Blackmagic Web Presenter Manuale utente

Blackmagic

Web Presenter

Blackmagic Web Presenter

September 2023

Installation and Operation Manual

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contents below.

English 3

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Welcome

Thank you for purchasing your Blackmagic Web Presenter!

Blackmagic Web Presenter plugs directly into any SDI equipment, converts the signal

into H.264 and lets you stream it on popular streaming services such as YouTube Live,

Facebook Live and Twitch. You can also transmit broadcast quality video point to point

using an optional ATEM Streaming Bridge. This makes transmission of professional

videotoremote locations easy using the internet!

This instruction manual shows you everything you need to know to get started with

Blackmagic Web Presenter and how to use all the features and controls, including how

toseteverything up for YouTube Live, Facebook Live, Twitch, Zoom, Skype and more.

Check the support page on our website at www.blackmagicdesign.com for the latest

version of this manual and for updates to your Blackmagic Web Presenter’s internal

software. When downloading the software, be sure to register with your information

sowecan keep you updated when new software is released.

We are continually working on new features and improvements, so we are keen

hear from you!

Grant Petty

CEO Blackmagic Design

English

Contents

Getting Started 5

Using Web Presenter’s Front Panel 8

LCD Display 9

Using the Monitor Output 10

Using Web Presenter Setup 15

Live Stream Tab 16

Setup Tab 19

Network Settings 20

Setting Internet Sharing forDirectStreaming 20

Streaming Using Your Smartphone 21

Using Blackmagic Web Presenter as a Webcam 21

Setting up Open Broadcaster 21

Creating Video Links with ATEM Streaming Bridge 24

Creating the XML File 25

Exporting the XML File 25

Tally, Talkback and Camera Control 26

Connecting URSA Broadcast G2 27

Blackmagic Universal Rack Shelf 28

Contents 28

Mounting a Unit to the Rack Shelf 29

Attaching the 1/6 Blanking Panel 29

Attaching the Side 1/3 Width Blanking Panel 29

Updating the Internal Software 30

Developer Information 31

Blackmagic Web Presenter Ethernet Protocol 31

Protocol Blocks 33

Blackmagic Streaming XML Format 44

Overview 44

Streaming XML Deﬁnition 44

Help 51

Regulatory Notices 52

Safety Information 53

Warranty 54

4Blackmagic Web Presenter

Getting Started

Getting started with your Blackmagic Web Presenter is quick and easy! All you need to do

isconnect power, connect video and audio, connect the unit to your computer, then connect

tothe internet.

Blackmagic Web Presenter front panel

Connecting Power

Plug a standard IEC power cable into your Blackmagic Web Presenter’s powerinput on the

rear panel.

Blackmagic Web Presenter can be powered using the IEC or 12V DC power input

Web Presenter also has an additional 12V DC power input. You can use this input if you want

toconnect external power or redundancy via an external power supply, for example a UPS

orexternal 12V battery.

Connecting Video and Audio

Plug your video source into Blackmagic Web Presenter’s SDI input. When video is connected

itwill be displayed on your web presenter’s built in LCD. Audio is embedded with the video

onthe SDI video signal and you can confirm it by observing the audio meters on the LCD.

Connect video to your Blackmagic Web Presenter’s SDI input

Blackmagic Web Presenter supports 12G-SDI and will automatically switch between HD

and Ultra HD all the way up to 2160p60 when the video input changes. While Blackmagic

WebPresenter4K can stream in Ultra HD, Blackmagic Web PresenterHD will take virtually

anyvideo signal and convert down to 1080p.

5Getting Started

Connecting a Monitor

Plug your HDMI television or SDI monitor into one of the monitor outputs. This lets you monitor

your broadcast and observe important status information that updates constantly with your

video stream. For more information on how to use the monitor output, refer to the ‘Using the

Monitor Output’ section.

Connect a monitor to your web presenter’s monitor output

Connecting to a Computer via USB

Connect your Web Presenter to your computer using the USB-C port on the front or rear panel.

These USB ports are used for updating the unit and configuring it with the Blackmagic Web

Presenter Setup utility. Once you have configured your Web Presenter for the first time, you can

then disconnect the unit from the computer.

Connect your Blackmagic Web Presenter to your computer using the USB port

on the front or rear panel

Connecting to the Internet

Connect your Blackmagic Web Presenter to the internet by plugging a network cable from

the‘live stream’ Ethernet port to an internet router or a network switch.

Connect your Blackmagic Web Presenter to your network via the Ethernet port

on the rear panel

6Getting Started

Setting up a Live Stream

You can now set up your Web Presenter to stream via any streaming platform such as

YouTube Live, Facebook Live, Twitch and more. For this example, we will set up for a YouTube

Live stream.

1 Copy your stream key from your YouTube Studio account.

2 Download the Blackmagic Web Presenter Setup utility from

www.blackmagicdesign.com/support and install it on your computer.

This software lets you configure streaming settings for the first time.

3 Launch the Blackmagic Web Presenter Setup utility and go to the ‘live stream’ page.

4 Set the platform to YouTube and the server to ‘primary’. Paste your YouTube stream key into

the ‘key’ field and select a streaming quality. Click ‘save’.

5 You’re now ready to start streaming to the world! Click the ‘on air’ button or press the ‘on

air’ button on the unit’s front panel. When your production has finished, press the ‘off’

button to stop your broadcast.

Using the SRT Streaming Protocol

The secure reliable transport protocol, or SRT, provides lower latency streaming when

compared to RTMP. SRT also improves security by using a passphrase, which is like an

encryption key.

When selecting the SRT protocol version of your streaming service, copy the passphrase and

stream key from your streaming account and paste them into the ‘key’ and ‘passphrase’ fields of

Blackmagic Web Presenter Setup utility.

Paste your passphrase into the ‘passphrase’ field of setup utility

Both the protocol RTMP or SRT as well as the codec H.264 or H.265 can be changed in the

XML file if technically experienced broadcasters want to customize streaming settings. For

more information, refer to the ‘Blackmagic Streaming XML Format’ section.

7Getting Started

Using Web Presenter’s Front Panel

Use Blackmagic Web Presenter’s front panel controls to start and stop streaming and

change settings.

On Air - To start streaming, simply press the ‘on air’ button. The button will highlight red while

streaming on air.

If the on air button flashes, it means a live stream has failed to start, or has stopped unexpectedly.

This might be due to a problem with your internet connection or streaming settings. Check that

your internet connection is working and your streaming settings are correct.

Off - To stop streaming, press the ‘off’ button.

Menu - Press the menu button to open the settings on the LCD.

To change a setting:

1 Rotate the knob to select the setting you want to change, then press ‘set’.

8Using Web Presenter’s Front Panel

2 Rotate the knob to change your setting.

3 Press ‘set’ again to confirm the change.

Press the menu button to step back through the menu items and return to the home screen.

Call - This feature will be enabled in a future update.

Lock - Press and hold this button for 1 second to lock the panel. This disables the buttons,

preventing anyone from accidentally going on air or stopping a stream. The button will

illuminate red when active.

Press and hold for 2 seconds to unlock the panel.

LCD Display

The home screen is the first feature you’ll see when you power up your Web Presenter.

The home screen displays important information, including:

Cache – Showsthe

percentage of your Web

Presenter’s built in memory

cache that is currently in use.

Data Rate – Shows

the data rate of the

encoder whether or

not your WebPresenter

is streaming. You can

connect your video

source to an input and

quickly see the bit rate

required to stream

your live video feed.

Video Monitor – Displays the input video source

that is connected to your Web Presenter.

Audio Meters – Displays

the audio levels of the

video source connected

to your Web Presenter.

Duration Counter – Shows the

current duration of your live

stream. The counter will start when

you press the ‘on air’ button.

Internet Connection –

Asmall icon is displayed

whenyour Web Presenter is

connected to the network.

On Air Status – A bright red on

air indicator will be displayed

when your live stream is running.

When the unit is standing by

ready to start streaming ‘off’ will

be displayed. Aflashing red and

white on air indicator means that

there has been an interruption

during the stream, such as a

slow internet connection.

9Using Web Presenter’s Front Panel

Internet Connection Icons

A blue Ethernet icon is displayed when an Ethernet cable is connected and the

Ethernetconnection will be used for streaming.

A red Ethernet icon is displayed when on air and streaming via Ethernet.

A blue smartphone icon is displayed when a tethered smartphone’s internet

connectionwill be used for streaming.

A red smartphone icon is displayed when on air and streaming via a tethered

smartphone.

TIP If no icon is displayed then your Web Presenter is not connected to the network.

Using the Monitor Output

The monitor output lets you monitor the video input, audio levels, on air status, data rate and

cache levels, plus technical information about the SDI input.

The monitor out on Blackmagic Web Presenter provides comprehensive information including

data rate and cache status

10Using the Monitor Output

The monitor output display is made up of 8 panels. Below is a description of each panel and the

information it displays.

Input View

The main panel displays your current video input from the connected SDI video source.

On Air Status

Prior to streaming, the on air status indicator will display ‘off’ to let you know Web Presenter is

standing by and ready to broadcast. When streaming begins, theindicator will display a bright

red ‘on air’ status until streaming is stopped.

Underneath the on air indicator is the duration counter. When you press the on air button on

your Web Presenter, the duration counter will start running.

If your Web Presenter is off air but will stream via a tethered smartphone, the ‘off’ indicator

includes a blue smartphone icon in the corner. When on air, the smartphone icon will

illuminate red.

Live Stream

The live stream panel displays information about your live stream settings. This includes

the streaming platform, server and protocol. It also displays the stream resolution and

quality settings.

11Using the Monitor Output

Video Input

The 5 mini viewers at the top of the video input panel show the previous 6 seconds of your live

stream, each mini viewer represents 1.2 seconds of streaming time.

Below the mini viewers you can view detailed technical information about the video input

source connected to your Web Presenter’s SDI input.

Input Standard Displays the resolution and frame rate of the SDI video input. Web Presenter

supports up to 2160p60.

Colorimetry Shows the color space of the SDI video input. Web Presenter supports

Rec.601, Rec.709 and Rec.2020 color spaces.

SDI Ancillary Data Ancillary data is data carried in the SDI video input that is in addition to

video. This includes embedded audio, timecode and closed captions.

If your SDI input includes ancillary data then ‘Present’ will be displayed.

Timecode Displays the timecode from the SDI video input source.

Closed Captions If your SDI video input includes Closed Captions the format will be displayed

here. CEA-608 and CEA-708 formats are supported.

SMPTE 292 CRC This is an error checking function for SDI video. If your Web Presenter

detects a problem in the SDI video input it will display an error.

CRC errors are usually caused by a faulty SDI cable or a cable that is

too long.

Luminance Y Bits

and Chroma Bits

The indicators for ‘luminance y bits’ and ‘chroma bits’ show you the activity

of the SDI video input signal. Each letter represents the state of one bit of

the video signal.

X - An ‘X’ indicates a constantly changing bit.

L - A low bit.

H - A high bit.

SDI offsets are subtracted to make it easy to understand. For example,

all bits are low when video is black.

Generally, all 10 bits for your SDI video input will show ‘X’ to mean all the bits

on your video stream are changing constantly. If your SDI input is 8 bit video,

the two rightmost bits will always be ‘L’ as they don’t have any data. If a bit

stays ‘L’ or ‘H’ when you expect itto be ‘X’, this indicates a ‘stuck bit’ and

could be the result of a fault in the upstream video.

12Using the Monitor Output

Audio Input

The audio waveform display at the top of the audio input panel shows the audio information for

the past 6 seconds of your live stream. This is continually updated and scrolls from right to left.

Below the audio waveform display you can view detailed technical information about the

audio input.

Sample Frequency Displays the sample frequency rate of the audio embedded in the SDI input.

Emphasis Indicates if your audio source has its emphasis option enabled.

Audio Source Lock Indicates whether the audio source frequency is locked to an

external reference source.

Word Length Shows the bit depth of the audio embedded in the SDI input.

Origin These four characters indicate the channel origin.

Time of Day Free run timecode.

Audio Bits Shows the bit activity in the audio samples embedded in the SDI

connection. Even if the audio channel status says you have 16, 20 or 24

bit audio, the audio bit activity will confirm it.

VUCP Reading VUCP bits from left to right: the ‘V’ bit indicates ‘valid’, ‘U’is the

‘user’ bit, ‘C’ is the ‘channel status’ bit, and ‘P’ is for ‘parity’. This field is like

‘audio bits’.

Sample Address Audio sample counter.

AUX Bits Use Indicates whether AUX bits are used for main audio.

Audio Channels 1-32 Each digit represents an embedded audio channel on the SDI input.

A ‘P’ shows that an audio channel is in use and a ‘-’ means that there is no

audio on that channel.

13Using the Monitor Output

Data Rate Display

The data rate display shows the current data rate of of the encoder over the past 60 seconds.

The data rate is measured in megabits per second. This indicator runs consistently, even when

off air, so you can accurately gauge your bandwidth before going on air.

Cache Display

The cache display shows the percentage of your Web Presenter’s built in memory buffer that is

currently in use and the graph shows the amount used over the past 60 seconds. The cache is

a small amount of internal memory that continuously records and plays the program output.

It acts as a safety measure if the streaming data rate decreases below a level able to

sustain video.

The variable nature of the internet is mostly due to network activity or wireless signal strength,

so if the broadcast data rate decreases, the buffer data will increase accordingly. If the

connection speed becomes slow enough that it cannot support the video stream, the cache will

fill with video frames to compensate. However, once the cache is 100% full, the video stream

will be compromised, so you will want to avoid a full cache where possible. You can run a test

by connecting a video feed and watching the cache display in the monitor output without

having to start the stream. If the cache frequently approaches 100%, choose a lower quality in

the live stream settings.

Audio Meters

You can monitor the levels of your audio source using the audio meters. These can be set to

display either PPM or VU levels in the Web Presenter’s menu settings. If your audio levels are

too high the meters will illuminate red and may mean that the audio in your live stream could

become distorted or clipped. Ideally try to keep your audio towards the top of the green section

and occasionally in to the yellow section.

14Using the Monitor Output

Using Web Presenter Setup

When your Blackmagic Web Presenter is connected to a network, any computer connected to

the same network can be used to control your Web Presenter remotely. With Blackmagic Web

Presenter Setup, you can access the same controls and settings that are available on the unit’s

front panel.

15Using Web Presenter Setup

Live Stream Tab

Video Output

Stream Standard

Click on the ‘stream standard’ menu to select the video resolution setting for your stream.

Youcan choose from 720p25 up to 1080p60 or 2160p60 depending on which WebPresenter

model you are using.

Settings

If you have custom streaming settings, for example an XML file from a Blackmagic

ATEM Streaming Bridge, you can import them by clicking the ‘load streaming settings’ button.

For more information on creating custom settings and connecting to ATEM Streaming Bridge,

refer to the ‘Creating Video Links with ATEM Streaming Bridge’ section later in this manual.

Live Stream

Platform

Click the ‘Platform’ menu to select the streaming platform for your broadcast. Options include

YouTube, Facebook and Twitch. If you have imported custom streaming settings they will also

appear in the platform list.

To stream to a custom URL, select a custom URL option from the ‘platform’ menu. On Web

Presenter 4K you can choose to stream to a custom URL using H.264 or H.265, on Web

Presenter HD you can stream to a custom URL using H.264.

Server

Select the server that is closest to your location by selecting it from the list. The server list will

vary depending on your chosen streaming platform.

If you are streaming to Instagram, Microsoft Teams, or to a custom URL, the server list will be an

editable field. Enter the URL assigned from your streaming platform account or custom

URL details.

Key

Enter the streaming key that has been assigned to your broadcast from the streaming platform.

Passphrase

If you are using a streaming service with the SRT streaming protocol, enter the passphrase

assigned from your streaming platform account.

16Using Web Presenter Setup

Quality

Select the streaming quality for HD or 4K, depending on which Web Presenter model you

are using.

H.264

HD 4K

HyperDeck High 45 to 70 Mb/s HyperDeck High 95 to 220 Mb/s

HyperDeck Medium 25 to 45 Mb/s HyperDeck Medium 66 to 150 Mb/s

HyperDeck Low 12 to 20 Mb/s HyperDeck Low 38 to 80 Mb/s

Streaming High 6 to 9 Mb/s Streaming High 34 to 51 Mb/s

Streaming Medium 4.5 to 7 Mb/s Streaming Medium 23 to 35 Mb/s

Streaming Low 3 to 4.5 Mb/s Streaming Low 13 to 20 Mb/s

H.265

HD 4K

Streaming High 2.3 to 4.5 Mb/s Streaming High 22.5 to 30 Mb/s

Streaming Medium 1.5 to 3 Mb/s Streaming Medium 14 to 20 Mb/s

Streaming Low 0.8 to 2 Mb/s Streaming Low 8 to 10 Mb/s

The data rate used by the quality setting will change depending on the video standard Web

Presenter is using. For example, if you select ‘streaming high’ quality and are running at

1080p24 then it would use the 6 Mb/s data rate.

As you can see in the table, the streaming data rates are lower compared to the HyperDeck

rates. This allows for transmitting data over the internet which typically uses a lower bandwidth

compared to recording data on a disk.

You will notice that each setting has 2 data rates mentioned. The lower number is used for the

lower frame rates of 24p, 25p and 30p, while the higher data rates are used when you are

running higher frame rates of 50p and 60p. It’s also worth noting that the default setting for the

streaming quality is Streaming High, as this gives a very high quality streaming channel.

Off and On Air buttons

You can start or stop a live stream by using the ‘off’ and ‘on air’ buttons. The ‘on air’ button

illuminates red when a live stream is in progress.

Remove Imported Settings

To remove all imported streaming settings from your Web Presenter, click the cog icon at the

bottom left of the ‘live stream’ tab. To confirm your choice click ‘remove’.

17Using Web Presenter Setup

Audio Tab

The audio tab contains options to configure your Web Presenter’s audio monitoring output and

audio meters.

Monitor Output

Use the monitor output options to choose the audio source used for your Web Presenter’s SDI

and HDMI monitoring outputs.

Auto

When the monitor output is set to ‘auto’, your Web Presenter will automatically detect and

monitor talkback audio being sent from an ATEM Switcher via an ATEM Streaming Bridge. If no

talkback is detected, audio from the SDI input will be used.

SDI Input

Select ‘SDI input’ to monitor the audio from your Web Presenter’s SDI input source, for example

a connected Blackmagic Studio Camera.

Remote Source

Use this option to monitor talkback audio sent from a remote ATEM switcher or an ATEM

Streaming Bridge.

Audio Meters

Choose the type of audio meter to display using the audio meters menu. The options available

are VU -18dBFS, VU -20dBFS, PPM -18dBFS or PPM -20dBFS reference levels.

18Using Web Presenter Setup

Setup Tab

Name

If you want to rename your Web Presenter, type a new name into the box and click ‘save’.

Language

Lets you change the unit’s language setting.

Software

Displays Web Presenter’s current software version.

Network

These settings allow you to configure options such as choosing between connecting to a

network over DHCP or using a static IP address. For more information on connecting your

WebPresenter to a network, refer to the ‘network settings’ section.

Connection Priority - When Ethernet and a mobile phone are both connected to theWeb

Presenter, this setting lets you choose which connection will be used for streaming. For more

information on mobile tethering, refer to the ‘streaming using yoursmartphone’ section

Reset

Reset your Web Presenter by clicking the ‘factory reset’ button.

19Using Web Presenter Setup

Network Settings

Your Web Presenter can connect to the network using a static IP address or by using DHCP.

DHCP - will automatically set an IP address for your unit and connect it to your network without

any settings changed.

The dynamic host configuration protocol, or DHCP, is a service on network servers and routers

that automatically finds your Web Presenter and assigns an IP address. DHCP makes it easy to

connect equipment via Ethernet and make sure that IP addresses do not conflict with each

other. Most computers and network switches support DHCP.

Static IP - If you want to set the IP address yourself, simply set the protocol setting to ‘static IP’

and change the IP settings manually.

A static IP address is one that won’t change even if your Web Presenter is rebooted.

Using a static IP address might be necessary if your connecting your Web Presenter to a

corporate network. If you have a network administrator, it’s possible your network might have

custom IP addresses for all the equipment connected to it. It’s best to check with your network

administrator if they are managing your computers and network in your company.

Setting Internet Sharing

forDirectStreaming

If you are unable to plug Web Presenter directly into a network switch or internet router, youcan

share your computer’s internet connection with Web Presenter through its Ethernet port.

To set up Blackmagic Web Presenter for direct streaming:

1 Set your Web Presenter to use DHCP.

2 Configure your computer to share its internet connection through its Ethernet port.

Mac: in System Preferences, click ‘sharing’ then select ‘internet sharing’ from the ‘service’ list.

In the ‘share your connection from’ menu, choose ‘wi-fi’ if your Mac is connected to the internet

over wifi. In the ‘to computers using’ list, select ‘ethernet’. Inthe ‘service’ list, tick the ‘internet

sharing’ checkbox. When you are asked if you are sure you want to turn on internet sharing,

click ‘start’.

Windows: right click the ‘start’ icon and select ‘network connections’. The ‘network status’

screen appears. Click on ‘change adapter options’. This lists your computer’s network

connections. Right click on the internet connection and select ‘properties’. Onthe ‘sharing’ tab,

tick ‘allow other network users to connect through this computer’s internet connection’. Select a

network connection in the menu then click ‘OK’.

3 Plug Web Presenter into your computer’s Ethernet port. After a few seconds, DHCPassigns

an IP address to Web Presenter.

4 Confirm your Web Presenter is connected to the internet via Ethernet by observing

Ethernet icon in the top right corner on the unit’s LCD screen.

20Setting Internet Sharing forDirectStreaming

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