Oton Geek S08 Series User manual

8 Channel SDI/HDMI Live Streaming Switcher
User manual _v1.0

Introduction
Thank you very much for using our portable broadcast platform products!please read the manual
carefully before using this product.
This manual describes in detail the functions, installation and operation of the portable
broadcast station general principles or methods.
This series of portable broadcast station is a high performance, multi - function product of live
broadcast switching station.
This manual is applicable to portable broadcast station series products.
Warnings and Precautions
1. Read all of these warnings and save them for later reference.
2. Follow all warnings and instructions marked on this unit.
3. Unplug this unit from the wall outlet before cleaning. Do not use liquid or aerosol cleaners. Use a
damp cloth for cleaning.
4. Do not use this unit in or near water.
5. Do not place this unit on an unstable cart, stand, or table. The unit may fall, causing serious
damage.
6. Slots and openings on the cabinet top, back, and bottom are provided for ventilation. To ensure safe
and reliable operation of this unit, and to protect it from overheating, do not block or cover these
openings. Do not place this unit on a bed, sofa, rug, or similar surface, as the ventilation openings on
the bottom of the cabinet will be blocked. This unit should never be placed near or over a heat register
or radiator. This unit should not be placed in a built-in installation unless proper ventilation is
provided.
7. This product should only be operated from the type of power source indicated on the marking label
of the AC adapter. If you are not sure of the type of power available, consult our local dealer or your
local power company.
8. Do not allow anything to rest on the power cord. Do not locate this unit where the power cord will be
walked on, rolled over, or otherwise stressed.
9. If an extension cord must be used with this unit, make sure that the total of the ampere ratings on
the products plugged into the extension cord do not exceed the extension cord rating.
10. Make sure that the total amperes of all the units that are plugged into a single wall outlet do not
exceed 15 amperes.
11. Never push objects of any kind into this unit through the cabinet ventilation slots, as they may
touch dangerous voltage points or short out parts that could result in risk of fire or electric shock.
Never spill liquid of any kind onto or into this unit.
12. Except as specifically explained elsewhere in this manual, do not attempt to service this product
yourself. Opening or removing covers that are marked “Do Not Remove” may expose you to dangerous
voltage points or other risks, and will void your warranty. Refer all service issues to qualified service
personnel.
13. Unplug this product from the wall outlet and refer to qualified service personnel under the
following conditions:
a. When the power cord is damaged or frayed;
b. When liquid has spilled into the unit;
c. When the product has been exposed to rain or water;
d. When the product does not operate normally under normal operating conditions. Adjust only
those controls that are covered by the operating instructions in this manual; improper adjustment of

other controls may result in damage to the unit and may often require extensive work by a qualified
technician to restore the unit to normal operation;
e. When the product has been dropped or the cabinet has been damaged;
f. When the product exhibits a distinct change in performance, indicating a need for service.
Warranty Terms
For products purchased through resellers and distributors, please refer to the return policy of the
merchant from whom it was initially purchased; any products eligible for return or replacement through
the original merchant should be submitted through them. We will only accept direct return of a product for
replacement, under the stated warranty service after the original return time frame of place of purchase
has expired.
Standard Warranty
* Oton equipment is guaranteed against any manufacturing defects for one year for limited parts and
labor from the date of purchase.
* Oton equipment is guaranteed against any manufacturing defects for one year for limited parts and
labor from the date of purchase.
* The original purchase invoice or other documentary evidence should be supplied at the time of any
request for repair under warranty.
* The product warranty period beings on the purchase date. If the purchase date is unknown, the product
warranty period begins on the thirtieth day after shipment from Oton office.
* Warranty only valid in the country or region of purchase.
* Shipping expenses are at Oton for any delivery claim - you get a defective piece at box just opened.
What Is Not Covered
It is important to note that our warranty is not an unconditional guarantee for the duration of the Program.
Any replaced parts become the property of manufacturer. The Program does not apply to the software
component of a product or a product which has been damaged due to accident, misuse, abuse, improper
installation, usage not in accordance with product specifications and instructions, natural or personal
disaster, or unauthorized alterations, repairs or modifications.
The Program Does Not Cover Any Events Such As:
A. Any damages unrelated to manufacturing defects
B. Any unsuitable environment or use of the product, as determined by manufacturer
C. Any product which has been modified without official permission from manufacturer, or on which the
serial number or warranty sticker has been defaced, modified, or removed
D. Damage, deterioration or malfunction resulting from:
* Accident, abuse, misuse, neglect, fire, water, lightning, or other acts of god, commercial or industrial
use, unauthorized product modification or failure to follow instructions included with the product
* Third party products using manufacturer components will not be covered by warranty.
* Any shipment damages (claims MUST be made with the carrier)
* Unauthorized repairs to the product will void the warranty
Manufacturer reserves the right to refuse to service any product which has been altered, modified or
repaired by any non-authorized personnel.

Table of Content
Overview..................................................................................................................................................................................1
Key Features...........................................................................................................................................................................1
Technical Specification...................................................................................................................................................... 2
Panel Mapping......................................................................................................................................................................3
Using Multiview....................................................................................................................................................................6
Getting Started.....................................................................................................................................................................9
* Cable Connection......................................................................................................................................................9
* Loading stills or video from USB drive..................................................................................................................9
* Configuration for Video Decoding..........................................................................................................................9
Connecting the Switcher to Web Page........................................................................................................................... 10
* Connecting to a Network-Auto Recognition of IP Address...............................................................................10
* Connecting to a Network - Manually Setting a Fixed IP Address....................................................................10
Switching Your Production................................................................................................................................................ 11
* Switching sources using numbered PGM button.............................................................................................. 11
* Switching sources using numbered PVW button + Cut button.......................................................................11
* Switching sources using transition.................................................................................................................... 12
Using PIP & POP..................................................................................................................................................................12
Chroma Key..........................................................................................................................................................................13
Adding Logo......................................................................................................................................................................... 14
Adding Subtitles................................................................................................................................................................. 15
Controlling Audio................................................................................................................................................................15
Switching Between Horizontal Video & Vertical Video................................................................................................ 17
Live Streaming via Ethernet Port..................................................................................................................................... 17
Recording Your Video.........................................................................................................................................................18
Tally Diagram.......................................................................................................................................................................18
Host Configuration.............................................................................................................................................................19
* Change password................................................................................................................................................... 20
* Change device IP address..................................................................................................................................... 20
* Synchronize device time with your local time................................................................................................... 21
* System Update.........................................................................................................................................................21

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Overview
Oton Geek S08 series SDI HDMI live stream video mixer can switch up to 8 different video inputs
(4xSDI + 2 x HDMI + 2 x IP Stream. The input format will be auto-detected by the switcher, and the
output format is selectable by the user. The multiview layout allows you to show preview, program,
and input sources all on the same screen with adjustable PIP & POP functionality. Users can also add
their brand logo and subtitle to PGM video for a more stunning live production. You can even record
up to 1080p60 to USB drive in the built-in USB2.0/3.0 port. In addition to the program and multiview
preview outputs, the switcher can also live stream to 4 destinations at the same time such as
Facebook, Youtube, Ustream via Ethernet, without requiring additional hardware. Concert productions,
events, parties, competitions, educational institutions, and live sports programming are some of the
use cases where the Geek S08 series could be utilized.
Key Features
* Input: SDIx4, HDMIx2, IP Stream x2, RCAx2, 3,5mmx2
* Output: 2xSDI PGM, 1xHDMI PGM, 1xHDMI Multiview, 2xIP Stream, 2xRCA, 1xTally
*Multiview: timing, USB storage status, PGM format, recording status, on air status, networking status,
PVW video, PGM video, switching effect, PIP effect, subtitle, audio level
* Multiview screen size - 15.6 inch (Geek S08M Only)
* Max Resolution 1080p @60Hz
* Support horizontal video and vertical video
* Support 12 styles super source PIP
* Support cut direct switching, mix transition and auto transition switching
* Support Mix/Fade/Wipe effect
* Support add 2 logos and 20 subtitles to your video
* Support full color Chroma Key for virtual production
* Built-in H.264 encoding and decoding

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* Support multistream to 4 service platforms at the same time
* Simultaneous record PGM Video to USB Drive
* support external 4G wireless dongle for alternative network connection
* Support EMB(Emergency) Mode
* Support tally indication for camera status
Technical Specification
Connections
Video Source
4xSDI, 2xHDMI, 2X decoding stream video/USB media file
Video Output
2x SDI PGM out, 1xHDMI PGM out, 1xHDMI Multiview out
Audio Source
1x3.5mm, 1 pair R/L audio
Audio Output
1x3.5mm, 1 pair R/L audio
USB 2.0 port
Recording, load local Stills or videos, connect 4G Wireless dongle
USB 3.0 Port
Recording, load local Stills or videos, connect 4G Wireless dongle
NMS
Web management
RJ45
10/100/1000Mb/s, live streaming & video decoding
Tally
DB-9, tally light indication
RST
Reset
Sys
For manufacturer use only
A/V Standard
Input Resolution
576i50, 720P50, 720P60, 1080i50, 1080i59, 1080i60, 1080P25,
1080P30, 1080P50, 1080P60
Output Resolution
Program resolution: 1080i50, 1080i59, 1080i60, 1080P25,
1080P30, 1080P50, 1080P60
Multiview resolution: 1080P60
Video Format
16:9 & 9:16
Audio Level
-40dB~0dB
Sampling
48kHz
Audio Format
AAC
A/V Switching
Video Switching
Cut Direct Switching & Take Transitional Switching
Effects
Fade, Mix, Wipe, PIP, POP
Transitional Rate
0.5s-5s adjustable
Audio Control
On/Off/Reset/Follow Video
Video Decoding
Format
H.264
Resolution
1920x1080
Protocol
HTTP-TS, RTS, HLS, FLV, RTMP
Live Streaming
Format
H.264
Resolution
1920×1080
Bit Rate
500-40960kbps adjustable
Protocol
RTMP, RTMPS
Multi-stream
4 platforms at the same time

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Video Recording
Channel
1x Program Video
Recording Duration
Depends on the capacity of USB disk and recording bitrate
10240 kbps (13.6 mins /GB) – default
40960kbps (3.4 mins/GB) – max
Recording Bit Rate
500-40960kbps adjustable
Resolution
1920×1080
Video Format
MP4
USB Media File
USB Disk Format
FAT32, NTSF, EXFAT
Graphic Format
PNG, BMP, TGA, JPG (suggested file size<1MB)
Video Format
MP4, MKV
Power Requirement
Voltage
12V
Current
3A max
Consumption
36W max
Environment
Operating Temperature
-20℃~40℃(-4°F – 104° F)
Storage Temperature
-20℃~60℃(-4°F – 140° F)
Operating Humidity
0% to 90% non-condensing
Storage Humidity
0% to 90% non-condensing
Physical Specification
Product Dimension
Geek S08- 36x18x5.3cm
Geek S08M - 38X26.5X7cm
Product Weight
Geek S08 - 2.11kgs
Geek S08M - 5.42kgs
What’s Included
Package Content
1x HDMI Switcher
1x 12V 3A DC Power Adapter
1x Warranty Card
1x User Manual
Panel Mapping
Front Panel

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Icon
Function
Description
Numbered
video sources
program and
preview status
control
Simply press the numbered buttons
to selected preview or program sources.
red color refers to program status, green
color refers to preview status
1-4: SDI Sources
5-6: HDMI Sources
7-8: decoding video or USB media
T-Bar
Transitional Switching controller
Transitional
Switching
Take button lets you smoothly switch
from one source to another over a
defined duration.
Direct
Switching
Cut button lets you switch among video
sources without any effects
Menu
Press the button to enter or exit manual
Knob
Rotate the button to select different
options, then press the SET button to
confirm your selection
Audio Control
Push up and down to increase or
decrease volume
PIP & POP
Aux Picture in Picture & Picture outside
of Picture, can be configured at web
backend. Press the corresponding button
to enable PIP and POP, press again to
disable the function

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Add Subtitle
SUB1: Vertical subtitle
SUB2: Horizontal subtitle
Tips: vertical subtitle supports
Chinese only.
Transition
Effects
Press the corresponding button to select
transition Effects, you can configure the
effects in MENU or web-based page.
Logo
Press the button to enable adding logo to
your live video, press again to disable it
Recording
Press the button to enable recording
program video to your USB drive
Live
Streaming
Press the button to enable start live your
video on air, press again to disable the
function.
Emergency
Press EMB button will stop the live
streaming, an emergency signal will
show on the program screen, to fade up
from black, simplely press it again.
Rear Panel Description
Icon
Function
Description
Video Source
The switchers allows to connect 4
independent SDI and 2 HDMI cameras or
computers.
SDI &HDMI PGM out &
Multiview Output
Display the video that are currently on air
to big screen for PGM out. The multiview
Allows to see all video sources, preview,
program, time, audio level, live streaming
status, recording status, network status
in same screen.
External Audio Inputs
Supports 1x3.5mm audio and 1 pair R/L
audio in, with mic in or line in adjustable
at web backend.
Audio Output
Supports 1x3.5mm audio and 1 pair R/L
audio out for monitoring.

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USB 2.0 &USB 3.0 Port
* Load the stills or video in USB Drive
* Recording program video to USB drive
* Connect 5G wireless dongle for
alternative network connection（HUAWEI
E3372 suggested )
NMS
Web management
RJ45 Port
1000Mb/s
Live streaming & Video decoding
Tally Indication
Tally indication let you know which
camera PVW/PGM status
Reset
Stick the button for 10 seconds to reset
factory settings after power off.
System Update
For manufacturer use only
Power Switcher
Press to turn on/off the switcher
Power Cord
Connect 12V DC power adapter to the
switcher.
Using Multiview
The multiview is a powerful feature that lets you monitor the 8 inputs, together with the program and
preview outputs as a group of views on one screen. The multiview also displays the media player,
streaming status, disk recording status, audio levels, logo, subtitle and other dynamics
indicators.This feature provides a comprehensive overview so you will always know exactly what is
happening with your broadcast!
Below is a description of each view.

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Preview: The preview lets you monitor the source currently switched to the preview output. This view is
helpful to practice switching between sources, so you can see what it will look like before switching to
the program output. You need to change the switcher operation to program or preview switching to
make use of the preview view.
Program: The program view displays what is currently switched to the program output. This view will
always show exactly what you are broadcasting.
Input Views: The input views display all the sources connected to the inputs. Having all 8 inputs on
the multiview lets you see the image from every camera so you can make quick decisions. However
they don’t always have to be cameras as you could also have a computer’s video output connected to
the switcher’s inputs and you can monitor them in the input views too.When an input is switched to
the preview or program output, a green or red tally border will appear around the input’s respective
view. Green represents the preview output and red represents the program output, or ‘on air’, while
yellow represents the source is selected for both preview output and program output.
Audio Status: During your broadcast you can monitor the audio levels for each source and the levels
of the preview and program output using the audio view. The audio meter will shake with different

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volume. If the audio level rises above 54dB the meter will illuminate red to warn you that it is close to
the maximum strength of 60dB.
Tips:
1. 0-42dB: green color, 42-54bB, yellow color, 54-60dB red color
2. refers to audio is active permanently, refers to audio is following video, refers to audio
is inactive even if the source is on air.
Time: it displays the current time for the device. You may synchronize your local time with device time
at web back end.
Logos & Titles: it overlays your/your sponsor’s logo and subtitles on the program output
Live Streaming View: The view displays live streaming status and duration counter, when it shows
NET:Internet or NET:Internet(4G), it means the network is successfully connected and you can start
streaming.

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Recording View: the view displays recording status, duration counter and USB drive capacity. When
USB drive is connected and start recording, the REC indicator turn to red and duration counter starts
to work, you can also see how much disk space is left, when the capacity is less than 300MB, the
switcher will stop recording.
Getting Started
The switcher might seem intimidating with all the connectors and buttons, however the unit is
actually very easy to set up and use. Each feature serves a specific function and it won’t take long to
get familiar with it and know exactly what each feature does.This section of the manual will show you
how to get started with your switcher.
* Cable Connection
1. Plug in power using the supplied power adapter.
2. Connect your video sources to the inputs of video switcher via SDI or HDMI Cable
3. Connect your monitor to the PGM/multiview outputs of video switcher via SDI/ HDMI Cable
4. Connect your microphone/audio mixer to the audio inputs and connect yoru audio monitoring
device to the audio output
5. Connect your computer to the NMS port of switcher via Ethernet cable.
6. Plug in USB drive if would like to record your video too
* Loading stills or video from USB drive
1. Create a folder named play in your USB drive
2. Put all needed stills and videos to the play folder
3. Plug in your USB drive to the switcher via USB3.0 port
4. Press the Menu button, rotate the SET button to select input 7 or 8 to choose needed
stills/videos, then press SET button to confirm your selection.
Tips: 1. Supported still image format: PNG, BMP, TGA, JPG
2. Supported video format : MKV, MP4
* Configuration for Video Decoding
The decoding video address usually comes from an IP camera or video encoder.
IP Camera
1. please consult with your camera manufacturer for the address format, the format varies from
manufactures.Taking our C7 as example, the format is rtsp://ip address /live/av0, so it’s decoding
address would be rtsp://192.168.5.163./live/av0
2. Copy rtsp://192.168.5.163./live/av to the address column in input stream preset section of web
page and click Apply

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3. Select the input for channel 7 or 8 on panel
4. You can see it shows in channel 7/8.
Video Encoder
1. Please log in the backend of your encoder and find it’s decoding address, you can paste either
address below, supported protocol: HTTP-TS, RTS, HLS, FLV, RTMP
5. Paste the address to the address column in input stream preset section of web page and click
Apply
3.Select the input for channel 7 or 8 on panel.
4.You can see it shows in channel 7/8.
Note: supported protocol: HTTP-TS, RTS, HLS, FLV, RTMP
Connecting the Switcher to Web Page
* Connecting to a Network-Auto Recognition of IP Address
Step 1: Connect the switcher with router or IP Switcher with Ethernet cable
Step 2: you will see 2 IP addresses on the multiview screen
Step 3: open your browser and input either the ip address the switcher obtained from your router or
the default ip address for the switcher 172.16.161.106
Step 4: log in with default account and password
Default account: admin, default password: admin
* Connecting to a Network - Manually Setting a Fixed IP Address
When setting IP addresses manually so all units can communicate, they must share the same subnet
mask and gateway settings. In addition, the first three fields of numbers in the panel’s IP address
also need to match. For example, default IP address of the HDMI Switcher is 172.16.161.106 and in order
to communicate with switcher, IP address of your computer will be set as 172.16.161.xxx (0-255). This

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means both units share the first three fields of numbers, but have their own identifying number in
the last field so they won’t conflict with each other. This is generally the most important principle to
know when working via Ethernet.
Windows System
1. Connect your computer to the NMS port on switcher
2. Enter the ‘control panel’ of your computer, click ‘network and internet settings’
3. Click ‘change connection properties
4. Click ‘Ethernet’ in the left side menu
5. Right-click Ethernet network, select ‘Properties’ in the drop list.
6. Select TCP/IPv4, then click OK.
7. Select ‘Use the following IP address’ and input IP address, subnet mask and default gateway, then
click OK at the bottom. You are now have your network configured.
Tips: Default IP address for the video switcher is 172.16.161.106.
iOS System
1. Click the Apple icon then select the System Preferences… option.
2. Under Internet & Wireless, select Network.
3. Click the Advanced… …
4. Click TCP/IP.
5. From the Configure IPv4 drop-down list, select Manually.
6. Enter your IP settings in the required fields.
7. Click OK
Switching Your Production
Now that you have your everything connected, the switcher is ready to start switching your
production. This happens when you switch from one video source in your broadcast to another. source
1-4 can be any SDI video signal connected to the SDI inputs, source 5-6 can be any HDMI video signal
connected to the HDMI inputs like cameras, computers, game consoles etc. You can even load stills
and video from the USB media pool. With the Switcher, you can switch cleanly using professional cuts
or transitions. For example, a cut will instantly change from one source to another and a transition
will change sources over a defined duration often using an effect.
* Switching sources using numbered PGM button
Simply press the numbered button under PGM (red color), it will switch directly
* Switching sources using numbered PVW button + Cut button
Simply select the numbered source for PVW(green color), then press CUT button. A cut will instantly
change from one source to another without effects.

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* Switching sources using transition
Transitions let you smoothly switch from one source to another over a defined duration. For example,
a mix transition gradually fades the current source into the next until the original source is no longer
visible. A wipe transition will move a line across the original source revealing another effectively
wiping across the image.
To perform a transition:
1.select the numbered sources for preview
2.Press FX1/FX2/FX3/FX4 for different styles of
transition,
3.Press TAKE button tell the switcher you want an
automated transition, you can use the T-Bar to control
transition speed.
Tips: FX1-4 are aux transition effects, you can configure
each at web back end or Press MENU button for quick
configuration.
Using PIP & POP
Picture in picture(PIP) superimposes a second source over your broadcast video source in a small box
you can position and customize. Picture outside of picture(POP) enables you to see the 2 images side
by side.
To enable PIP & POP:
1 Preset PIP styles for PIP1/2/3/4 at web backend, add image for PIP background if needed, Click
Application Setting > PIP Set
2. Press MENU button and Select the video for each window (can be any one from the 8 sources)
PIP-A - main video, PIP-B/C/D, small windows.

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3 Select the needed transition effects if you need
4 Press PIP1/2/3/4 to enable PIP, then Press TAKE Button. You will now see the picture in picture
box appear on the screen. To select a different position, press any of the position buttons. For PIP/POP
without transition effects, you an also press CUT button for switching.
Chroma Key
Chroma key is mostly used in virtual production like weather broadcast. In a chroma key two
images are combined using a special technique and a color from one image is removed, revealing
another image behind it. This technique is also referred to as color keying, color seperation overlay,
green screen or blue screen.
A very common use for chroma key is computer generated graphics. It’s simple to connect an external
computer to the switcher via HDMI port. If you render a green or blue background on your animations,
you can then key this green or blue to create fast and clean animations of any length. Keying is easy
as the green/blue is computer generated so they are very flat colors to key.
Background
A full screen image; in the case of a chroma key it is often a weather map
Fill
The image you plan to display on top of your background video. In the case of a chroma key,
this is video of the meteorologist in front of the green screen.
Key/Cut
In the case of a chroma key the key/cut signal is generated from the fill signal.
Performing a chroma key
Oton Geek S08 series features an advanced chroma keyer with user friendly adjustment
options. These controls help you achieve the best key, improving the blend of foreground and
background so you can create a more convincing visual effect.

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1. Select background and fill source
2. Log in web back end, select Application settings > PIP Buttons Preset, Select Key for PIP1/2/3/4 and
click Apply or you can press MENU button and configure the KEY to PIP1/2/3/4, then press SET button.
3. Select Color Key, choose color mode, LAB mode is suggested.
4. Choose a representative area of your green/blue screen that covers as much of the luminance range of
the screen as possible by dragging the slider or input numbers of Ref X and Ref Y
5. Press the corresponding PIP button to enable keying.
Fine Tuning your key by adjusting Scale
Once you have achieved a good chroma sample that removes most of your green screen while generally
retaining foreground elements, its time fine tune your key with the ‘scale’controls. (see above image). The
“scale”sliders move the edge of your keyed area in or out, helping to remove background elements from
the very edge of your foreground or extending the foreground out a little if your key is too aggressive. This
can be especially useful with fine details like hair. We recommend moving this slider until the edge of your
key is generally clean, without any background artifacts visible. Using the scale controls, your foreground
elements should be cleanly separated from the background.
Note - L for Brightness, A for Green and Red, B for blue and yellow.
For example if you are using green background, then simply adjust A, if you are using blue
background, simply adjust B
.
Adding Logo
Geek S08 models allow you to store unlimited logos at web back end and load 2 of them on air at the
same time! You can get 1 of your brand logo sitting on the upper right corner, the other sitting at the
lower left corner, as a trick for lower thirds! Just use photoshop to create lower third in PNG file and
get it on air.
To add your logo:
1.Upload your logo at the back end.
2.Simply press the LOGO button on the panel to enable this function, you will see your logo shown on
the screen, press again to disable it.

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Tips: Logo Image Format: PNG, BMP, TGA, JPG (PNG recommended)
Image Size:<1MB, 200Kb recommended
Press MENU button for quick logo selection.
Adding Subtitles
The switcher supports Horizontal subtitle and vertical subtitle(Chinese language only), size, color,
font and location adjustable. You can preset 10 sets subtitle in advance. To add subtitle to your video,
1. Preset subtitles at the back end and click Apply.
2. Press MENU button on the panel and select needed subtitle
3. Press SUB 1/2 button to enable the function
4. You will now see the subtitle on the screen, press SUB again to disable the function
Tips: Subtitle position is adjustable between X-axis [0,1920] and Y-axis [0,1080], and the font size is
adjustable between [20,100]
Controlling Audio
When setting up your production or during your broadcast, you will likely want to control audio levels
if the sound is too quiet or too loud. Push up and down the audio controller will increase or decrease
the audio level for the respective source. Or you may likely to have one of the channel audio to be
heard permanently or never be heard or follow channel video.

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Tips: 1.The ‘ON’ button contains different audio controls: AFV(default), Audio on and Audio Off,
press the button to switch between them.
AUDIO 1 – audio for each channel
ON – When the input’s audio is set to ‘on’, the input audio will be heard permanently,even if the
source is not currently on air.
OFF – When the input’s audio is set to ‘off’, the source audio will never be heard even if the source
is currently on air.
Follow - stands for ‘audio follows video’ and will let the audio for a respective input be heard
whenever the source is switched on air. (light in orange when the corresponding source is selected)
For audio out, you can select between R/L, R=L,L=R and R+L
R/L– you will hear a stereo audio
R=L– you will hear the audio from left channel only
L=R– you will hear the audio from right channel only
R+L– you will hear a mono audio
Gradient - when Gradient is on, the audio will slowly fade when you doing switching.
Audio 2 - External audio device you connected, like microphone or audio mixer.
Gain - input level of the clips
Delay - usually audio goes faster than video so it sometimes generate problem like the audio and
viedo can’t sync. In this way you can adjust the audio delay to make them sync.