Epiphan Pearl-2 User Manual

UserGuide

Epiphan Pearl-2

Pearl-2 Rackmount

Pearl-2 Rackmount Twin

© and ™ 2019, Epiphan Systems, Inc

Release 4.7.1

February 20, 2019

UG115-13

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ii

Thank you for choosing Epiphan!

At Epiphan Video (“Epiphan”), building reliable video systems with pro features that perform above your
expectations is our mission.

We value your feedback! Email us your suggestions and let us know how you think we're doing and where
you'd like to see our products improve: [e-mail]

Warranty

All Epiphan Systems 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. You can reach our team several ways:

l Email [e-mail]

l Live chat from our support site https://www.epiphan.com/support/

l Phone toll free at 1-877-599-6581 or call [phone]

Gather as much information about your problem as you can before you contact us so we can help you better,
including:

l A description of the problem

l Details about your video or audio source (type, connection, resolution, refresh rate, etc.)

l Product serial number

l Product firmware version (using the admin interface)

l Product LED lights

iii

What's new in release 4.7.1?

Firmware 4.7.1 is a maintenance release that includes an important stability fix for AFU for your Pearl-2 and
an important BIOS update.

What's fixed

AFU to SFTP server stability improvement

The stability of automatic file uploads (AFUs) to SFTP servers has been improved.

BIOS update to resume status after a power cycle

This BIOS update corrects the power cycle behavior of Pearl-2's purchased after August 2018 and older units
that were updated with the last BIOS update. With this BIOS update, Pearl-2 returns to same status that it was
in before an unexpected power loss. So if there's an unexpected power lose while Pearl-2 is recording (or
streaming), when power is restored, Pearl-2 resumes recording (or streaming).

iv

Table of contents

What's new in release 4.7.1? iv
Table of contents v

Start here 1

About this Guide 1
What is Pearl-2? 2

Feature add-ons 3

Front and back view Pearl-2 4
What's in the Box? 10
Quick start 12
Live video mixing / switching 17
Monitoring audio 18
Selecting an audio source 20
Connecting microphones to the XLR line level inputs 22
Remote login access 23

About remote login and control using AV Studio 23

Enable or disable AV Studio remote login 25

Pair a channel with AV Studio 26

Control recording using AV Studio 27

Configure channel encoding using AV Studio 28

Access cloud versions of the Admin panel and Epiphan Live 30

Specifications 32

AV inputs 32

Tech specs 33

Optimum CPU performance 36

User interfaces 38

The touch screen 39

About the touch screen 39

The Channel view 41

Record a channel using the touch screen 43

Stream a channel using the touch screen 44

Switching / mixing using the touch screen 45

One Touch streaming and recording control 47

Configure the touch screen 54

The Admin panel 62

About the Admin panel 62

v

Connect to the Admin panel 64

Connect using the Epiphan discovery utility 66

Connect using a DNS-based service discovery 67

Connect using persistent static IP address 68

Switching / mixing using the Admin panel 69

Epiphan Live 71

About Epiphan Live 71

The Dashboard interface 72

Access Epiphan Live using a web browser or mobile device 74

Access Epiphan Live from the Admin panel 75

Stream, record, and monitor using the Dashboard interface 76

Switching / mixing using Epiphan Live 84

Your recordings 88

PART 1: Setup 90

Rackmount installation 91
Configure network settings 92

Network ports used by Pearl-2 92

Verify IP address and MAC address of Pearl-2 94

Configure a static IP address 95

Configure DHCP 98

Change the HTTP/HTTPS port values 100

Perform network diagnostics 100

Disable the network discovery utility 102

Configure network security 103

Configure 802.1x network security and manage user certificates 103

Manage CA and self-signed certificates 105

Configure HTTPS 106

Tether to a mobile network 107
Configure date and time 110
Audio input ports 114

Configure audio ports for stereo or mono 114

Assign audio sources to an input 115

Adjust audio gain and delay 116

Mute audio 118

Video output ports 121

About video output ports 121

Video output port resolution 122

Show a channel or video source on the output port 123

vi

Preview the video output port 125

Disable the video output port 126

Disable or enable audio and output port volume 127

Display and reposition the audio VU meter 128

Rename a video output port 129

Mirror the video output port display 130

Feature add-ons 132

4K feature add-on 135

Set up Kaltura CMS integration 137

Enable CMS and register with Kaltura 137

Disable or deregister the device from Kaltura 139

Change the resource name used for Kaltura 140

Reassign a registered resource 141

Configuration presets 144

About configuration presets 144

Configuration preset considerations 146

Configuration groups 151

The Factory default configuration preset 152

Create a configuration preset 153

Apply a configuration preset using the Admin panel 154

Apply a configuration preset using the touch screen 155

Export and import configuration presets 157

Update a configuration preset 159

Delete a configuration preset 160

User administration 161

User types and privileges 161

Set or change user passwords 165

Remove user passwords 166

Overcome lost passwords 167

Configure LDAP user authentication 168

Change the logged-in user 170

Restrict viewers by IP address 170

IP restriction examples 172

Status and monitoring 175

PART 2: Capture 188

What is a channel? 189

Channel layout examples 190

vii

About automatic channels Auto A and Auto B 193

Channel configuration 196

Configure auto channels 197

Create a channel 197

Add video sources or a channel as a source 201

Add an audio source to a layout 205

Duplicate a channel 206

Rename a channel 207

Delete a channel 208

Preview channel 209

Add or remove channel metadata 212

Configure encoding 213

Codecs and file format compatibility 213

Configure video encoding 215

Configure audio encoding 220

Multi-encoding and channel as a source 221

Custom layout configuration 223

About the custom layout editor 223

Resize and position items using percents or pixels 227

Open the custom layout editor for a channel 234

Add or edit a custom layout 235

Rename a layout 237

Delete, move, or duplicate a layout 238

Set the background color 240

Add an image to a layout 241

Upload or remove an image using the Media page 243

Add a text overlay 245

Custom system variables for text overlays 248

Crop a video source 248

Configure chroma keying 251

Performance considerations 252

What is upstream chroma keying? 252

What is downstream chroma keying? 253

Set up chroma key for a green screen video source 254

Add chroma key titler effects using Microsoft Powerpoint slides 260

Add external titler software effects to Pearl-2 265

Video and audio input sources 272

About connecting video and audio sources 272

viii

Tested RTSP-based IP cameras 274

Supported web cameras 276

Connect an RTSP source 276

Connect an AV.io video grabber 278

Preview a video source using the Admin Panel 279

Rename an input port 280

Configure a video input source 281

DVI and HDMI signals 282

USB signals 284

RTSP sources 287

Add a custom No Signal image 287

PART 3: Stream 289

What is streaming? 290

Secure streaming using RTMPS 290

Stream settings for video and slides 291

View supported streaming formats 292

Streaming a channel directly to viewers 293

Stream content using HTTP, HTTPS or RTSP 294

Stream content using HLS (HTTP/HTTPS) 295

Directly share stream URLs with viewers 296

View the live broadcast URL using a web browser 297

View the streaming URL using a media player 300

Restrict viewer access to channel streams 301

Restrict viewers by IP address 302

IP restriction examples 304

Change HTTP and RTSP streaming port values 306

Disable and enable direct channel streaming 308

Streaming to a server 309

Stream to a CDN 310

Start and stop streaming to a CDN 311

Set up a stream using RTMP or RTMPS push 313

Set up a stream using RTSP announce 315

Stream to a CDN using an XML profile 316

Stream to Wowza Streaming Cloud 318

Stream to Original Livestream 321

Stream using multicast 323

MPEG-TS streams using RTP/UDP push 323

ix

MPEG-TS streams using UDP push 325

Multicast streaming using RTP/UDP 327

Viewing with Session Announcement Protocol (SAP) 328

Stream to Kaltura CMS 329

Set up a channel for a scheduled webcasting event 329

Use RTMPS for a Kaltura webcasting event 331

Stream to a media player or smart TV 333

Stream using UPnP 333

Enable UPnP 334

Disable UPnP 337

Viewing with UPnP 338

Play directly to a media player 340

Auto-restart playback to a UPnP device 340

Change UPnP device name 341

PART 4: Record 342

About recording 343
Record a channel 344
Record using One Touch control 346
Configure recording settings, file size and type 347
Restart recording 350
Recorders 352

Add a recorder 352

Select channels to record 353

Start and stop a recorder 354

Rename a recorder 355

Duplicate a recorder 356

Delete a recorder 356

Record to Kaltura CMS 358

About recording to Kaltura CMS 358

Select channels for VOD event views 361

Manually start/stop scheduled VOD events 362

Manually start/stop an ad hoc event 364

Manage recorded files 367

View list of recorded files 367

Download recorded files manually 368

Join recorded files together 369

Extract tracks from a recording 370

Rename recorded files 372

x

Delete recorded files 372

FTP and automatic file transfers 374

About Automatic File Upload (AFU) 374

Choose files to include in AFU 375

Enable AFU and set parameters 377

Configure AFU to FTP server parameters 380

Configure AFU to RSync server parameters 381

Configure AFU to CIFS server parameters 383

Configure AFU to SCP client parameters 384

Configure AFU to SFTP server parameters 386

Configure AFU to AWS S3 parameters 389

Configure AFU to WebDav server parameters 390

AFU or copy to USB 392

AFU to a USB storage device 392

Do a one-time copy/move all recordings to USB storage device 393

Manually copy recordings to USB storage device 395

View available USB storage space 397

Safely eject USB storage device 397

View the AFU log 397

Manage the AFU queue 398

Local FTP server 401

PART 5: Maintenance 405

Power down and system restart 406
Backup your Pearl-2 setup 408
Perform a factory reset 409
Firmware upgrade 410
Support 415
Storage space maintenance 419
Third party integration 422

Controlling Pearl-2 using RS-232 / serial port 423

Controlling Pearl-2 using HTTP/HTTPS commands 429

Configuration keys for third party APIs 435

xi

Troubleshooting 448

Limitations and known issues 460

Previous releases and features 464

Software license 466

xii

Pearl-2 User Guide Start here

Start here

Welcome, and thank you for buying Epiphan Pearl-2™, Pearl-2 Rackmount™ or Pearl-2 Rackmount Twin™.
You'll find information on how to set up and use all three models in this user guide. Whenyou see the name
Pearl-2 used in this guide, it means that the content applies to all three models. Differences are explicitly called
out. For a product description, see What is Pearl-2?.

See the Quick start for basic steps to get a single video source (and optional audio) set up so you can stream
and record some output right away. The rest of the guide shows you how to tweak the system exactly how
you want it so you can take advantage of the many advanced features.

About this Guide

After the introductory section and quick start, the next chapter describes the main user interfaces that are
used to operate and configure Pearl-2. You'll find everything that you need to successfully access and use
these interfaces:

l Touch screen

l Admin Panel

l Epiphan Live

The rest of the user guide covers setting up and operating your system for a successful video switching,
recording, and live streaming experience. The chapters are organized in to these five categories: Setup,

Capture, Stream, Record and Maintenance.

1

Pearl-2 User Guide What is Pearl-2?

This guide assumes that all feature add-ons for Pearl-2 are activated. If a documented feature or task is only
available when a specific feature add-on is activated, it is indicated by a link to the activation page for that
feature add-on. For the 4K add-on, the link is 4K .

What is Pearl-2?

Pearl-2 is a versatile live video production device that's a video encoder, video streamer, live switcher, and
video recorder all in one. Pearl-2 comes in three models.

Pearl-2

A small, silent, portable

system that comes with a

hard-shell carry case.

With Pearl-2, you can capture, record, and stream from computer monitors, radar displays, or almost anything
that outputs to SDI, HDMI™, USB, HDMI 4K4K or DVI-I(single link). Capture audio from XLR, RCA,, USB, SDI
or HDMI sources.

Simultaneously capture up to six full HD video sources or up to four 4K sources if you have the 4K feature
add on installed. You can create up to five simultaneous channels for live switching, or a single 4K channel.
Have separate ISOs or create custom layouts with multiple video sources and picture in picture. You can do all
that with Pearl-2.

Easily watch live streams using your favorite web browser or media player on mobile devices and computers
connected to the same private network as Pearl-2 or using Content Distribution Networks (CDNs). Recorded
files can be downloaded via FTPor set to automatically upload via FTP, RSYNC, or CIFS and can be integrated
into your Content Management System (CMS). Pearl-2 is also fully integrated with Kaltura CMS and can be
registered as a video encoder resource for easy lecture capture.

A 2U rackmount system with all the

Pearl-2, but designed for installation

Pearl-2 Rackmount

same functionality as the portable

and operation in a rack.

Pearl-2 Rackmount Twin

A high density 2U rack mount

variation that contains two complete

(and independent) Pearl-2 systems.

Network security compliance with 802.1x protocols, passwords, and certificate authentication means an
easier setup for IT friendly live streaming over enterprise networks. HTTPS enabled for secure administration
and control over the LAN, and RTMPS support for secure, encrypted live streaming.

2

Pearl-2 User Guide Feature add-ons

Pearl-2 does not capture from HDCP encrypted sources.

Feature add-ons

Pearl-2 offers add-on features so you can do even more with your system. Start from the base model of Pearl­2 and add feature add-ons for extra functionality.

See Add-ons overview for details about the availability of add-ons for your system, as well as instructions to
purchase and install add-ons.

Where you see this symbol 4K in the guide, that means the feature or function applies only if you
have activated the 4K feature add-on.

3

Pearl-2 User Guide Front and back view Pearl-2

Front and back view Pearl-2

Table 1 Pearl-2 front panel descriptions

Label Name Description

Touch screen front panel
display

USB 3.0 port

3.5 mm audio jack

Power button

Used for confidence monitoring and simple configuration, obtaining
system information, and starting/stopping recordings and streams.

For connection of external hard drives, flash drives or control
interfaces, see AFU or copy to USB. Web cameras cannot be
connected to this port, only the ports on the rear.

For audio confidence monitoring. Plays the audio for the currently
visible channel.

Press once to power on. Double-press to initiate a graceful system
shutdown.

4

Pearl-2 User Guide Front and back view Pearl-2

Table 2 Pearl-2 back panel descriptions

Label Name Description

The four XLR ports can function as two, professional line level
left/right stereo pairs (XLR A pair and XLR B pair) or as four mono

XLR audio in

HDMIin

12G SDI in

RCA audio in

RS-232 port For connection to a control computer terminal.

HDMIoutput ports

inputs, see AV inputs.

The XLR ports are professional line-level inputs and are calibrated for
+ 4.0 dBu signals.

Four HDMI 1.4 ports that connect HDMI and DVIsignals to Pearl-2.
The first two ports allow for any signal up to full HD, and the second
two inputs allow for any input resolution up to 4K4K .

Connects SDIsignals toPearl-2, including 3G-SDI; 6G-SDI; 12G-SDI;
4K-SDI; HD-SDI; SD-SDI

The RCA ports are consumer line level, left/right stereo pair and are
calibrated for - 10 dBV signals.

HDMIoutput for connection to a display or projector (up to 4K1). Port
1 is HDMI 2.0, and Port 2 is HDMI 1.4, see Video output ports.

USB3.0 ports

For connection of external hard drives, flash drives, USB webcameras,
USB microphones or control interfaces, see AFU or copy to USB.

5

Pearl-2 User Guide Front and back view Pearl-2

Label Name Description

RJ-45 Ethernet

Power jack Plug the supplied 120/240 V AC power cable in here.

1

Requires 4K feature add on

The SDI ports on the back of Pearl-2 can be delicate. Be careful to avoid sharp impacts or pressure
such as balancing the system on its back with the SDI ports against a hard surface. Rough
treatment of the SDI ports could result in loss of functionality for that port.



Auto-sensing gigabit Ethernet 10/100/1000 Base-T network port. See

Configure network settings for setup instructions.

6

Pearl-2 User Guide Front and back view Pearl-2

Pearl-2 Rackmount and Pearl-2 Rackmount Twin

Pearl-2 Rackmount Twin consists of two completely independent Pearl-2 systems, each with identical sets of
controls and ports.

Table 3 Pearl-2 Rackmount front panel descriptions

Label Name Description

Touch screen front panel
display

USB3.0 port

3.5 mm audio jack

Used for confidence monitoring and simple configuration, obtaining
system information, and starting/stopping recordings and streams.

Two other USB ports are located on the back. See Record for
information about recording to USBdrives. Web cameras cannot be
connected to this port, only the ports on the rear.

For audio confidence monitoring. Plays the audio for the currently
visible channel.

7

Pearl-2 User Guide Front and back view Pearl-2

Label Name Description

Power button and LED

Press once to power on. Double-press to initiate a graceful system
shutdown.

Pearl-2 Rackmount Twin consists of two completely independent Pearl-2 systems, each with identical sets of
controls and ports.

8

Pearl-2 User Guide Front and back view Pearl-2

Table 4 Pearl-2 Rackmount and Pearl-2 Rackmount Twin back panel descriptions

Label Name Description

Power jack Plug the power supply in here. Always use the provided power supply.

HDMIin Connect HDMI and DVIsignals.

4KHDMIin Connect up to 4K1 HDMI signals.

SDI in Connect SDIsignals.

The four XLR ports can function as two, professional line level
left/right stereo pairs (XLR A pair and XLR B pair) or as four mono

XLRaudio in

inputs, see AV inputs.

The XLR ports are professional line-level inputs and are calibrated for
+ 4.0 dBu signals.

RCA audio in

HDMIOut For displaying a source or channel on an external display (up to 4K1).

USB3.0 ports

RJ-45 Ethernet

1

Requires 4K feature add on

The SDI ports on the back of Pearl-2 can be delicate. Be careful to avoid sharp impacts or pressure
such as balancing the system on its back with the SDI ports against a hard surface. Rough
treatment of the SDI ports could result in loss of functionality for that port.

The RCA ports are consumer line level, left/right stereo pair and are
calibrated for - 10 dBV signals.

For connection of external hard drives, flash drives, USB webcameras,
USB microphones or control interfaces. See Record for recording to a
USBdrive.

Auto-sensing gigabit Ethernet 10/100/1000 Base-T network port. See

Configure network settings for setup instructions.

9

Pearl-2 User Guide What's in the Box?

What's in the Box?

Pearl-2



The standalone Pearl-2 model is shipped in a hard shell case that you can re-use for storing or moving the
system between jobs.Cable storage is located under the custom foam tray that holds Pearl-2 in the case.

Pearl-2 Rackmount

Pearl-2 Rackmount Twin

Inside the box with yourPearl-2 system, you'll find the power cable and the following items. Pearl-2
Rackmount Twin comes with two sets of cables:

1. One SDIcable (3 feet / 1 meter in length)

2. One HDMI cable (3 feet / 1 meter in length)

3. One HDMI to DVI adapter

4. One Ethernet cable

5. One region-specific power supply cable (6 feet / 1.8 meters in length)

10

Pearl-2 User Guide What's in the Box?

Table 5 Cables (power cable not shown)

Image Name Description

SDIcable

HDMI cable

DVI (female) to
HDMI(male)
adapter

Connect SDI sources to the SDI ports
(12G-SDI capable).

Connect HDMI or DVI(using adapter)
sources to the HDMI ports.

Connect DVI sources to the HDMI port.

RJ-45 Ethernet
cable

Connect Pearl-2 to your network.

11

Pearl-2 User Guide Quick start

Quick start

This quick start uses the default settings where possible so you can quickly start using your Pearl-2. The
instructions apply to all Pearl-2 models; however, rackmount installation is not included here, see Rackmount

installation.

For the Pearl-2 Rackmount Twin , you cannot plug a source into one system and use it from the
other.

Before you start, make sure you have:

l A video source such as a camera or a computer and cables to connect them to Pearl-2. For HDMI, the

source must not be HDCPprotected.

l An audio source coming from either your SDI , USB videoorHDMI video source (must not be

encrypted). Optionally, audio from a different source, such as an audio mixer that you connect to the
audio input ports can be used.

l Local area network that uses Dynamic Host Configuration Protocol (DHCP) is preferable.

l Computer with a web browser connected to the same network. We'll call it the “admin” computer.

Starting up!

Pearl-2 is pre-configured with two plug and play channels: Auto A and Auto B. Auto channels are used for this
quick start. They have automatic video sensing, which detects the video signal you connect to the video input
ports on Pearl-2.

The first video source you connect while Pearl-2 is powered on is automatically assigned to the Auto channel
(either Auto A or Auto B, depending in which row you connect the video source). For example, when you first
start Pearl-2, the video sources you connect to the HDMI-A and HDMI-B input ports appear automatically in
Auto A and Auto B channels (respectively). If no video source is connected, a standard No Signal screen
displays.

With auto channels, audio from the connected SDI,HDMI, or USB video source is automatically applied to the
channel without needing any additional configuration. For SDIorHDMI audio, just make sure it's
unencrypted.

The Auto channel's frame size is set to match the video source by default and the best bit rate for the default
frame rate of 30 fps is applied automatically.

For details about Auto channel defaults, behavior, and audio source priorities, see About automatic channels

Auto A and Auto B.

To get started quickly with auto channels:

12

Pearl-2 User Guide Quick start

1. Turn on your camera or video source and connect the output to one of the video input ports labeled

"A" on the back panel of Pearl-2.

2. (Optional) Connect a second video source to one of the video input ports labeled "B".

3. (Optional) Connect audio to the XLR left/right stereo pair audio input ports on the back of Pearl-2 or to

the RCA stereo pair audio input ports.

4. Connect the Ethernet cable to Pearl-2 and to your network.

5. Connect the power cable and plug it into a power source.

6. Press the power button on the front panel to turn on the system. Wait for the power-up cycle to

complete.

The Grid view showing both channels appears on the touch screen. The video source you connected to
the "A" row appears in the Auto A channel, and the video source connected to the "B" row appears in
the Auto B channel.

7. Use the touch screen on Pearl-2 for confidence monitoring. To display the single Channel view, simply

tap on one of the channels that you see in the Grid view. From the Channel view, you can do things like
stop and start recording for the

8. (Optional) Plug headphones or speakers into the 3.5 mm stereo audio jack on the front ofPearl-2 to

monitor the audio.

My network IP address and channel monitoring

You can get the network IP address of your Pearl-2 from the touch screen so that you can do things like view
the channels using a web browser or access the configuration Admin panel. Just make sure that your admin
computer is connected to the same network as Pearl-2.

1. To find the system’s IP address using the touch screentap the gear icon in the bottom right corner of

the screen and select System Status.

13

Pearl-2 User Guide Quick start

2. Using a browser on the admin computer, go to one of the following URLs to preview the channel.

For Auto A:http://<IP Address for Pearl-2>/preview.cgi?channel=1
For Auto B: http://<IP Address for Pearl-2>/preview.cgi?channel=2

For example:http://192.1.10.100/preview.cgi?channel=2

3. (Optional) Open a new tab in your browser and enter the URL to login to the Admin panel.

http://<IP Address for Pearl-2>/admin

For example:http://192.1.10.100/admin

The default user name admin has no password set by default. If a password has been set, consult with your
system administrator for the login credentials, see What is streaming?

14

Pearl-2 User Guide Quick start

Record the channel

The channel is set up and streaming. This may be all you need, but if you like, you can also record the stream.
You can choose to initiate and control channel recording from either the touch screen or the Admin panel.

To control recording from the touch screen:

1. From the Grid view, tap the channel you want to record. The Channel view appears.

2. Tap the red dot to start recording. The record timer starts and continues for as long as the system is

recording. Tap the red dot again to stop recording. If the control icons aren't visible, tap the screen
once.

To control recording using the Admin panel:

1. From the Channels menu in the Admin panel, click Recording for your channel. The Recording page

opens.

2. Click Start to start recording the channel and click Stop to stop recording.

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Pearl-2 User Guide Quick start

3. Refresh the page. Click Recording again in the Channels menu or reload the browser page. The page

reloads and a file list appears that shows your newly recorded content.

4. Click the file name to download and view your recording.

What’s Next?

Now that you have a source setup and are ready to stream, you can fine-tune the system to your exact
requirements. Take a look at topics such as:

l Live video mixing / switching

l Selecting an audio source

l Video output ports

l FTP and automatic file transfers

l Custom layout configuration

l What is streaming?

For higher security, we recommend setting admin, operator and viewer-level passwords on Pearl­2, see Set or change user passwords.

When you're done setting up your Pearl-2, make sure to back up the system configuration using the
procedure described in:Create a configuration preset

l Create a configuration preset

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Pearl-2 User Guide Live video mixing / switching

Live video mixing / switching

Create dynamic content for your viewers to watch while you record and stream your program using Pearl-2.
Using the custom layout editor, you can create different layouts, like picture in picture or side-by-side views of
a camera and slides, then easily switch between layouts with either a tap on the touch screen, using Epiphan
Live on a mobile device, or from the Admin panel.

Your program stream with switched layouts could look like this:

To create a program channel with custom layouts using the custom layout editor that you can switch, see

What is a channel?

For instructions on how to live switch, see:

l Switching / mixing using the touch screen

l Switching / mixing using Epiphan Live

l Switching / mixing using the Admin panel

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Pearl-2 User Guide Monitoring audio

Monitoring audio

Pearl-2's front panel includes a 3.5 mm audio jack for monitoring audio. You can plug external speakers or
headphones into the 3.5 mm audio jack. To monitor the audio for a channel, just select the channel using the
touch screen. The audio you hear depends on which layout is currently live because different layouts can have
different audio sources configured.

Adjust the volume

Tap the headphones icon on the touch screen to adjust the volume. Each tap increases the volume by 25% to
a maximum volume of 100%. Tapping the headphones icon when the volume is at 100% mutes the volume.
You can also long press the headphones icon to mute and unmute the volume.

Volume is muted.

25%

volume.

50%

volume.

75%

volume.

100%

volume.

At 75% volume, what you hear corresponds to the nominal audio level in the VU meter at approximately
where the green bars change to yellow. Increasing the volume to 100% may cause you to hear distortion that
is not actually present in the audio signal being recorded and streamed.

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