes have been made since the last firmware release for AV.io 4K. There have been lots of improvements to the efficiency and functionality. See Limitations and known issues and Troubleshooting for more details.

About AV.io 4K

AV.io 4K is the latest addition to Epiphan Video's industry-leading video grabbers product line, adding 4K resolution support while maintaining support for HD and SD resolutions. To use AV.io 4K, there's no software to install; simply connect the cables and go. It works on Windows, Mac and Linux and integrates seamlessly with your favorite third-party applications such as Skype, Adobe FMLE, Wirecast, VLCmedia player and Quicktime.

AV.io 4K captures resolutions up to and including 4096×2160, making it the simplest way available to capture DCI 4K and 4KUHD digital signals.

For those curious as to the difference between DCI 4K and 4K UHD, these are just different definitions of a 4K resolution. 4K UHD (3840×2160) is the standard 4K resolution available on televisions and other common display screens. The 4K resolution of 4096×2160 is referred to as Digital Cinema Initiatives (DCI) 4K, and is the resolution used almost exclusively for cinema-scale film production. It is rare to find this resolution outside of a cinematic context. AV.io 4K is capable of supporting input and output at either.

Registering your AV.io 4K

Why should I register my AV.io 4K?

It will allow you to activate your product warranty, give you notifications of firmware and software updates and get you our free personalized customer support.

How to register

1. Go to epiphan.com/register
2. Provide the required information. Your six digit serial number is found on your device. A valid e-mail address is required for product registration.

Table of contents

Thank you for choosing Epiphan Video! iv.

Firmware 3.1.0 release notes v

What's new v.

1420 Color space v

New default resolutions ____ v

Use input signal resolution ____ v

Custom resolution creation v

Significant changes to limitations, known issues and troubleshooting ____ vi

About AV.io 4K vii

Registering your AV.io 4K ......viii

Table of contents ix

Quickstart 1

Getting started 2

What's in the box? 2

System requirements 3

Technical specifications 3

Hardware 6

Hardware diagrams 6

Top cap view: 6

Bottom cap view: 6

Indicator LED details 7

Capture 8

How AV.io 4K works 9

Set up your AV.io 4K for capture 10

Resolutions, capture rates and aspect ratios 11

Automatic image scaling & audio resampling 13

Third-party applications 13

Configuration options 14

Input signal resolution (disabled by default) 14

Preserve aspect ratio (enabled by default) 15

Performance mode (enabled by default) 15.

User modes 16....

Install the AV.io Config tool 19.

Windows 19

Mac 20

Linux 21

Configure settings using AV.io Config tool 23

Identifying the input resolution on your AV.io 4K 25

Update firmware using the AV.io Config tool 26

Limitations and known issues 29

Affecting all operating systems 29

Affecting Windows 29

Affecting Ubuntu 29

Affecting Mac 29

Troubleshooting 30

Affecting all operating systems 30

Affecting Windows 30

Affecting Mac 31

Affecting Ubuntu 31

Affecting Chromebook 31

Software and documentation license 32

Quickstart

Setting up your AV.io 4K device to capture live video and audio content couldn't be easier!

Before you begin the connection process, you will require:

• An HDMI ^TM (or DVI-D) video source (with or without audio)
- Your AV.io 4K device
• A capture desktop computer, laptop or notebook
• A USB 3.0 cable (included with purchase) to connect to your AV.io 4K to your capture computer
• An HDMI cable (included with purchase) to connect your video source to your AV.io 4K

Once you have these things ready to go, you can now begin the simple process of hooking up your AV.io 4K so you can start capturing!

To connect your AV.io 4Kfor capture:

1. Connect your AV.io 4K device to your video source
2. Connect your AV.io 4K device to your computer
3. Open your favorite third-party application, select AV.io 4K from the list of available cameras and start capturing!

graph LR
    A["VIDEO SOURCE"] --> B["AVio 4K"]
    C["VRDA"] --> B
    D["Laptop"] --> B
    B --> E["CAPTURE STREAM RECORD"]
    B --> F["Video Stream"]
    B --> G["Video Record"]

And that's it! No drivers to install and no extensive set-up! Just connect the cables and you're ready to go!

Getting started

Welcome and thank you for buying Epiphan Video's AV.io 4K!

This guide contains all the information necessary to successfully use AV.io 4K to quickly and easily capture live video content without any configuration – simply connect the cables and you're ready to go!

This guide starts off by jumping right into it by showing you how to start capturing video, then we'll take you through how AV.io 4K works, followed with some technical reference material, and we'll conclude with a walkthrough of some optional video capture configuration.

Let'sget started!

What's in the box?

Your AV.io 4K product contains everything you need to easily capture live video content with minimal setup. Your purchase includes the following:

Table 1 Description of included purchase contents (for identification only, color and appearance of individual cables/adapters may vary).

AV.io 4K video grabber		Your video capture device!
HDMI connector cable (1 m / 3 ft)		Connects a HDMI source to your AV.io 4K'snative HDMI port.
USB 3.0 cable (1 m / 3 ft)		The USB 3.0 cable connects your AV.io 4K video grabber with your computer's USB 3.0 or 2.0 port.

System requirements

System requirements are the barebones technical essentials your computer needs to work with AV.io 4K. System requirements to use AV.io 4K include:

Video source	Any VESA-compatible HDMI (or DVI-D) source.
Video capture workstation	Any computer (laptop/desktop/other format) with:• a compatible USB 3.0 host controller for SuperSpeed operation and 4K functionality (for maximum performance, an Intel USB 3.0 host controller isneeded); or,• a USB 2.0 host controller (will limit maximum frame rate and resolution support)
Video capture workstation operating system	Windows 8.1, Windows 10MacOSX 10.10 and upLinux distribution with kernel 3.5.0 or higher
Processor frequency	Minimum recommended value: 2.4 GHz
RAM	Minimum recommended value: 4 GB

Technical specifications

Technical specifications for AV.io 4K are included in the table below.

Operating System support	Windows 8.1, Windows 10, Mac OSX 10.10 and up, Linux distribution with kernel 3.5.0 or higher
Drivers	Native UVC and UAC device auto-detected by OS
Input connector	HDMI
Input resolution	Standard and non-standard resolution from 640×360 up to 4096×2160 (4K DCI)
Output connector	USB 3.0 B-Type connector with USB 2.0 backward compatibility
Output scaling	Choose from: no scaling (1:1), preserve aspect ratio scaling or aspect ratio conversion scaling

Supported output resolutions		Color space YUY2 (4:2:2)	Color spaces NV12, YV12 and I420 (4:2:0)
	640×360	15, 23.97, 24, 25, 29.97, 30, 50, 59.94 or 60 fps	15, 23.97, 24, 25, 29.97, 30, 50, 59.94 or 60 fps
	640×480
	960×540
	1024×768
	1280×720
	1280×1024
	1600×1200
	1920×1080
	1920×1200
	2048×1024	5, 10,15, 20 fps	15, 23.97, 24, 25, 29.97, 30 fps
	2560×1440
	2560×1600
	3200×1800
	3840×2160 (4KUHD)
	4096×2160 (DCI 4K)* 5, 10,15, 20 fps
USB host controllers	When capturing 4K resolutions we recommend using a computer with an Intel USB host controller (this is the most common type) to achieve the best results. With other USB host controllers such as ASM, AMD, VIA, Renesas, Etron, Fresco and TI, capture will be at 79% to 96% of the expected frame rate.
HDMI audio input	Up to 96 kHz sampling rates
Audio output	16-bit 48 kHz stereo sampling rates
Capture latency	Near-zero. However, third-party applications may contribute capture delay
HDCP	High-bandwidth digital content protection (HDCP) protected content
	cannot be captured
LED LED indicatesthe statusof AV.io 4K
Dimensions	3.54" × 2.36" × 0.91"(90 mm × 60 mm × 23 mm)

* Note: For DCI 4K, the actual frame rate is limited to 24 fps for NV12/I420 and 15 fps for YUY2.

Hardware

This section describes the physical features of your AV.io 4K, including diagrams and hardware feature descriptions.

Topicscovered include:

• Hardware diagrams; and,
• Indicator LED details

Hardware diagrams

Your AV.io 4K device includes an input, an output and an indicator light.

Input/output ports and indicator lights are identified and explained in the top and bottom cap view AV.io 4K images below. Indicator light details are explained in the proceeding section.

Top cap view:

Bottom cap view:

Indicator LED details

The color and action of the indicator LED depends on whether you are connected by USB 3.0 or USB 2.0. For maximum performance, always use a USB 3.0 port and the included USB 3.0 cable. Note that frame capture rate will be reduced when connected via USB 2.0, and it is likely that any attempt to use 4K resolutions with USB 2.0 will be unstable.

From the operating system's UVC drivers, the application will receive the AV.io 4K supported color space, resolution and frame rates. If you're not sure if your controller is USB 3.0 or USB 2.0, plug AV.io 4K into the capture computer and look at the indicator LED. After initial boot up (red LED), blue is used for USB 3.0 and green is used for USB 2.0:

Close-up of a blue and white electronic device labeled 'Aio 4.6' with internal circuit lines and a blue connector (no readable text beyond branding)

Blue LED means USB 3.0

Close-up of a blue and white electronic device labeled 'Aio' with a blue connector and indicator lights (no readable text beyond branding)

Green LED means USB 2.0

Connection type/LED color	USB 3.0 connection	USB 2.0 connection
Solid red	Firmware update in progressAV.io 4Kinitializing	Firmware update in progressAV.io 4Kinitializing
Solid green	N/A	USB 2.0 connection active
Blinking green	N/A	Video and/or audio transferring successfully
Solid blue	USB 3.0 connection active	N/A
Blinking blue	Video and/or audio transferring successfully	N/A

Capture

Setting up your AV.io 4K device to capture live video content couldn't be easier!

Before you begin the connection process, you will require:

• An HDMI (or DVI-D) video source
- Your AV.io 4Kdevice
- Acapture computer, laptop or notebook
- A USB 3.0 cable (included with purchase) to connect to your AV.io 4K to your capture computer
- An HDMI cable (included with purchase) to connect your video source to your AV.io 4K

Once you have these things ready to go, you can now begin the simple process of hooking up your AV.io 4K so you can start capturing!

How AV.io 4K works

Once you're ready to start capturing, you'll need either a built-in or third-party application to capture video and audio content with AV.io 4K.

The application communicates with AV.io 4K and negotiates a color format (the range of available colors), frame rate (frequency at which frames in a video sequence are displayed) and frame resolution (size of a single video frame in pixels). Higher frame rate means smoother video capture while resolution determines the aspect ratio of the video output as well as its resolution and degree of definition.

With the help of AV.io 4K, the content from your video source is automatically configured and captured on your computer through your selected application. If the application requests a frame size that is smaller or larger than your video source, AV.io 4K automatically scales the video for you. For consistent and widely compatible output, audio is automatically resampled to 16-bit 48 kHz stereo audio.

No configuration required!

Set up your AV.io 4K for capture

Connecting your AV.io 4K to your capture computer is simple and is accomplished in three easy steps.

To connect your AV.io 4Kfor capture:

1. Connect your AV.io 4K device to your video source
2. Connect your AV.io 4K device to your desktop computer, laptop or notebook
3. Open your favorite third-party application, select AV.io 4K from the list of available input sources and start capturing!

graph LR
    A["VIDEO SOURCE"] --> B["1"]
    C["Laptop"] --> D["2"]
    E["Capture"] --> F["3"]
    G["STREAM"] --> H["4"]
    I["RECORD"] --> J["5"]
    B --> K["Avio"]
    D --> K
    F --> K
    H --> K

And that's it! No drivers to install and no extensive set-up! Just connect the cables and you're ready to go!

Resolutions, capture rates and aspect ratios

The resolution (also known as frame size or display mode) of a video signal, digital image, TV screen, computer monitor or other display device is a count of the number of pixels displayed horizontally and vertically. For example the resolution 1920×1080 (which is 1080p) creates an image that is 1920 pixels wide and 1080 pixels tall.

The aspect ratio of an image describes the proportional relationship between its pixel width and height. The resolution 1920 × 1080 (1080p) is quite a bit wider than it is tall. The ratio of its width to height is 16 to 9, represented as an aspect ratio 16:9.

AV.io 4K outputs resolutions in commonly supported aspects ratios. The table below is a color-coded legend for interpreting the two tables of product resolutions below it:

Aspect Ratio	Common Use
4:3	Standard TV (NTSC/PAL) display and non-widescreen computer displays
16:9	Widescreen (HD) TV displays (1080p, 1080i, 720p etc), and 4K-capable displays
16:10 (8:5)	Widescreen computer displays, and 4K-capable displays
5:4	Sometimes used in larger format computer monitors
1.90:1	Digital Cinema Initiatives standard resolution for 4K or 2K video projection

AV.io 4K accepts the following inputs by default:

640×480	1024×768	1280×720	1280×800
1280×1024	1440×900	1600×1200	1920×1080
1920×1200	2048×1080	3840×2160	4096×2160

If you're using an input resolution that is not on this list, it might still be possible to capture. However, the video might be stretched, or scaled to a different size and surrounded by black letter-boxing, based on the software and your configuration settings. Read Configure settings using AV.io Config tool for more detail.

AV.io 4K generates a list of the following possible resolutions for your capture application to select for output display:

640×360

640×480

960×540

1024×768

1280×720 1280×1024 1600×1200	1920×1080
1920×1200 2048×1024 2560×1440	2560×1600
3200×1800 3840×2160 4096×2160

Captured video content is output to your application, depending on your resolution and color space, at 5, 10, 15, 20, 23.97, 24, 25, 29.97, 30, 50, 59.94 or 60 frames per second (your application chooses one of these frame rates) when captured over USB 3.0.

When capturing 4K resolutions we recommend using a computer with an Intel USB host controller (this is the most common type) to achieve the best results. With other USB host controllers such as ASM, AMD, VIA, Renesas, Eltron, Fresco and TI, capture will be at 79% to 96% of the expected frame rate.

Automatic image scaling & audio resampling

If your source content is larger or smaller than the frame size chosen by the application, AV.io 4K automatically scales your source to match the desired frame size! No user configuration required!

AV.io 4K also automatically performs audio resampling, meaning that no matter the bit depth or frequency of audio through an HDMI audio source, AV.io 4K automatically resamples your audio so that your application gets a consistent audio sample rate and bit depth, even if you change the video source!

Third-party applications

AV.io 4K uses pre-installed drivers on your OS(called UVC drivers and UAC drivers) to communicate with third-party applications and capture content. Due to AV.io 4K's use of UVC/UAC technology, there is no need for driver installation. Just like a webcam, your AV.io 4K device is immediately recognized as a camera device (like a web cam) and can be used to capture content via any UVC-compatible third-party application.

Third-party applications that work with AV.io 4K include, but are not limited to the following list. Try your favorite capture application!

Zero-install applications (included with your OS)

Skype

(with Windows 8.1 and Windows 10)

Windows Camera app

(with Windows 8.1 and Windows 10)

QuickTime

(with Mac OSX)

Popular applications available for download

Skype

Wirecast

QuickTime

Adobe FMLE

VLC media player

Configuration options

Your AV.io 4K device is ready to use right out of the box; however, there is support for additional configuration should you need it.

Firmware updates and changes to default capture settings can be applied to your AV.io 4K using Epiphan's AV.io Config tool.

Detailed instructions on how to use AV.io Config can be found using the links below:

• Install the AV.io Config tool
- Configure settings using AV.io Config tool
- Update firmware using the AV.io Config tool
- Identify input details using the AV.io Config tool

The AV.io Config tool allows you to change several settings to make changes to your video capture experience if necessary. Most users won't need to use this utility for anything other than firmware updates, but advanced users may find these tweaks help them get the most out of their AV.io 4K.

These settings include:

• input signal resolution
• aspect ratio preservation
  • performance mode

Input signal resolution (disabled by default)

There are two key descriptors used in the process of video capture using a UVC-based device:

Extended Display Identification Data (EDID): The EDID describes to the video source, video player or computer which standard video formats (resolutions, frame rates, etc.) are supported by the capture device as video input.

UVC Descriptor: The UVC describes to the capture host computer which formats are available at the capture device USB port.

AV.io 4K does not enforce a direct relationship between the input and output signals. The list of EDID and UVC descriptions are identical so that if the input and output formats are the same, the signal can pass through without scaling. However, if input and output are set to different formats, AV.io 4K will automatically upscale or downscale video to the format requested as output by the capture software.

The Use Input Signal Resolution option allows you to use a video format that is not included on the EDID or UVC descriptors. When Use Input Signal Resolution is selected in the AV.io config tool, the input signal format is added to the UVC descriptor, which allows a 1:1 capture from the input video source. If the program you are using is compatible with the signal, you can capture your source in its original format.

For example, if your video resolution was 1680×1200, a resolution which is not on the EDID or UVC descriptor list, normally you would have to select the closest possible resolution from the provided output descriptor list in your capture application, and then AV.io 4K would automatically scale the video up or down to that format. However, if you select the Use Input Signal Resolution option, your capture application's list will have 1680×1200 as an option for output format.

There are two scenarios in which this feature will not perform as expected.

1. Not all third-party applications are able to support custom resolutions. AV.io 4K will send the custom resolution to the application, but if it is unable to use the resolution, the application will override any AV.io 4Kcustom capture settings.
2. In a Windows environment, due to restrictions set by Microsoft's Windows Hardware Quality Labs certification, most graphics adapters or drivers will not output resolutions not included in the EDID file of the connected display device. In the scenario where a resolution that is not included in the AV.io 4K standard resolution is requested, the Graphics adapter and driver will apply the resolution requested and then upscale it to AV.io 4K's default resolution. This means the Use input signal resolution feature will not add a custom resolution to the UVC descriptor and the capture software will be limited to the pre-defined resolutions.

Outside of these restrictions, the feature is recommended in any scenario where you wish the resolution of your captured video to be identical to the original video source.

Preserve aspect ratio (enabled by default)

When enabled, your AV.io 4K preserves the aspect ratio of your input signal by adding black bars to the sides or top and bottom of the frame (only for cases when the application using the signal requests a frame size with a different aspect ratio). For example, with this option enabled, a 4:3 input signal gets black bars added to the sides of the image when viewed in an application that requests a 16:9 aspect ratio. With this option disabled, the 4:3 image is instead stretched to fit the full 16:9 size.

Performance mode (enabled by default)

When enabled, your AV.io 4K enters and exits system suspend mode (i.e. sleep) faster by disabling support for the Suspend/U3 USB power state. This means AV.io 4K starts working again faster after your computer wakes from a system suspend state, at the cost of increased power consumption. Disabling this setting is ideal in situations where power consumption needs to be monitored, such as battery preservation in laptops.

Now that you've learned what these configuration settings do, you may want to Configure settings using AV.io Config tool or Update firmware using the AV.io Config tool.

User modes

The AV.io Config tool gives users the ability to specify custom resolutions. You can make use of up to three at one time, so you don't have to worry about changing the list every time you change which source you have connected.

To change the custom resolutions with the AV.io Config tool:

1. If needed, install the AV.io Config tool. For details specific to your OS, see Install the AV.io Config tool.
2. Connect your AV.io 4K device to your computer, laptop or notebook.
3. Open the AV.io Config tool.

1. Select your AV.io 4K device from the list under the Devices heading.

If your video grabber is not displayed, press the Refresh icon to refresh the list of connected devices.

1. Click the User modes tab; the User modes page appears.

1. To create a custom resolution, click the check box for one of the user modes. The grayed-out area becomes open for changes.
2. Select the text box labeled Width, erase the number that is currently in the box, and type out the width of the custom resolution you wish to use. Then do the same for the resolution height in the text box labeled Height.
3. Click Apply: The custom resolution you defined will now be added to the list of output resolutions that you are allowed to select from the settings menu from the third-party application of your choice.

1. If needed, you may follow the same process for User mode 2 and User mode 3. If all three are checked and applied, all three custom resolutions selected will appear in the list of resolutions. You may change the definition of any of these three resolutions at any time.

There are two scenarios in which this feature will not perform as expected.

1. Not all third-party applications are able to support custom resolutions. AV.io 4K will send the custom resolution to the application, but if it is unable to use the resolution, the application will override any AV.io 4Kcustom capture settings.
2. In a Windows environment, due to restrictions set by Microsoft's Windows Hardware Quality Labs certification, most graphics adapters or drivers will not output resolutions not included in the EDID file of the connected display device. In the scenario where a resolution that is not included in the AV.io 4K standard resolution is requested, the Graphics adapter and driver will apply the resolution requested and then upscale it to AV.io 4K's default resolution. This means the User modes feature will not add the custom resolutions to the UVC descriptor and the capture software will be limited to the predefined resolutions.

Outside of these restrictions, the feature is recommended in any scenario where you wish to use a custom output resolution.

Install the AV.io Config tool

Epiphan's AV.io Config tool is used for loading firmware updates on your AV.io 4K and for advanced settings changes.

You may install AV.io Config on the same computer(s) where you use AV.io 4K, or only on one computer for configuration. All firmware updates and settings changes are saved to the device and work without any software installed on the computer.

To install the AV.io Config tool, follow the directions below for your computer's operating system.

Windows

1. Download the AV.io Config package under the Windows heading on the AV.io 4K Downloads page on Epiphan's web site.
   http://www.epiphan.com/support/avio-4k-drivers-documentation/
2. Extract all the files from the zip file (remember the location you're unzipping to).
3. Browse to the unzip folder and open the AV.io Config tool by double-clicking on AVioConfig.exe. (Depending on your local security settings, you may need to right-click and choose to run the file as an administrator).
4. AV.io Config starts! If you video grabber is connected to the computer by USB, it is detected.

Mac

1. Download the AV.io Config package under the Mac OS X heading on the AV.io 4K Downloads page on Epiphan's web site.

http://www.epiphan.com/support/avio-4k-drivers-documentation/

1. Double-click the downloaded file to open the disk imagepackage.

1. If desired, drag the AVioConfig application to your desktop or another location where you will find it for future use.

2. Double-click the AVioConfig application icon to launch AV.io Config; a warning box appears.

1. Click Open.

2. AV.io Config starts! If you video grabber is connected to the computer by USB, it is detected.

Linux

1. Download the AV.io Config package under the Linux heading on the AV.io 4K Downloads page on Epiphan's web site.

http://www.epiphan.com/support/avio-4k-drivers-documentation/

1. Untar and unzip the contents of the .tar.bz2 file (tar -xjvf can be used to untar and unzip in one command).

2. Browse (or change directories) to the unzip folder.

3. Ether: Double-click the AV.io Config application icon or execute the AV.io Config application from the command line to launch AV.io Config (/AVioConfig).

4. AV.io Config starts! If you video grabber is connected to the computer by USB, it is detected.

Configure settings using AV.io Config tool

Epiphan's AV.io Config tool gives advanced users the ability to change several settings to their video capture experience. The settings that can be changed include: Re-numerate input signal resolution, aspect ratio preservation and performance mode. See Configuration options for more details.

To change the configurable settings with the AV.io Config tool:

1. If needed, install the AV.io Config tool. For details specific to your OS, see Install the AV.io Config tool.
2. Connect your AV.io 4K device to your computer, laptop or notebook.
3. Open the AV.io Config tool.

1. Select your AV.io 4K device from the list under the Devices heading.

If your video grabber is not displayed, press the Refresh icon to refresh the list of connected devices.

1. Click the Settings tab; the settings page appears.

1. Enable or disable the individual settings by clicking each checkbox according to your needs. See Configuration options for a description of each setting.

Identifying the input resolution on your AV.io 4K

The AV.io Config tool can help you figure out exactly what information your video source is sending. Plug in the source and select your device. The UI detects information about the source and presents it at the bottom of the window.

The line tells you what connector the video source is using (in this case, HDMI), the exact resolution of the source (1920×1080p), the frame rate the source is outputting (60 fps) and the color model (RGB).

Update firmware using the AV.io Config tool

From time-to-time Epiphan Video releases firmware updates for our video grabbers. If you register your product and agree to be notified of product updates, you'll receive an email when there is an AV.io 4K update available for download.

When new firmware is available, you can load this firmware onto your AV.io 4K using the AV.io Config tool and the steps below.

Attempting to update firmware while running virtual machines will result in firmware upgrade failure.

To update firmware using the AV.io Config tool:

1. If you haven't already done so, download and install the AV.io Config tool. See Install the AV.io Config tool.
2. Download the firmware update file from the Epiphan website, as described in your firmware update notification email or discussion with your vendor.
3. Connect your AV.io 4K device to your computer, laptop or notebook.
4. Open the AV.io Config tool.

1. Select your AV.io 4K device from the list under the Devices heading.

If your AV.io 4K device is not displayed, press the Refresh icon to refresh the list of connected devices.

1. Using the diagram below, check the current firmware version of your AV.io 4K. If it is the same version as the new firmware you downloaded, there is no need to do the firmware update.

2. Click the Firmware tab

1. Click the folder icon to navigate to the saved location of the firmware, and click Update to update your video grabber to the selected firmware; an update bar appears and displays the progress of the update.

Do not disconnect your AV.io 4K at any point during the update process! Doing so may cause irrevocable errors and/or permanently damage the device.

1. When the update is finished the progress bar turns green and displays "Update Completed" (Note the firmware update will not be automatically reflected in the Devices list unless the Refresh icon is clicked). You may now safely disconnect your AV.io 4K if needed.

When updating firmware on a Mac, the "Update Completed" text will not be displayed. The firmware upgrade is complete when the progress bar fills the width of the AV.io Config window and the window contents are no longer greyed out.

Limitations and known issues

This section includes known issues or limitations that affect functionality or usability and ways that you can work around these limitations.

Affecting all operating systems

- UVC-314: With the exception of the first capture after system reboot, the very first captured frame is always green.

- Workaround: Remove the green frame in post-production editing. If streaming the captured video, begin streaming after the initial green frame has already been captured.

- UVC-438: When capturing from a source at 720p, 50 fps will occasionally detect as 51 fps, and when capturing at 1600×1200, 60 fps will occasionally detect as 61 fps.

- Workaround: None necessary. This often occurs due to inherent inaccuracies in rounding decimal point fps rate to whole numbers. The reading is still accurate to your expected rate.

Affecting Windows

- UVC-270: Windows 10: Sometimes, Windows 10 will not recognize the grabber properly when connected by a Fresco FL1100 USB 3.0 controller.

- Workaround: Press the refresh icon to refresh the device list or unplug and reconnect the USB. If neither of these work, a different USB 3.0 host controller might be required.

Affecting Ubuntu

• UVC-454: When saving settings, device does not seem to save changes.

- Workaround: The most likely cause is caching. After saving changes, wait 10-15 seconds before rebooting, turning off or unplugging your device.

Affecting Mac

- UVC-450: Device does not boot when connected to Mac USB 3.0 port with USB 2.0 cable.

- Workaround: Wait for 20-30 seconds. If device sill does not boot, it will be necessary to use the USB 3.0 cable.

Troubleshooting

Use the follow table for help if you are experiencing problems or unexpected behavior from your AV.io 4K.

Affecting all operating systems

Symptom(s) Action(s) to resolve
Frame rates lower than 30 fps at 4Kresolutions	1) Optimize performance by using an Intel USB host controller.2) Use your application to change the color space you are using. At 4K resolutions, NV12 and I420 (4:2:0) are available at 15,23.97, 24, 25, 29.97, or 30 fps, and YUY2 (4:2:2) is available at 5, 10, 15, or 20 fps.

Affecting Windows

Symptom(s) Action(s) to resolve
Incorrect input resolutions detected	If using Windows 8.1 or 10 with VLC Media Player 2.2.1, downgrade to an earlier version of VLCor use a different capture application, such as Adobe FMLE.
Not able to capture UHD resolutions at 30 fps when using VLC	VLCdoes not support the NV12 (4:2:0) colorspace. 4Kmust be captured in either the YUY2 (4:2:2) colorspace,which will reduce the frame rate to 20 fps, or I420 (4:2:0) which will allow you to capture at speeds of up to 30 fps.
Captured video file displays black screen when opened.	If capturing on Windows 8.1 using Windows Movie Maker with your AV.io 4K connected to an Etron EJ188H USB 3.0/2/0 host controller, switch to a different capture application,connect to a different USB port,or upgrade to Windows 10.
Firmware update fails	If updating on a computer running Windows 8.1 or 10 with your AV.io 4K connected to an Etron3.0 host controller, perform the firmware update on another computer (without an Etron USB host controller) or using another USB port on the same computer. Note that USB 2.0 can be used for firmware updates.

Affecting Mac

Symptom(s) Action(s) to resolve
Recorded file does not have audio.	If using VLC Media Player 2.2.1,downgrade to an earlier version or use a different capture application,such asQuicktime.

Affecting Ubuntu

Symptom(s) Action(s) to resolve
Video cannot be resumed if stopped during a Skype call.	If capturing on Ubuntu 14.04 LTSwith your AV.io 4K connected to an Etron EJ168A USB 3.0 controller, switch to a different USB port or simply avoid stopping the Skype call. If it isnot possible to stop the Skype call or if it stops accidentally, disconnect and reconnect the device. You may need to restart the video call.

Affecting Chromebook

Symptom(s) Action(s) to resolve
AV.io 4K is not detected as a valid audio device.	If capturing usingChromebook Apps Clipchamp andWebRTCon Google Chrome OS v43.0.2357.125 (64 bit), use a different Chromebook app to capture both video and audio, such as Screencastify or MediaCore Capture.

Software and documentation license

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March 28,2014

Environmental Information

The equipment that you bought has required the extraction and use of natural resources for its production. It may contain hazardous substances that could impact health and the environment. In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle most of the materials of your end life equipment in a sound way. The crossed-out wheeled bin symbol invites you to use those systems. If you need more information about collection, reuse and recycling systems, please contact your local or regional waste administration. You can also contact us for more information on the environmental performance of our products.

Important Safety Warnings

WARNING: This product has no user-serviceable parts and the battery used in this device is not replaceable. Do not attempt to disassemble. Return the device for service.

CAUTION, RISK OF ELECTRIC SHOCK: This device may have multiple AC power cords installed. All power sources shall be disconnected before servicing to avoid shock hazard.

FCC & CE Compliance Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference
2. This device must accept any interference received, including interference that may cause undesired operation.

Marking by the symbol C€ indicates compliance of this device with EMC directive of the European Community and meets or exceeds the following technical standard.

EN 55022 - Limits and Methods of Measurement of Radio Interference Characteristics of Information Technology Equipment.

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This document may contain links to non-Epiphan web sites. These links are provided to you as a convenience, and Epiphan is not responsible for the content of any linked web site. Any outside web site accessed from the Epiphan web site is independent from Epiphan, and Epiphan has no control over the content of that web site. In addition, a link to any non-Epiphan web site does not imply that Epiphan endorses or accepts any responsibility for the content or use of such a web site.

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These Terms and Conditions for use of this document and the associated Epiphan Product are governed and interpreted pursuant to the laws of the province of Ontario, Canada, notwithstanding any principles of conflicts of law.

All disputes arising out of or relating to these Terms and Conditions shall be finally resolved by arbitration conducted in the English language in Ottawa, Ontario, Canada under the commercial arbitration rules of the Canada. The parties shall appoint as sole arbitrator a retired judge who presided in the province of Ontario. The parties shall bear equally the cost of the arbitration (except that the prevailing party shall be entitled to an award of reasonable attorneys' fees incurred in connection with the arbitration in such an amount as may be determined by the arbitrator). All decisions of the arbitrator shall be final and binding on both parties and enforceable in any court of competent jurisdiction. Notwithstanding this, application may be made to any court for a judicial acceptance of the award or order of enforcement. Notwithstanding the foregoing, Epiphan shall be entitled to seek injunctive relief, security, or other equitable remedies from any court of competent jurisdiction.

If any part of these terms is unlawful, void, or unenforceable, that part will be deemed severable and will not affect the validity and enforceability of the remaining provisions. Epiphan may, at its sole discretion and without notice, revise these terms at any time by updating this posting.

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All Rights Reserved.