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DMNG StreamHub Guide Document version: v2 Software Version: 2.1.x 03/2016 – Customer Services

Table of Contents How to Read this Document? .................................................................................................... 4 Copyright and Trademarks......................................................................................................... 4 Us .................................................................................................................................. 4 DMNG StreamHub Overview ..................................................................................................... 5 DMNG Ecosystem Overview .................................................................................................. 5 DMNG StreamHub Server Application Overview................................................................... 5 Getting Started........................................................................................................................... 9 Checking the Network Configuration ..................................................................................... 9 Configuring Basic Settings .................................................................................................... 10 Accessing the DMNG StreamHub Web Page ........................................................................... 11 Managing Incoming Live Videos .............................................................................................. 12 Monitoring the Video Transmissions ................................................................................... 12 Managing the Video Transmissions ..................................................................................... 15 Managing Received and Recorded Files .................................................................................. 18 Playing Back Video Files ....................................................................................................... 19 ing Files ................................................................................................................ 19 Deleting Files ........................................................................................................................ 20 Renaming Files ..................................................................................................................... 20 Controlling Remotely the Connected Field Units .................................................................... 21 Managing Connected Field Units ......................................................................................... 21 Controlling Remotely Connected DMNG Field Units ........................................................... 21 Configuring Remotely Connected DMNG Field Units .............................................................. 25 Configuring the DMNG StreamHub Application’s Settings...................................................... 26 Configuring the Outputs ....................................................................................................... 26 Configuring General Settings ............................................................................................... 31 Configuring the Media Recorder .......................................................................................... 34 Configuring the Media Cleaner ............................................................................................ 34 Configuring the Media Transcoder ...................................................................................... 35 Configuring the Intercom ..................................................................................................... 36 Configuring the File Transfer (FTP Push) .............................................................................. 39

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Configuring a Watch Folder ................................................................................................. 40 Updating the DMNG StreamHub Application .......................................................................... 41 References ............................................................................................................................... 41 About Section ....................................................................................................................... 41 Capped Bitrate...................................................................................................................... 42 Note on File Formats ............................................................................................................ 42 Bandwidth Used for the Intercom Function ........................................................................ 42 Streaming Output Good Practices........................................................................................ 43 Troubleshooting ....................................................................................................................... 44 Viewing the Logs .................................................................................................................. 44 Getting a Report File ............................................................................................................ 44 Restarting the DMNG StreamHub Application .................................................................... 44 Troubleshooting Streaming Outputs.................................................................................... 45 Troubleshooting Intercom ................................................................................................... 47 Troubleshooting Record ....................................................................................................... 47 Glossary .................................................................................................................................... 48

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How to Read this Document? This Guide is intended for master control room operators. In this document, we assume that Master Control Room (MCR) operators have advanced computer knowledge and are familiar with any equipment used by operators. To facilitate the navigation through this Guide, we adopt the following text styles: 

The references are underlined; click on them to access the referred part.



The highlighted in bold are interface .



Please note that data that can vary such as file names and default values (for IP addresses, names and s) are in italic.



The in blue font are defined in the glossary; click on them to access the glossary.

Important notice: The content of this guide may be modified without notice. Please go to AVIWEST's Extranet to make sure that you have the latest version of this manual.

Copyright and Trademarks This guide and its content are the property of AVIWEST. It is forbidden to copy, disclose, or reproduce either the whole document or any part without AVIWEST’s prior written agreement. DMNG® is a trademark of SAS AVIWEST. All other trademarks are the property of their respective owners.

Us Should you have any question or require any complementary information, feel free to AVIWEST’s technical team. Global Headquarters

APAC Office

LatAm Office

Russia Office

[email protected]

+33 (0) 2 56 56 50 18

+852 3580 8964

+56 (9) 67 55 11 23

+7 (963) 658 42 18

Espace Performance, Bat. O 35769 SAINT-GREGOIRE Cedex,

Unit 401B, 4/F, Block A Sea View Estate 2-8 Watson Road, North Point HONG KONG

www.aviwest.com

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DMNG StreamHub Overview DMNG Ecosystem Overview The DMNG ecosystem, which stands for Digital Mobile News Gathering, is a video contribution system for streaming live video content over bonded IP and satellite networks, also offering distribution functions thanks to the DMMNG StreamHub’s Streaming output software option. A DMNG ecosystem includes at least two types of components: 

Field units: DMNG PRO and DMNG RACK video encoders and transmitters as well as smartphones using the DMNG APP. In software releases, the DMNG StreamHub will also accepts video streams coming from third party equipment, such as IP video cameras.



DMNG StreamHub video server application.



A DMNG ecosystem can also include a DMNG Manager, which is the server application designed to monitor and manage an entire ecosystem.

DMNG StreamHub Server Application Overview The DMNG StreamHub is a Linux-based video server application designed to receive and distribute video and feeds. Its interface is web-based.

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Main Functions Designed to receive video and audio feeds, the DMNG StreamHub allows: 

decoding and streaming out video and audio content through its physical outputs (SDI or HDMI),



distributing video and audio content through CDNs, media servers, IRDs thanks to its streaming outputs,



recording video files1,



Transcoding and playing back video files forwarded by field units,



monitoring video transmissions,



monitoring and controlling remotely the connected field units.

To ease newsgathering management operations, the DMNG StreamHub also features video upscale and downscale capabilities, as well as the following options2: File Transfer, Intercom, and Tally Light. ed Inputs and Outputs ed Inputs With up to 16 input Channels, the DMNG StreamHub s incoming digital video and IP video streams from DMNG field units: DMNG PRO, DMNG RACK or DMNG APP. The software license applied on the DMNG StreamHub application defines the number of input channels as well as the number of field units allowed to connect simultaneously to the DMNG StreamHub (for each type of field units). Please see Checking the License. DMNG StreamHub’s Outputs The DMNG StreamHub has two different types of outputs: physical outputs and streaming outputs. Physical Outputs The DMNG StreamHub can have up to 4 SDI outputs when installed on a 2U server and up to 2 SDI outputs when installed on a 1U server. 1U and 2U DMNG StreamHub servers can have one HDMI output maximum. The number of physical output depends on the video card embedded in the DMNG StreamHub server as well as on the license applied on the server. Please see Checking the License. The DMNG StreamHub offers multiple output video resolutions: HD 1080i, HD 1080p, HD 720p, SD, PAL, and NTSC.

1

The Record function is a software option; its availability depends on the license applied on the DMNG StreamHub. 2 The File Transfer, Intercom and Tally Light are software options; their availability depends on the license applied on the DMNG StreamHub.

6

Streaming Outputs The DMNG StreamHub offers up to 16 streaming outputs, depending on the license applied on the server, to distribute video content using RTMP, RTSP, HLS or TS/IP streaming protocol. Each streaming protocol is designed for a specific use case, for more information please see Selecting the Proper Streaming Protocol. DMNG StreamHub Application Overview The DMNG StreamHub’s interface is a web page available from any computer connected to the Internet, for more information about how to access the web page please see Accessing the DMNG StreamHub Web Page. The DMNG StreamHub web page is composed of three main sections: a section, a dashboard and a side bar. Section

Side Bar

Input Channels

Outputs

Dashboard Section There are two privilege levels to access the DMNG StreamHub: and . In the top part of the DMNG StreamHub, you can see the current access type. The section allows logging in to the DMNG StreamHub web interface as or as . It also allows performing maintenance operations, such as changing the s to access the web page as or as , restarting the DMNG StreamHub or getting a report file.. For more detailed information, please see Changing the s, Restarting the DMNG StreamHub Application and Getting a Report File.

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Dashboard The home page of the DMNG StreamHub application is called Dashboard. It shows all the video inputs of the DMNG StreamHub which are the receiving channels, the physical outputs (SDI or HDMI) and the streaming outputs, if any. The Dashboard shows the state of each input channel: Online The channel is busy: a field unit is connected to the channel. Offline The channel is free, there is no field unit connected. On Air

This indicator turns red when the video is on air and when the tally light is activated.

Freeze

A field unit is connecting to the channel (temporary state).

It also shows the status of each field unit connected to the DMNG StreamHub: Connection in progress | Checking video | Bandwidth test Ready to operate Live in progress Live and auto-record in progress Store in progress Store and Forward in progress (fragmented Store & Progressive forward) Forward in progress Side Bar Located on the left, the side bar is the menu of the DMNG StreamHub. It gives access to: 

the Dashboard,



the Channel pages, each Channel page corresponds to a channel of the DMNG StreamHub,



the Intercom page,



the File explorer, which is the file explorer of the DMNG StreamHub application,



the Logs page,



the Settings menu (only available to s),



the Help section, from which you can the Guide corresponding to the current software version of the DMNG StreamHub,



the About section, which provides general information about the DMNG StreamHub, please see About Section.

DMNG StreamHub License The license is an .awl file applied on the DMNG StreamHub application. It defines the number of input channels, simultaneous connections allowed to the DMNG StreamHub (for each type of field units), physical outputs, streaming outputs, as well as the optional functions (for more details, please see Checking the License).

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Getting Started In order to operate properly, the DMNG StreamHub server must be properly installed and its network interface(s) configured according to your network architecture. The DMNG StreamHub also requires minimal and speeds. For more information, please refer to the DMNG StreamHub Installation Guide. Before using the DMNG StreamHub application for the first time, we strongly recommend that you check the configuration of the network interfaces of the DMNG StreamHub server and that you make sure that the downlink and uplink speeds of the DMNG StreamHub are sufficient for your use. For more details, please refer to the DMNG StreamHub Installation Guide. We also recommend that you check your router or firewall configuration, please see Checking the Network Configuration, and that you Configuring Basic Settings.

Checking the Network Configuration Reminder: The DMNG StreamHub uses the following UDP and T ports: Port

Inbound

Outbound

UDP 7900-79xx*

X

X

T 8888

X

T 80 T 5322

X

T 7900

X

T 21

X

T 20

X

T 12000-12009

X

T 445

X

Use

7900: Default base port** 7901-79xx : 1 port per DMNG StreamHub's channel* Allows the remote access to the X DMNG StreamHub web interface. Allows connecting to official Ubuntu servers X (http://archive.ubuntu.com/) to upgrade the system. Allows the remote access to the server’s settings menu through an ssh connection. DMNG Manager Allows the connection between the X DMNG StreamHub and the DMNG Manager. This is the default base port**. File Transfer Allows the access to the FTP server of the DMNG StreamHub. Allows the access to the FTP server of the DMNG StreamHub (when the client requires the active mode). Allows the access to the FTP server of the DMNG StreamHub (when the client requires the ive mode). Allows the access to the Samba file sharing system of the DMNG StreamHub. Streaming output 9

T 1935

X

If there is a proxy or firewall: for RTMP streaming output protocol (this is the default port)

Notes: * Here, you have to open a port range starting from the base port and equal to the number of channels of the DMNG StreamHub + 1. Mind: the number of channels is defined by the license, please see Checking the License. ** s can modify the base port from the DMNG StreamHub application’s settings menu, for more information please see Configuring the Connection Settings. Make sure that the router or firewall to which is connected the DMNG StreamHub server allows traffic on these UDP and T ports.

Configuring Basic Settings Before using the DMNG StreamHub for the first time, we strongly recommend that the configure: 

the outputs, please see Configuring the Outputs,



the connection settings used to connect field units to the DMNG StreamHub, see Configuring the Connection Settings,



the and s to access the DMNG StreamHub web page, see Changing the s,



the StreamHub ID, especially if there is a DMNG Manager in the DMNG ecosystem, see Changing the StreamHub ID.

If you want to use the Media Transcoder or some optional functions, such as the Intercom, or the File Transfer, you also have to configure their settings.

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Accessing the DMNG StreamHub Web Page You can access the DMNG StreamHub web interface from any computer connected to the Internet. ① Open Google ChromeTM web browser. ② Type "http://" plus the public IP address of the DMNG StreamHub followed by :8888. For instance, if the public IP address of the DMNG StreamHub is 109.190.1.25, you have to type http://109.190.1.25:8888 Note: If the computer and the DMNG StreamHub server are connected to the same LAN, use the local IP address of the DMNG StreamHub server. ③ to the DMNG StreamHub application as or as . The default names and s are: Access Level name Default 3







aviwest



streamhub4

▷ You have now access to the DMNG StreamHub web page.

3

You can change the for the and for the , for more information please see Changing the s. 4 If you installed a DMNG StreamHub software version before v2.0.3, the default for the is dmngstudio.

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Managing Incoming Live Videos The quality of the output video depends on the quality of the transmission, namely the performance of each link used as well as the latency and the other settings used for streaming.

Monitoring the Video Transmissions The DMNG StreamHub allows you to monitor the video transmissions in order to facilitate their management. Preview Input and Output Videos On the Dashboard you have the preview of the video inputs and outputs. Note on Video Input Preview The input preview is available for videos coming from DMNG APP v3.6 (and later versions) and from DMNG PRO and DMNG RACK v2.6 (and later versions). An input preview appears as soon as a video source is detected on a field unit connected to one of the channels of the DMNG StreamHub. If the uplink speed of the field unit is not sufficient, the DMNG StreamHub may disable the video input preview on the corresponding channel. Note on Video Output Preview The output video preview is only available for physical outputs (SDI or HDMI), not for streaming output. The preview on the physical outputs does not represent the video quality as it is on the physical outputs of the DMNG StreamHub. If you want to check the video quality on one of the physical outputs of the DMNG StreamHub, plug an SDI (or HDMI) monitor to the server’s physical output. Monitoring the Network Performance On each Channel page of the DMNG StreamHub, you can monitor the network performance, thus monitoring the transmission performance thanks to statistics. On the Home tab, the gauge (1) and the Stream information detail table (2) give a realtime overview of the transmission. Both elements show the stream bitrate, the video and the audio bitrates and the amount of lost packets.

1 2 3

4

A line graph (3) shows the total bandwidth and the bandwidth for each active network interface. You can use the checkboxes on the right of the graph to select the network connections to show or hide. A table (4) also provides for each network connection the amount of lost packets, the

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bitrate (kbps) and the latency (ms). If needed, you can then perform the following adjustments: deactivating or activating cellular modems and capping the video bitrate. Deactivating and Activating Cellular Modems You can deactivate one or several modems of DMNG PRO or DMNG RACK field units, for instance to deactivate a modem that makes the quality drop, typically a link showing a large amount of lost packets and a high latency. ① Access the Channel page. ② Show the Network information graph and table to find out the modem that you want to deactivate.

③ Click on modem.

▷ The modem deactivated.

to deactivate the

is

temporarily

Capping the Video Bitrate Capping the video bitrate means setting a maximum bitrate for the video encoding when the bitrate mode is set to VBR. In some cases, lowering the video Capped bitrate improves the quality of the transmission. Please note that there is a minimum and maximum video bitrate for each video resolution, please see Capped Bitrate. Before adapting the video bitrate, check that the Live profile selected is suitable for streaming video content in the current network conditions. If the video quality looks poor despite using a Live profile appropriated to the network conditions, and if you observe that the overall bandwidth is lower than the video capped bitrate, you can lower the video capped bitrate, thus the exceeding bandwidth is used for packet redundancy, which decreases the amount of lost packets. To cap the video bitrate: ① Access the Channel page. ② Use the Video capped bitrate slider control to cap the video bitrate in real time.

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▷ The video bitrate is dynamically capped according to your change. Communicating with DMNG Field Units You can start using the Intercom function5, which is a software option, either from the Dashboard, the Intercom page or from a Channel page. ① Access the Dashboard, the Intercom page or the Channel page of the channel to which is connected the DMNG field unit with which you want to communicate. ② Click on

to start the Intercom function.

▷ The Intercom button turns blue when the connection is established with the field unit. You can now communicate with the field unit through the sound card connected to the DMNG StreamHub. ③ Access the Intercom page if you want to perform one of the following actions during the communication on each channel: 

Mute the audio input, i.e. the voice that is sent to the field unit, by clicking the microphone button:

.



Unmute the audio input, by clicking the microphone mute button:



Mute the audio output, that is to say the software return which is the sound coming from the field unit, by clicking the speaker button:



.

Unmute the audio output by clicking the speaker mute button:

④ Click on

.

.

to turn off the Intercom.

s can also configure the Intercom to automatically start the communication when a field unit connects to the DMNG StreamHub server, please see Configuring the Intercom. If you face an issue with the Intercom function, see Troubleshooting Intercom. 5

In order to use the Intercom function, you need to connect a sound card to the DMNG StreamHub server, to configure it from the DMNG StreamHub application’s settings, see Configuring the Intercom, and to connect headphones and a microphone to the sound card. The of the field unit also has to connect headphones and a microphone to the field unit.

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Managing the Video Transmissions The DMNG StreamHub application receives incoming Live video and audio feeds in order to: 

decode and broadcast video content through its physical outputs,



stream out video content to CDNs, media servers, IRDs through its streaming outputs (software option),



record them into video files (software option).

Managing the Outputs Locking Video Outputs You can lock any physical and streaming output using the lock button ( ) in order to avoid changing the input channel from the Dashboard or any Channel page. Click the unlock button (

) to unlock the output.

Note: Locking an output does not prevent the from changing the configuration of the output from the Settings menu. Setting the Output Video Resolution s can select the video output resolution only for the physical outputs (i.e. SDI and HDMI outputs). Then, the DMNG StreamHub automatically downscales or upscales the video input to the selected output video resolution and standard on its physical outputs. For the streaming outputs, the DMNG StreamHub transmuxes the input videos to the selected streaming protocol, the output video resolution and standard thus corresponds to the input video resolution. Only s can configure the outputs. Please see Configuring Physical Outputs. s can also change the output resolution and frequency while the output is in use. It interrupts the Live for a few seconds (5 seconds max). Selecting the Proper Streaming Protocol You have to select the most suited streaming protocol according to your specific use: Streaming Protocol RTMP

Use Live Streaming to CDN or Media Server

HLS

Live Streaming over LAN or WAN

RTSP

Live Streaming over LAN or WAN

TS/IP

Live streaming to IRDs

In order to obtain the best possible video quality through the DMNG StreamHub’s streaming outputs, the encoding settings configured on the field unit are crucial please see Streaming Output Good Practices.

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Broadcasting Videos You can broadcast videos through the DMNG StreamHub’s physical and streaming outputs directly from the Dashboard page or from a Channel page. Broadcasting Videos from the Dashboard ① Access the Dashboard. ② Drag and drop the Channel or the video input preview to the physical or streaming output(s), you can stream out the same input stream through several outputs simultaneously.

③ If you use streaming outputs, make sure that the outputs are enabled: the button is black before starting streaming and it turns blue when it is streaming. Broadcasting Videos from a Channel Page ① Access the Channel page of the channel receiving the video feed that you want to broadcast. ② Drag and drop the video input preview to the output(s).

▷ The video is streamed out through the outputs. If errors occur on the video output(s), please see Troubleshooting Streaming Outputs.

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Recording Incoming Live Videos If the license applied on the DMNG StreamHub allows the Record function, the DMNG StreamHub can record any incoming video stream onto its internal hard drive disks, even while it is being broadcasted through physical or streaming outputs. You can activate the Record from the Dashboard or from the Channel page of the channel receiving the video feed to save. ① Click on to start recording. If the record button is not available, please see Troubleshooting Record. ▷ The record button turns blue ( ) and the DMNG StreamHub starts recoding the video onto the DMNG StreamHub server. ② Click on to stop recording, or the recording automatically stops when the live transmission ends. ▷ The video is recorded in a TS file. It is available in the File explorer of the DMNG StreamHub application and on the server in the folder data/media/[device_identifier]. Please see Note on File Formats. Notes s can configure the recorder so that the record automatically starts on a channel as soon as it receives video feeds, please see Configuring the Media Recorder. When the Record function is configured to start automatically (Record auto-start), deactivating the Record on a channel also disables the Record auto-start temporarily on the channel. To re-enable the Record auto-start , you have to reactivate the Record on the channel by clicking the record button or you have to restart the DMNG StreamHub application6.

6

Restarting the DMNG StreamHub application disconnects all the online field units from the DMNG StreamHub and it stops the action(s) in progress on the fields units (Live or Forward) and on the DMNG StreamHub’s outputs.

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Managing Received and Recorded Files The DMNG StreamHub can receive any type of file forwarded by field units. The File explorer allows you to play back7, , rename and delete the files forwarded by field units as well as the files recorded and transcoded by the DMNG StreamHub.

The File explorer of the DMNG StreamHub application provides information on the files saved onto the DMNG StreamHub: 

type of item:



file name,



modification date,



file size (in B, KB or MB).

folder,

video file or

other type of file,

There are several methods to get the files saved on the DMNG StreamHub server (files received, transcoded or recorded by the DMNG StreamHub): 

ing Files from the File explorer,



using the DMNG StreamHub’s File Transfer. This software option allows setting one or several FTP servers as destination folder(s) in order to automate the file transfer from the DMNG StreamHub server to your specific file system, please see Configuring the File Transfer,



Using the FTP or Samba server embedded into the DMNG StreamHub, please see Configuring a Watch Folder.

7

The DMNG StreamHub only plays MP4, MP4f and MOV video files sent by DMNG field units.

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Playing Back Video Files If the license applied on the DMNG StreamHub includes the Play back option, you can play back MP4, MP4f, MOV8 and TS video files saved on the DMNG StreamHub in order to stream them out through one or several physical outputs. ① Access the File explorer of the DMNG StreamHub application. ② Access the folder corresponding to the field unit from which the file came. ③ Click the play back button and select the physical output on which you want to stream out the video file. You can also drag and drop the video file toward one or several physical outputs (if not locked).

▷ After playing back the video file, click the eject button to release the physical output.

ing Files ① Access the File explorer of the DMNG StreamHub application. ② Access the folder corresponding to the field unit from which the file came. ③ Click the button to the file onto the computer you are using to access the DMNG StreamHub web page. ▷ The file is ed.

8

MP4, MP4f and MOV video files recorded by DMNG field units.

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Deleting Files ① Access the File explorer of the DMNG StreamHub application. ② Access the folder corresponding to the field unit from which the file came. ③ Select the file(s) to delete using the checkbox(es). Note: you cannot select at the same time files that are not located in the same folder. ④ Click the Delete button to delete the selected file(s) from the DMNG StreamHub server. Note: s can also configure the Media Cleaner to automatically clean the Media sub folders on a regular basis. Please see Configuring the Media Cleaner.

Renaming Files ① Access the File explorer of the DMNG StreamHub application. ② Access the folder corresponding to the field unit from which the file came. ③ Click the rename button

.

④ Type the new file name. ⑤ Click on Save or press the Enter key of your keyboard to rename the file as per your edit.

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Controlling Remotely the Connected Field Units The DMNG StreamHub allows you to remote control each DMNG field unit connected to the DMNG StreamHub.

Managing Connected Field Units You can disconnect any DMNG field unit connected to the DMNG StreamHub using the Disconnect button from the Dashboard or Channel page. Note: Disconnecting a field unit while it is streaming Live or forwarding files stops the action currently performed by the field unit as well as the Intercom on the channel.

Controlling Remotely Connected DMNG Field Units There are two levels of remote control: basic remote control and full remote control. However, both levels of remote control are unavailable when the DMNG PRO is operating, i.e. when a Live, Record or Forward is in progress (except stopping a Live). Basic Remote Control When a DMNG field unit (DMNG PRO, DMNG RACK or DMNG APP) is connected to a DMNG StreamHub’s channel, you can remotely control it directly from the Channel page. 3

1

2

From the Channel page, you can start a live transmission or managing the files saved onto any mass storage device connected to or inserted into the field unit (SD card and USB key). Note: These functions are not available when the field unit is operating, i.e. when a Live, Record or Forward is in progress.

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Starting a Live Transmission To start a Live transmission from a Channel page: ① Select the Live profile (not available for DMNG APP) (1). Note: This dropdown list can include up to 30 Live profiles (even though you can configure up to 50 Live profiles from the Web Configurator of the DMNG PRO). ② Click the Start Live button to start the Live transmission (2). ▷ This button turns to a Stop Live button when a Live is in progress on the channel. Forwarding Files You can forward any type of files saved onto any mass storage device connected to or inserted into the field unit (SD card and USB key). ① Click on Media to select the mass storage device, SD card or USB key, on which are the file(s) that you want to forward9.

② Use the checkbox(es) to select the file(s) that you want to forward. You can select files located in different folders. ③ Click the Forward button. ▷ The files are forwarded in queue. The forwarded files are available in the File explorer of the DMNG StreamHub application and they are saved on the server in the folder data/media/[device_identifier]. (Please see Note on File Formats.)

9

If you have inserted a new mass storage device into the DMNG field unit while you were on the Media page, you have to click on Media to refresh the file list.

22

Renaming a File Note: Do not rename an MP4F file which has not been finalized yet (i.e. transcoded into an MP4 or MOV file); otherwise the Forward will restarts from the beginning. ① Click on Media to select the mass storage device on which are the file(s) that you want to rename. ② Click the rename button . ③ Type the new file name. ④ Click on Save or press the Enter key on your keyboard to rename the file as per your edit. Note: An exclamation mark appears below the file name if you entered an incorrect character (namely a coma character, a space character or *). Click on this exclamation mark to cancel the renaming. Deleting a File ① Click on Media to select the mass storage device on which are the file(s) that you want to delete. ② Use the checkbox(es) to select the file(s) that you want to delete. You can select files located in different folders. ③ Click the Delete button. ▷ The selected files are deleted.

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Full Remote Control You have full remote control of the connected DMNG PRO and DMNG RACK thanks to the Web Configurator tab (for s) or the Remote tab (for s). ① Access the Channel page of the channel to which is connected the field unit that you want to control. ② Access: 

the Remote tab (for s),



the Web Configurator tab of the Channel page (for s), and then the Remote tab of the Web Configurator.

or

Notes: 

Please note that only one can connect to the Web Configurator at the same time.



Please also note that the Web Configurator and the Remote tabs are not available when the DMNG PRO is operating, i.e. when a Live, Record or Forward is in progress. ▷

For more information ing the DMNG PRO through its touchscreen, please refer to the DMNG PRO Guide.

Note: Please note that you cannot perform the following actions on the DMNG PRO using the DMNG StreamHub: o starting or stopping the auto-record while a Live is in progress, o stopping a Store, o stopping a progressive forward (if the DMNG PRO firmware version is lower than v2.5).

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Configuring Remotely Connected DMNG Field Units This section explains how to remotely configure DMNG PRO or DMNG RACK field units connected to the DMNG StreamHub. Please note that only s have access to the Web Configurator tab of the channel pages. Notes: 

You cannot access the Web Configurator tab when the DMNG PRO is operating, i.e. when it is streaming Live, recording videos or forwarding files.



Please note that only one can access the Web Configurator at the same time.

To configure remotely a DMNG PRO or a DMNG RACK: ① On the DMNG StreamHub, access the page of the Channel to which is connected the DMNG field unit that you want to configure. ② Access the Web Configurator tab. ▷ You can now configure the DMNG field unit through its Web Configurator. Please refer to the DMNG PRO Guide for more details. ③ After modifying settings on any tab of the Web Configurator, click the SAVE CONFIG button to save the modifications.

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Configuring the DMNG StreamHub Application’s Settings Only s can access the Settings menu to configure the DMNG StreamHub application as well as the server’s outputs.

Configuring the Outputs Before using the DMNG StreamHub application for the first time, you have to configure its outputs according to your needs. Configuring Physical Outputs You can configure as many physical outputs as the DMNG StreamHub server has and according to the number of physical outputs that the license allows. Note: You can change the configuration of a physical output while it is in use, however changing the output standard, the packet loss management mode, the reference timing offset or the default input interrupts the Live for a few seconds (5 seconds max). To configure physical outputs: ① On the side bar, click on Settings. ② Click on Physical Outputs. ▷ You can now configure every output according to your needs.

③ Edit the output name in the Output field. ④ Select the output resolution and standard (Output standard). ⑤ Select the Packet loss management mode (only applies to live videos, not to play back): 

Concealment The decoder es incomplete H264 slices and rebuilds the images on packet loss. Degraded pictures may appear on packet loss, but temporal rendition will be smoother than in freeze mode. This is the default setting.



Freeze 26

The decoder does not process incomplete H264 slices; it freezes the video on packet loss until it receives the next complete intra picture. No degraded picture on the output but temporal rendition will be jerky compared with concealment mode in case of packet loss. ⑥ Select the default input channel for the output. ⑦ Select the picture to display on stream loss from the Lost stream dropdown list and the Timeout (in seconds). If you want to use a custom picture, select Custom picture click the Browse button located at the bottom of the page, browse your computer to select the picture you want to use and click the button. ⑧ If you use a reference input signal (genlock) and that you need to adjust the phase of the video output with respect to the video reference, set the Ref Timing offset, in pixels (from -511 to +511). ⑨ Tick the Display output name checkbox to display the output name on the output preview. ⑩ Click the Save button located on the top right corner of the page to save your changes. Notes on Genlock 

The video standard of the input reference signal must match the output standard of the physical output(s).



You can genlock SDI outputs of the DMNG StreamHub using the REF Input of the video card. Please refer to the synchronization formats ed by the sync input of the video card integrated into the DMNG StreamHub server. Usually, it is BlackMagic Decklink 4K (1 output), Duo (2 outputs) or Quad (4 outputs).



If two SDI outputs are configured with different standards (e.g. 50Hz and 60Hz), do not genlock those outputs.

Configuring Streaming Outputs You can configure as many streaming outputs as the license allows. To configure streaming outputs: ① On the side bar, click on Settings. ② Click on Streaming Outputs. ▷ The Streaming Outputs configuration page appears. You can now configure the streaming output according to your needs.

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Configuring an RTMP Output ① Tick the Enable checkbox so that you can configure the output. ② Enter a name for the streaming output in the first field. ③ Select the RTMP streaming protocol from the dropdown list. ④ Type the destination in the URI field. Typically the URI of an RTMP live event is composed of the protocol, the destination host (its IP address or host name), the port, the application name, the instance name and the stream name. The port and instance name are optional. The pattern of an RTMP URI is as follows: [protocol]://[destinationHost](:[port])/[applicationName](/[instanceName])/[stream Name] For instance, the URI of a Youtube live event could be: rtmp://a.rtmp.youtube.com/live2/channelname.zdxd-sgyj-4m7s-42sx On YouTube, you can find the stream name and the destination host plus the application name (called "Server URL") on the Ingestion Settings page. If you do not use the default port for RTMP streaming protocol (T 1935), you have to add the port number after the destination host, separated by a colon character (e.g. if you use T port 1934, the URI will be: rtmp://a.rtmp.youtube.com:1934/live2/channelname.zdxd-sgyj-4m7s-42sx) ⑤ Select the Input channel you want to stream out through the streaming output that you are configuring. (s and s can also change the input channel associated to the streaming output from the Dashboard or from a Channel page, please see Broadcasting Videos.) ⑥ Select the Packet loss management mode: 

Freeze On stream packet loss, the video freezes. The DMNG StreamHub does not incomplete H264 slices and will wait the next complete intra picture. This mode will avoid crash and broken pictures at output of third-party decoders.



Concealment On stream packet loss, the transmission continues and the DMNG StreamHub es incomplete H264 slices. Mind: Third-party decoders may display broken pictures or even crash.

⑦ Click the Save button located in the top right corner of the page.

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Configuring an RTSP Output ① Tick the Enable checkbox so that you can configure the output. ② Enter a name for the streaming output in the first field. ③ Select the RTSP streaming protocol from the dropdown list. ④ Type a label for the output stream in the Label field. ⑤ If required, type the credentials ( and ) in the corresponding fields. Only 2 simultaneous clients can connect simultaneously to an RTSP stream coming from the DMNG StreamHub. ⑥ Select the Input channel you want to stream out through the streaming output that you are configuring. (s and s can also change the input channel associated to the streaming output from the Dashboard or from a Channel page, please see Broadcasting Videos.) ⑦ Click the Save button located in the top right corner of the page. Configuring a HLS Output ① Tick the Enable checkbox so that you can configure the output. ② Enter a name for the streaming output in the first field. ③ Select the HLS streaming protocol from the dropdown list. ④ Type a name in the Folder field. For HLS streams, there is no limitation on the number of simultaneous clients. ⑤ Select the Input channel you want to stream out through the streaming output that you are configuring. (s and s can also change the input channel associated to the streaming output from the Dashboard or from a Channel page, please see Broadcasting Videos.) ⑥ Click the Save button located in the top right corner of the page. Configuring a TS over IP Output ① Tick the Enable checkbox so that you can configure the output. ② Enter a name for the streaming output in the first field. ③ Select the TS streaming protocol from the dropdown list. ④ Set the TS bitrate in kbps based onto the input stream bitrate (i.e. the bitrate of the stream incoming on the DMNG StreamHub that you want to stream out through the TS output) plus a 20% margin and 200kbps. TS bitrate (in kbps) = (Stream bitrate x 120%) + 200 The TS bitrate must be superior to the incoming stream bitrate.

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The default TS bitrate is 12,000kbps. The minimal TS bitrate is 500kbps and the maximal bitrate is 20,000kpbs. ⑤ Set the Delay (i.e. the latency). The minimal delay is 300ms and the maximal is 3,000ms. ⑥ Set the PIDs for the audio, for the video, for the PMT and for the PCR. The PIDs must be included in the range 32 - 8190. ⑦ Enter the IP address of the receiver(s) (IRDs) and the port used for the transmission according to the settings of the IRD. You can configure up to two destinations. ⑧ Select the Input channel you want to stream out through the streaming output that you are configuring. (s and s can also change the input channel associated to the streaming output from the Dashboard or from a Channel page, please see Broadcasting Videos.) ⑨ Click the Save button located in the top right corner of the page.

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Configuring General Settings Changing the StreamHub ID The StreamHub ID is the name designed to identify the DMNG StreamHub. Setting an ID for the DMNG StreamHub is particularly important when there is a DMNG Manager in the DMNG ecosystem or when you usually access web pages of several DMNG StreamHub servers using one computer. ① On the side bar, click on Settings. ② Click on General. ③ In the General section, change the StreamHub ID. It must include 3 characters minimum and 15 characters maximum. ④ Click the Save button. ▷ The browser tab title shows the StreamHub ID. Configuring the Connection Settings The connection settings consist in the name, and base port used by the field units to connect to the DMNG StreamHub. ① On the side bar, click on Settings. ② Click on General. ③ In the Connection section, you can modify: 

the base port Modifying the base port requires that you open the corresponding ports (i.e. the base port and the next x ports, where x corresponds to the number of input channels of the DMNG StreamHub) on your router.



the name (it must include 6 to 20 letters; spaces, special characters and figures are not allowed).



the (it must include 6 to 20 letters; spaces and special characters are not allowed).

④ Click the Save button. ▷ A pop-up window appears and asks if you want to restart the DMNG StreamHub application.

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⑤ Click on Yes to restart the DMNG StreamHub application 10. ▷ Your changes are taken into after restarting the DMNG StreamHub application. ⑥ Update the profile saved for this StreamHub on the field units accordingly. Checking the License The license defines the number of input channels, the number of simultaneous connections allowed to the DMNG StreamHub (for each type of field units), the number of physical and streaming outputs, as well as some options of the DMNG StreamHub application: Record, Intercom, File Transfer and Tally. To check the license applied on the DMNG StreamHub: ① On the side bar, click on Settings. ② Click on General. ▷ The License section shows the number of simultaneous connections allowed for each type of field units and the options allowed on the DMNG StreamHub. Requesting a License Update If your license has expired or if you need additional allowed devices, input channels, physical or streaming outputs or optional functions, you have to request a license update. ① your salesman to help you to define your needs. ② Note down the hardware ID shown in the About section on the bottom left of the page. ③ Send this hardware identifier by email to [email protected]. ▷ AVIWEST will send you a license file with an ".awl" extension.

10

Restarting the DMNG StreamHub application disconnects all the online field units from the DMNG StreamHub and it stops the action(s) in progress on the fields units (Live or Forward) and on the DMNG StreamHub’s outputs.

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Applying a License on the DMNG StreamHub After receiving the updated license file, you have to apply it on the DMNG StreamHub. ① the license file on your computer. ② On the side bar of the DMNG StreamHub, click on Settings. ③ Click on General. ④ Click the Browse button. ⑤ Go to the folder where you saved the license file. ⑥ Select the license file. ⑦ Click the Open button. ⑧ Click the Apply button. ▷ A message prompts you to restart the DMNG StreamHub application. ⑨ Click on Yes to restart the DMNG StreamHub application or restart it later using the Restart button available in the section11. ▷ A success message appears indicating that the license is successfully applied on the DMNG StreamHub. If an error occurred on applying the license, please note down the error message displayed and AVIWEST's team. Changing the s You can change the to access the DMNG StreamHub web page as and as from the section. ① Click the downward arrow in the section. ② Click on . ③ Enter the current . The default is . ④ Enter the new ; it must include 6 to 20 letters. Spaces, special characters and figures are not allowed. ⑤ Confirm your new . ⑥ Click the Apply button. The Apply button is only available when the new is confirmed. ▷ The is modified. 11

Restarting the DMNG StreamHub application disconnects all the online field units from the DMNG StreamHub and it stops the action(s) in progress on the fields units (Live or Forward) and on the DMNG StreamHub’s outputs.

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s can change the to access the DMNG StreamHub web page as . ① Click the downward arrow in the section. ② Click on . ③ Enter the new ; it must include 6 to 20 letters. Spaces, special characters and figures are not allowed. ④ Confirm the new . ⑤ Click the Apply button. This button is only available when the new is confirmed. ▷ The is modified.

Configuring the Media Recorder The Record is an optional function that depends on the license applied on the DMNG StreamHub. It allows to record video streams incoming on the DMNG StreamHub into TS video files. Configuring the Media Recorder consists in automatically activating the record on each channel on DMNG StreamHub application start. ① On the side bar, click on Settings. ② Click on Media. ③ Tick the checkbox located aside Enable Record auto-start to activate the record automatically. ④ Click the Save button.

Configuring the Media Cleaner The Media Cleaner allows cleaning the Media sub folders automatically on a regular basis. ① On the side bar, click on Settings. ② Click on Media. ③ Tick the checkbox located aside Enable media cleaner. ④ In the Days field, set the retention time for the media files saved on the server (in days). ⑤ Click the Save button.

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▷ The files older than the retention time that you configured are automatically deleted from the DMNG StreamHub server.

Configuring the Media Transcoder The video files forwarded by DMNG field units are MP4 or MP4F video files (please see Files Forwarded by DMNG Field Units), except for DMNG APP running on iOS smartphones that forward MOV files. You can configure the DMNG StreamHub to automatically transcode all the video files forwarded by the DMNG APP and DMNG PRO field units to another file format and/or to another frequency. ① On the side bar, click on Settings. ② Click on Media. ③ Tick the checkbox located aside the type of DMNG field unit for which you want to configure the transcoding. The configuration for the files forwarded by DMNG PRO also applies to DMNG RACK field units. ④ Select the output format (MP4 or MOV) and, for DMNG APP only, the output frequency (25Hz, 29.97Hz, 30Hz, 50Hz, 59.94Hz or 60Hz). ⑤ Click the Save button. ▷ The DMNG StreamHub automatically transcodes the video files forwarded by DMNG field units to the selected file format. Note: When the Media transcoder is disabled, the DMNG StreamHub automatically transcodes the MP4F video files into MP4 files when the Forward is complete. When the Media transcoder is enabled, the MP4F files are directly transcoded to the selected file format.

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Configuring the Intercom If the license applied on the DMNG StreamHub allows it, you can use the Intercom function to communicate with field unit s. Connecting the Audio Peripheral Devices Before configuring the Intercom function, you have to connect audio peripheral devices to the DMNG Server: audio rack and/or microphone and headphones. ① If your DMNG server does not have an internal sound card, connect an audio rack, such as the M-Audio M-Track Eight, to the DMNG StreamHub server using one of the USB 2.0 ports of the server. You can connect up to two sound cards only to use the Intercom function, provided that both models are identical. ② Connect a microphone and headphones to the sound card and note down the input(s) and output(s) to which you connect the audio peripheral devices because you need it to configure the Intercom function. ▷ You can now set up the Intercom function from the Intercom configuration page of the DMNG StreamHub application. Setting Up the Intercom As soon as the audio peripherals are connected, you can configure the Intercom function according to your needs. ① On the side bar, click on Settings. ② Click on Intercom. ▷ The Intercom configuration page appears.

③ Select the sound card from the dropdown lists Input device and Output device: 

If the DMNG server has a Xonar DGX internal sound card and if you want to use it for the Intercom, you have to select Xonar DGX. In that case, you can choose the input mode that you want to use: "LINE" or "MIC". Please note that the Xonar DGX sound card only has 1 input connector and 1 output connector (3.5mm RCA jacks), however it has 2 input channels and 2 outputs channels. You can use breakout cables to use both input and output channels on different

36

DMNG StreamHub’s channels. 

If you want to use the M-Audio M-Track Eight audio peripheral device previously connected to the DMNG server, you have to select MTrack Eight: USB Audio. This audio rack has 8 input connectors and 8 output connectors and offers 8 input channels and 8 output channels.

④ For each channel, tick the checkbox(es) corresponding to the hardware input(s) and output(s) to link one or several audio inputs and outputs to the DMNG StreamHub’s channel. For instance, you can select the input 4 (i.4) and the output 6 (o.6). In this configuration, a microphone is connected to the hardware input 4, and headphones are connected to the hardware output 6 as shown below.

Output 6

Input 4

Note: You can select the same hardware input for different channels. This configuration allows communicating to several DMNG field units simultaneously. ⑤ Select the Intercom profile12 that you want to use: 

Low (8kHz – 8kbps)

12

In parenthesis are the audio sampling rate and the audio bitrate for each profile. Please see Bandwidth Used for the Intercom Function to know the bandwidth used by the Intercom function according to the selected profile.

37



Medium (8kHz – 15kbps)



High (16kHz – 20.6kbps)

⑥ Click the Save button. ⑦ Access the Intercom page and click on

to test the volume on each channel.

⑧ Click the Save button. ⑨ If required, you can adjust the volume using the slider controls on the Intercom Settings page. Note: If you want to set the same volume on all the inputs or on all the outputs, tick the checkbox(es) to link the volume sliders for the inputs or for the outputs. ⑩ If needed, tick the checkbox "Enable Intercom auto-start" to activate the Intercom automatically on each channel as soon as a field unit connects to the DMNG StreamHub. ⑪ Click the Save button.

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Configuring the File Transfer (FTP Push) The File Transfer configuration page allows setting one or several FTP servers as destination folders for the files saved onto the DMNG StreamHub13. The File Transfer is a software option that depends on the license applied on the DMNG StreamHub. According to the license, you can configure and use up to 8 FTP servers. ① On the side bar, click on Settings. ② Click on File Transfer. ▷ The File Transfer configuration page appears. ③ Enter a name in the first field. ④ In the Host field, type the Hostname of the destination FTP server. ⑤ In the Port field, type the port number to push files toward the FTP server. Note: If the mode is set to IVE, you have to configure the port according to the configuration of the destination FTP server. ⑥ In the name field, type the name to authenticate to the destination FTP server. ⑦ In the field, type the to authenticate to the destination FTP server. ⑧ Select the ACTIVE or IVE mode. Note: The active mode is not suitable if there is a firewall between the DMNG StreamHub server and the FTP server. ⑨ In the Path field, type the path toward the folder where the files will be transferred. E.g. let this field blank or type "/" (slash character) to set the root folder of the FTP server as destination. ⑩ In the Rules field, define the type(s) of files that you want to be transferred automatically to the destination FTP server that you are configuring14. E.g.: Rule

13

Result

*

To transfer all the files received, recorded or transcoded by the DMNG StreamHub.

*mp4

To transfer mp4 files only.

*mp4,*mov

To transfer mp4 and mov files.

i.e. the files forwarded by field units as well as the files recorded and transcoded by the DMNG StreamHub.

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record*

To transfer all the files recorded by the DMNG StreamHub.

transcod*

To transfer all the files transcoded by the DMNG StreamHub.

⑪ If needed, tick the checkbox "Delete file after transfer" to automatically delete the files from the DMNG Streamhub after that they have been transferred. ⑫ Click the Save button. ⑬ Click the Test FTP button to make sure that the DMNG StreamHub can connect to the FTP destination.

Configuring a Watch Folder The DMNG StreamHub embeds an FTP server and a Samba server. You can then set up a watch folder application to automatically files from the DMNG StreamHub server to your workflow. Here, the DMNG StreamHub is the file server; and the computer running the script to the files from the DMNG StreamHub server is the client. ① To do so, you have to know: 

The IP address of the DMNG StreamHub server (shown in the About section of the DMNG StreamHub Application). o If the client is on the same LAN as the DMNG StreamHub server, use the local IP address. o If the client is not on the same LAN as the DMNG StreamHub server, use the public IP address.



The folder in which are saved the files on the DMNG StreamHub server is: \data\media



The is:



The default 15 is:

② Make sure that the network configuration of the DMNG StreamHub server is suitable (see Checking the Network Configuration).

15

This is also the to access the server’s settings menu. To change it, please refer to the DMNG StreamHub Installation and Maintenance Guide.

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Updating the DMNG StreamHub Application s only can update the DMNG StreamHub application. Note: Updating the DMNG StreamHub application disconnects all the online field units from the DMNG StreamHub and it stops the action(s) in progress on the fields units (Live or Forward) and on the DMNG StreamHub’s outputs. To update the DMNG StreamHub software application: ① the new DMNG StreamHub application on the computer you are using to access the DMNG StreamHub web page. ② Click the downward arrow in the section. ③ Click on Update StreamHub. ▷ A new window prompts you to browse the computer in order to select the “.fw” software version. ④ Click the Browse button. ⑤ Browse your computer to select the software version. ⑥ Click the Update button. ▷ The DMNG StreamHub application restarts after the update.

References About Section The About section of the DMNG StreamHub application, located on the bottom left corner of the web page, provides general information about the DMNG StreamHub, namely: Connections Offline StreamHub s

the number of field units connected to the DMNG StreamHub the number of free input channels the number of s and s logged in to the DMNG StreamHub web page

Public IP

the public IP address assigned to the DMNG StreamHub

Local IP

the local IP address of the DMNG StreamHub

Firmware version the firmware version of the DMNG StreamHub StreamHub ID the StreamHub identifier Hardware ID

the hardware identifier

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Capped Bitrate Please note that there is a minimum and maximum video bitrate for each video resolution for video streams coming from DMNG PRO and DMNG RACK field units: Video Resolution HD

Min. Video Bitrate

Max. Video bitrate

1,500kbps

10,000kbps**

SD

800kbps

6,000kbps

HHR

300kbps

4,000kbps*

CIF

200kbps

2,000kbps*

QVGA

100kbps

1,000kbps*

Notes * For low resolutions, the video bitrate is automatically capped at the maximum value. ** 10,000kbps is the maximal video bitrate for HD video resolution. However, if the autorecord is activated on the DMNG PRO, the maximal video bitrate is 6000kbps for both the Live transmission and the video recording.

Note on File Formats Files Forwarded by DMNG Field Units The files forwarded by DMNG PRO, DMNG RACK and DMNG APP running on Android smartphones using the Store or the Auto-record function are MP4 video files with embedded audio. For DMNG PRO and DMNG RACK field units, if the Store profile used is configured with the fragmented recorder mode, they generate MP4F video files and the DMNG StreamHub automatically transcodes the MP4F files into MP4 files when the Forward is complete (automatically means that you do not have to configure and use the Media transcoder). The files forwarded by DMNG APP running on iOS smartphones are MOV video files with embedded audio. According to the configuration of DMNG StreamHub application (please see Configuring the Media Transcoder), the DMNG StreamHub can also transcodes the files forwarded by DMNG field units to another file format and/or to another frequency (in Hz). Files Recorded by the DMNG StreamHub Using the Record function, the DMNG StreamHub records the incoming videos in TS files.

Bandwidth Used for the Intercom Function Here is the bandwidth used per channel for the Intercom according to the Intercom profile: 

Low:

11kbps



Medium:

18kbps



High:

23.6kbps 42

Streaming Output Good Practices In order to obtain the best possible results through the DMNG StreamHub’s streaming outputs, please follow the below guidelines. ① Make sure that the license applied on the DMNG StreamHub includes the streaming output feature. ② Draw a network architecture diagram to understand the whole chain and identify potential network bitrate bottleneck(s). ③ Choose the proper streaming protocol according to: 

the location of the targeted audience,



the network architecture (LAN with or without firewall, WAN),



the final points (CDNs, media servers or IRDs, types of devices and players).

④ Adjust the settings on the DMNG PRO or DMNG RACK field unit according to the streaming protocol that you want to use: 

For RTMP, HLS or RTSP: o We recommend using a progressive source: 720p highly recommended. o We strongly recommend setting the video type to progressive on the field unit. o Set the aspect ratio to 16/9. o To encode the audio in AAC-LC:





Set the audio mode to stereo



Set the audio bitrate at 65kbps minimum.

For TS/IP: o H264 video encoding and AAC audio encoding (dual mono recommended, audio bitrate in the range 65-256kbps) o Using a live profile with the CBR video bitrate mode is recommended (unless the DMNG PRO uses cellular links to stream toward the StreamHub)

⑤ In the Live profile configured on the field unit (from its Web Configurator), set the video bitrate according to the clients speed. ⑥ Make sure that the speed of the DMNG StreamHub is sufficient. Please refer to the DMNG StreamHub Installation Guide. ⑦ We strongly recommend performing a test before the event.

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Troubleshooting If you experience troubles with the DMNG StreamHub application, this section may help you solve some issues.

Viewing the Logs The Logs page lists information, errors and warnings. You can filter the events according to the type using the checkboxes located on the top of the page. You also can the logs using the button. The Logs page is cleared after a restart of the DMNG StreamHub application and after a reboot of the server. However, the able log file always includes the events occurred over the past 7 days.

Getting a Report File AVIWEST’s team often asks for a report file. To generate a report file from the DMNG StreamHub application: ① Click the downward arrow in the section. ② Click on Get report. ▷ A message prompts you when the report is ready. ③ Click on to the file on your computer. ▷ You can now send the report file by email to [email protected].

Restarting the DMNG StreamHub Application Note: Restarting the DMNG StreamHub application disconnects all the online field units from the DMNG StreamHub and it stops the action(s) in progress on the fields units (Live or Forward) and on the DMNG StreamHub’s outputs. Sometimes restarting the DMNG StreamHub application can solve them. To restart the DMNG StreamHub software application: ① Click the downward arrow in the section. ② Click on Restart StreamHub. ▷ A message prompts you to confirm. ③ Click on Yes to confirm. ▷ The DMNG StreamHub application restarts.

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Troubleshooting Streaming Outputs Issue RTMP Improper URI DNS issue

Solution(s)

Cause(s) The URI configured in the Streaming output settings is malformed. No DNS server configured on the DMNG StreamHub server. The DNS server does not send any address for the domain name.

The DNS server does not exist or it is not responding.

Host unreachable

The RTMP server cannot be reached.

Connection refused

The domain name or the IP address configured in the URI is incorrect (e.g. it can be another server). The distant server is started, however the RTMP service is not started. Port issue

On the DMNG StreamHub, access the streaming output settings page and type a valid URI. (e.g. a valid URI does not end with a slash character "/"). Access the DMNG StreamHub server’s settings menu (please refer to the DMNG StreamHub Installation Guide) in order to :  check whether a DNS server is configured or not,  configure a DNS server. The DMNG StreamHub tries to establish a connection every 30 seconds. If the problem persists:  On the DMNG StreamHub, access the Streaming output settings page and check that the domain name included in the URI is correct.  Use the "ping" command, from a computer with the same network configuration as the DMNG StreamHub server (i.e. which is on the same LAN, with the same gateway and the same DNS server configured) to checks whether the domain name does exist on the DNS server. The DNS server may be temporarily not responding, for instance if an update is in progress. To check the availability of the DNS server configured on the DMNG StreamHub server :  Access the DMNG StreamHub server’s settings menu (please refer to the DMNG StreamHub Installation Guide) in order to check the DNS server which is configured.  Use the "ping" command, from a computer with the same network configuration as the DMNG StreamHub server (i.e. which is on the same LAN, with the same gateway and the same DNS server configured) to checks whether the DNS server responds or not. The DMNG StreamHub tries to establish a connection every 30 seconds. If the problem persists:  If the RTMP server is not on the same LAN as the DMNG StreamHub server: Use the "ping" or "trace route" command, from a computer with the same network configuration as the DMNG StreamHub server (i.e. which is on the same LAN and with the same gateway configured) to check the Internet connection of the DMNG StreamHub.  If the RTMP server is on the same Lan as the DMNG StreamHub server : Use the "ping" or "trace route" command from a computer with the same network configuration as the DMNG StreamHub server (i.e. which is on the same LAN and with the same gateway) to check the network used for the connection of the DMNG StreamHub to the RTMP server.  If possible, check whether the RTMP server is started or not. On the DMNG StreamHub, access the streaming output settings page and check that the IP address and domain name are those of the RTMP server to which the stream should be directed. Start the RTMP service. Check the port configured on the RTMP server for the RTMP service If the port configured on the RTMP server is not the default one (i.e. T 1935), access the streaming output settings page of the

45

DMNG StreamHub and modify the URI in order to mention the port in it (please see Configuring an RTMP Output). Connection timed out Not RTMP server

RTMP stream refused

Connection lost

Overrun error

No ICMP response received after the RTMP connection request of the DMNG StreamHub client. A service does exist for the URI (address and port), however it is probably not an RTMP service.

The stream name is already used (e.g. trying to publish a stream that is already published on a Wowza server configured with the option "Duplicate Stream Names")

The DMNG StreamHub tries to establish a connection every 30 seconds. If the problem persists: Check the network, especially if a firewall or a proxy server could block the stream without sending any ICMP message. Access the streaming output settings page of the DMNG StreamHub and check the URI configured for this RTMP server, it may be the URI of another server and/or the port included in the URI is incorrect. For instance, if the RTMP server with the hostname "youtube.com" has a web service, using T port 8888, and an RTMP service, using T 1935: The URI "rtmp://youtube.com :8888/live/stream" directs toward the web service of the server (because the port 8888 is dedicated to the http service and not to the RTMP service) In this example, in order to fix the issue, delete the port number (":8888") from the URI, or replace it with the port corresponding to the RTMP service, which is ":1935". Stop the other client using the stream name.

The stream name/ application name / instance name is incorrect (on Youtube Live for instance) The T connection between the DMNG StreamHub server and the RTMP server has been lost during the transmission. The RTMP connection does not have a sufficient network bitrate to transmit the incoming stream to its clients.

Check the RTMP URI: the instance name, if any, the application name and the stream name.

The latency is too low.

Access the streaming output settings page of the DMNG StreamHub and increase the delay for the TS output.

The incoming stream bitrate is too high regarding the TS bitrate configured on the TS output settings.

Several potential solutions:  If the incoming live directed to the TS output is configured with the VBR bitrate mode, you can lower the video bitrate from the channel page using the slider control.  Access the streaming output settings page of the DMNG StreamHub and increase the TS bitrate and/or the delay for the TS output. To set the TS bitrate, please read the recommendations provided in Configuring a TS over IP Output.

Look at the error code returned on next connection: the connection error message appears about 30 seconds after the le message "connection lost". The DMNG StreamHub tries to establish a connection every 30 seconds. If the problem persists:  If the Live profile configured on the field unit is on VBR mode, lower the video bitrate using the slider control "capped bitrate" which is on the channel page of DMNG StreamHub.  If the Live profile configured on the field unit is on CBR mode, stop the Live transmission on the field unit and select another Live profile configured with a lower video resolution. Then, restart the Live transmission on the field unit.  Increase the bitrate of the Internet connection: speed of the RTMP server and/or the speed of the DMNG StreamHub.  Find a potential network disrupting element (for instance another traffic, e.g. a TS stream, consuming the bandwidth).

TS over IP The video freezes (client side) Many dropped packets on the TS output

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

Network is overloaded

 

Check the whole chain, from the field unit to the DMNG StreamHub and from the DMNG StreamHub to the IRD, to try to identify a potential network disrupting element (for instance another traffic consuming the bandwidth). Make sure that the speed of the DMNG StreamHub is sufficient (for more details, please refer to the DMNG StreamHub Installation Guide). Make sure that the speed of the IRD is sufficient to receive the stream.

RTSP No video on the player

There is a proxy, gateway or firewall on the LAN to which is connected the client device

Configure the player to request RTSP over T (interleave mode). For instance, on VLC: go to "tools > preferences > (Show all settings) > Input / codecs > demuxers > RTP/RTSP" and tick "use RTP over RTSP (T)".

Troubleshooting Intercom Issue

Solution(s)

Cause(s) Not allowed by license Input: not configured Output: not configured Error on Intercom (Input/Output: invalid configuration)

The Intercom function is not available because the license does not allow it. You need to request a license update, please your salesman. Access the Intercom settings page of the DMNG StreamHub and configure the input and/or the output. (Please see Configuring the Intercom).   

Check that the sound card is properly connected to one of the USB 2.0 ports of the DMNG StreamHub server. (Note: the DMNG StreamHub does not have USB 3.0 ports.) Access the Intercom settings page of the DMNG StreamHub and check the configuration of the inputs and outputs for the Intercom Function (please see Setting Up the Intercom). Restart the DMNG StreamHub application.

Troubleshooting Record Issue

Solution(s)

Cause(s) Not allowed by license No more space left on disk

The Record function is not available because the license does not allow it. You need to request a license update, please your salesman. The internal hard drive disk(s) of the server is full.

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Glossary EN

Definition

MCR

Stands for Master Control Room, defines TV stations or broadcast facilities where DMNG StreamHub receivers are installed and/or used.

Field units

Products and solutions used by journalists to transmit video content in a DMNG ecosystem, which includes DMNG PRO, DMNG RACK or smartphone using the DMNG APP.

Channel

DMNG StreamHub's inputs

CDN

Stands for Content Delivery Network

IRD

Transcoding

Stands for Integrated receiver Decoder Technic where the video output of one source, or a specific reference signal from a signal generator, is used to synchronize other sources together, making the signals synchronous. Process of changing the format of video and audio through a partial decode and re-encode.

File Transfer

Optional function allowing the file transfer from the DMNG StreamHub server to one or several FTP servers.

Intercom

Optional function allowing the DMNG StreamHub and the field unit s to communicate with one another.

Tally Light

Optional function designed to indicate the on-air status of video signals. To operate, this function requires a GPI.

Capped bitrate

Maximum video encoding bitrate authorized by the encoder (in kbps, kilobit per second) when the encoder mode is set on VBR

Hostname

Text string which consists of the machine name and the domain name Stands for Real Time Protocol End-to-end real-time delivery services including payload type identification, sequence numbering, time-stamping and delivery monitoring Stands for Real Time Streaming Protocol Most appropriate protocol to stream toward CDNs and media servers (e.g. Youtube, Wowza Streaming Engine). Stands for Real Time Streaming Protocol Application-layer protocol used for the control of real-time streaming data between end points. Stands for HTTP Live Streaming Adaptive streaming protocol developed by Apple. Ideal candidate for streaming to the widest range of mobile devices over LAN or WAN. Also known as MPEG-2 Transport Stream over UDP Standard container format used in various broadcast systems, such as IPTV. TS/IP allows streaming video and audio content from the DMNG StreamHub to an IRD (Integrated Receiver Decoder) over WAN or LAN or to another DMNG StreamHub. Stands for Packet Identifier A unique integer value used for associating elementary streams of a program in a single - or a multi-program transport stream. Stands for Program Map Tables Program specific information about other frequencies that make up the total package. Stands for Program Clock Reference A time stamp in the Transport Stream from which decoder timing is derived.

Genlock

RTP RTMP RTSP HLS TS/IP PID PMT PCR

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