Data Video NVS-25 User manual

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Contents
Warnings and Precautions ____________________________ 5
Warranty__________________________________________ 6
Standard Warranty _____________________________________ 6
Two Year Warranty _____________________________________ 6
Disposal___________________________________________ 6
1. Product Overview ______________________________ 7
1.1 Features _________________________________________ 7
2. Front Panel____________________________________ 8
3. Rear Panel ____________________________________ 9
4. System Diagram_______________________________ 10
5. NVS-25 Network Video Streaming Server Setup _____ 11
5.1 Connect live video and audio to NVS-25_______________11
5.2 Connect NVS-25 to the local IP network _______________11
5.3 Connect power to NVS-25 __________________________11
5.4 Select the input connection to be streamed____________ 11
6. How to find the NVS-25 on an IP network __________ 12
6.1 How to use the NVS25 IP Finder utility software ________12
6.2 Use the NVS25 IP Finder utility software to search a
different network _____________________________________14
7. NVS-25 login using a web browser ________________ 15
7.1 Default Login Details ______________________________15
7.2 Live Option ______________________________________16
7.3 Record Option ___________________________________16

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7.4 Status Option ____________________________________ 16
7.5 Settings Option __________________________________ 16
8. Setting > Live Stream Setup - Protocols ____________ 17
8.1 HLS Protocol _____________________________________ 17
8.2 RTSP Protocol ____________________________________ 17
8.3 RTMP Protocol ___________________________________ 17
8.4 Stream Server Selection____________________________ 17
8.5 RTMP Publish URL ________________________________ 19
9. Setting > Encoder Setup ________________________ 21
9.1 Input Source Selection_____________________________22
9.2 Video Tuning ____________________________________ 22
9.3 Image Size_______________________________________ 23
9.4 H.264 Encode ____________________________________ 23
9.5 Group of Pictures _________________________________24
9.6 Video Bitrate/Mode ______________________________ 26
9.7 Audio Setup _____________________________________28
10. Setting > Network Setup ________________________ 29
10.1 DHCP Enable ___________________________________ 29
10.2 DHCP Disable __________________________________ 29
11. Setting > Firmware Update ______________________ 30
12. Setting > Account Setup ________________________ 31
13. Setting > Restore Default _______________________ 32
Restore Factory default via STM button ____________________34
14. Recording the stream to USB 2.0 media____________ 34

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15. Status > Device Information _____________________ 34
15.1 USB Storage Information _________________________ 34
15.2 Stream Information _____________________________ 35
16. Streaming Examples ___________________________ 36
16.1 HTTP Live Streaming (HLS) Protocol_________________ 36
16.2 Real Time Streaming Protocol (RTSP) _______________ 37
16.3 Real Time Messaging Protocol (RTMP) ______________ 38
16.3.1 NVS25-USTREAM Connection Configuration ____________ 40
16.3.2 NVS25-WOWZA Server Connection Configuration _______ 41
16.3.3 NVS25-Youtube Connection Configuration _____________ 43
17. Port Forwarding on your Firewall / Router _________ 49
18. LED Status & Button Behaviour __________________ 49
18.1 LED Status _____________________________________ 49
18.2 Button Behaviour _______________________________50
19. Frequently-Asked Questions _____________________ 50
20. Specifications_________________________________ 51
Service & Support __________________________________ 52
Disclaimer of Product & Services
The information offered in this instruction manual is intended as a guide only. At all
times, Datavideo Technologies will try to give correct, complete and suitable information.
However, Datavideo Technologies cannot exclude that some information in this manual,
from time to time, may not be correct or may be incomplete. This manual may contain
typing errors, omissions or incorrect information. Datavideo Technologies always
recommend that you double check the information in this document for accuracy before
making any purchase decision or using the product. Datavideo Technologies is not
responsible for any omissions or errors, or for any subsequent loss or damage caused
by using the information contained within this manual. Further advice on the content of
this manual or on the product can be obtained by contacting your local Datavideo Office
or dealer.

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

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Warranty
Standard Warranty
•Datavideo equipment is guaranteed against any manufacturing defects for one year
from the date of purchase.
•The original purchase invoice or other documentary evidence should be supplied at
the time of any request for repair under warranty.
•Damage caused by accident, misuse, unauthorized repairs, sand, grit or water is
not covered by this warranty.
•All mail or transportation costs including insurance are at the expense of the owner.
•All other claims of any nature are not covered.
•Cables & batteries are not covered under warranty.
•Warranty only valid within the country or region of purchase.
•Your statutory rights are not affected.
Two Year Warranty
•All Datavideo products purchased after 01-Oct.-2008
qualify for a free one year extension to the standard
Warranty, providing the product is registered with
Datavideo within 30 days of purchase. For information on
how to register please visit www.datavideo.com or contact
your local Datavideo office or authorized Distributors
•Certain parts with limited lifetime expectancy such as LCD Panels, DVD Drives,
Hard Drives are only covered for the first 10,000 hours, or 1 year (whichever comes
first).
Any second year warranty claims must be made to your local Datavideo office or one of
its authorized Distributors before the extended warranty expires.
Disposal
For EU Customers only - WEEE Marking
This symbol on the product indicates that it will not be treated as
household waste. It must be handed over to the applicable take
back scheme for the recycling of Waste Electrical and Electronic
Equipment. For more detailed information about the recycling of
this product, please contact your local Datavideo office.

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1. Product Overview
NVS-25 is a broadcast quality H.264 network streaming server. This unit serves the
purpose of sharing HD or SD video over local or global IP networks. Equipped with
HDMI, SDI and Composite Video interfaces, NVS-25 is designed for live event
streaming at up to 6Mbps. NVS-25 supports the following streaming protocols:
•HLS [HTTP Live Streaming]
•RTP / RSTP
•RTMP [Local/Publish]
NVS-25 can be set up and controlled using almost any devices with a web browser.
Users are allowed to configure real time audio and video streaming on the web-based
graphical user interface. The encoded video stream can be delivered to a single
browser, a group of clients on a Local Area Network (LAN) or even a Content Delivery
Network (CDN).
The Core Value of Datavideo, sharing the value!
1.1 Features
•Broadcast quality HD / SD H.264 network streaming
•Quick and easy setup
•H.264 Encoding
Video Inputs - Choose from:
•HD / SD-SDI [BNC]
•HDMI
•CVBS [BNC]
Audio Inputs:
•Unbalanced RCA Phono sockets
•or
•Balanced 3pin XLR
Encoded Video Stream:
•H.264 / AVC up to High Profile Level 4.0
•Up to 1920x1080 @ 30 fps
•Configurable bitrate up to 6Mbps
Control
•Web user interface for configuration and control

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2. Front Panel
Power On/Off Switch
Switches the power On / Off
USB
USB 2.0 interface for connecting external storage
Mode Select
Mode Button - Select Input source between
CVBS / SDI / HDMI.
REC – Displays the recording status
STM – Displays the stream server status
PWR – Displays the power status
See the section on LED Status & Button Behaviour
RECORD
Turns ON/OFF the recording feature
STM
Turns ON/OFF the network streaming feature
Note: Before using this button, the user should first make
sure the network and stream settings are properly
configured.
Restore factory defaults from the front panel.
From power off. Press and hold the STM button and turn
on the NVS-25 power; keep holding the STM button for 40
seconds. When released, the NVS-25 will take a further 30
seconds to finish the boot-up process. Remember to login
with the default username and password (Default Login
Details).

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3. Rear Panel
AUDIO IN (XLR)
Supports two channels XLR Balanced Audio Input.
AUDIO IN (RCA)
RCA stereo for a line level auxiliary analogue audio source,
such as a CD player or tape deck. If you are using more than
two sources via an external audio mixer, connect the audio
mixer’s line level output to this unbalanced audio input.
HDMI IN
HDMI digital signal input connector.
CVBS IN
Composite video input: takes a BNC connector from the
composite output of a VCR, camera, DVD player, etc.
SDI IN
BNC connector for SDI input.
Ethernet Port (RJ-45)
10/100M base Ethernet Network interface
DC In Socket
Connect the supplied 12V PSU to this socket. The connection
can be secured by screwing the outer fastening ring of the DC
In plug to the socket.

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4. System Diagram

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5. NVS-25 Network Video Streaming Server
Setup
The NVS-25 is designed to act as an interface between video source equipment and the
IP network as depicted in the System Diagram.
5.1 Connect live video and audio to NVS-25
Refer to Rear Panel section for connection of your live video and audio source cabling
to the rear panel of the NVS-25.
5.2 Connect NVS-25 to the local IP network
Refer to Rear Panel for connection of the NVS-25 to the local IP network via RJ-45
Ethernet cable. The local IP network could be from an office LAN face plate on the wall
or an existing LAN network router / switch.
5.3 Connect power to NVS-25
The NVS-25 comes with its own power supply unit which is plugged into a normal
wall/power outlet. The device can also receive power from Datavideo’s PD-2 power
distribution unit. PWR LED indicator on the front panel of the NVS-25 should be flashing
red after being switched on. It takes approximately one minute for the unit to start and
the boot-up process is complete when PWR LED indicator turns to constant green.
5.4 Select the input connection to be streamed
The MODE button on the front panel of the NVS-25 is used to select the live video input
connected to the rear of the unit. Press this button to cycle through HDMI, SDI and
Composite [CVBS].
Each time the button is pressed, an LED will be lit for the selected source. The default at
power on is HDMI. If no source video is detected, the LED will be flashing red. If a live
video source is detected, the LED will be changed to solid green.
The STM or stream LED will become solid green once the unit is correctly configured by
IP connected computer.

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6. How to find the NVS-25 on an IP network
As illustrated in the System Diagram, the NVS-25 is designed to act as an interface
between video source equipment and the IP network.
By default, the NVS-25 will try to obtain an IP Address from the DHCP network
server once physical network connection has been established. This can be later
changed to True Static IP mode if required.
6.1 How to use the NVS25 IP Finder utility software
Datavideo provides a free, Windows
based utility, called NVS-2X IP Finder.
You need to make sure that IP Finder
Utility will not be blocked by computer firewall or anti-virus software the first time the
utility is run on the computer. The utility must be able to scan or search the local network.
After opening the NVS-25 IP Finder Utility, the computer IP address is displayed in the
“Local IP Address” pull-down menu of the utility window. Make a note of the IP
Address for the computer.
When the utility scans the LAN that the computer is connected to, it will display the IP
and MAC addresses of all the NVS-25 units found on this local area network. Make a
note of the NVS-25 IP Address. In this case, the IP address of the NVS-25 is
192.168.1.100. However, please note that the actual IP address may differ from the
example shown below.

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If your computer has two Ethernet cards which are respectively connected to two
different network domains, by clicking the “Local IP Address” pull-down menu, you will
then be able to select the network that you would like to scan. In the example below, we
have selected the 192.168.0.X network. The IPs shown are IPs of the Ethernet cards.

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If you are using an Apple computer then you can use an alternative utility app such as
Fing or Network Analyzer Lite.
6.2 Use the NVS25 IP Finder utility software to
search a different network
The NVS-25 IP finder allows the user to search for the NVS-25 device which is
connected to a different network from which the computer terminal is connected to.
To use the NVS-25 IP finder to search a different network, simply enter the IP of the
NVS-25 installed on another network into the “Local IP Address” pull-down menu as
shown in the diagram below. Click on the “Scan”button and once the NVS-25 device is
found, the IP finder will display the IP and MAC addresses of the device found. However,
before you do this, consult your local network administrator or IT department for proper
network configuration (bridging two different network domains).

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7. NVS-25 login using a web browser
By now, we have obtained the IP addresses of the computer and the NVS-25. If both
devices are assigned the IP addresses with the same network prefix, we should be able
to use any web browser to login and configure the NVS-25.
Compatible browsers such as Google Chrome, Firefox, Opera or even Safari can be
used. Please note that Internet Explorer can also be used, but you may need to
enable compatibility view and pop-up windows on the browser first.
Type the NVS-25 IP address into the browser address bar. Remember to include the
dots between the four octets. After hitting the “enter” key, you will then be prompted to
enter the login information on a pop-up window.
7.1 Default Login Details
All NVS-25 units are delivered from the factory with the same default username and
password. This can be changed at a later stage to suit your needs.
Username = admin Password = 000000 [Six Zeros]
Please refer to Account Setup section for instructions on how to change the default login
information.
Once we are logged into NVS-25, we will be automatically directed to the Home Page
shown below. Four options are available on this page: Live, Record, Status and Settings.

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7.2 Live Option
On the Live option page, the user can retrieve live video stream link and enter the link
into a video streaming application such VLC player or view the live video stream on a
local area network. Please refer to Live Stream Setup section for more information.
7.3 Record Option
On the Record option page, the NVS-25 can be configured to connect to an external
USB 2.0 hard drive or pen drive. When the USB storage device is connected, NVS-25
can then record video to the device. The recording time is dependent on the recording
bit rate and the free space available on the USB device. Please refer to Record Option
for more information.
7.4 Status Option
The Status Option displays the current stream settings in use.
7.5 Settings Option
Six setting options can be checked on this page:
•Live Stream Setup
•Encoder Setup
•Network Setup
•Firmware Update
•Account Setup
•Restore Default

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8. Setting > Live Stream Setup - Protocols
It is always preferable to decide what stream setting best matches your purpose of use
as well as the network and protocol before streaming video via the NVS-25.
8.1 HLS Protocol
Use the NVS-25 to feed IP video stream to several Apple computer clients or tablet
computers such as iPad, iPhone or MacBook running Safari browser. HLS feeds video
and audio streams to the iOS devices. Note that, depending on the settings chosen,
HLS latency may be up to 10 seconds in case of live events.
8.2 RTSP Protocol
Use the NVS-25 to feed IP video stream [TCP , HTTP] to a small group of clients on a
Local Area Network (LAN) or Wide Area Network (WAN). The user can then view the
video via free client software such as VLC Player. However RTSP does not work well
with some tablet computers. RTSP is open for viewing by anyone on the same
network with the streaming details or link. It can be sent across the internet, but each
client added will add data loading to the NVS-25, as each video stream is set up
individually for each client. RTSP has a limitation of three viewing clients before the
NVS-25 becomes congested and video stream fails.
8.3 RTMP Protocol
Use the NVS-25 to deliver a single IP video stream [TCP] to a server on a Wide Area
Network [WAN] like the internet (RTMP Publish) or to a small group of clients on a
private Local Area Network [LAN] (RTMP Local).
The server on the WAN could be the server of a Content Delivery Network [CDN],
such as Ustream. To use a CDN, you may need to register for a free / trial account with
additional costs first. The user just need to deliver one video stream to the CDN and that
IP video feed will be shared among multiple viewers. This means less work for you and
the NVS-25 as well. CDNs differ in tariffs and the way they operate so it is best to do
your homework beforehand.
The server on a WAN could also be your own Wowza server. Wowza server is another
form of CDN solution, typically for large organizations, where you brand the look and
feel of the delivery network plus the video stream itself. Again it is best to do your
homework beforehand.
8.4 Stream Server Selection
This pull-down menu allows you to either select one of three transmission protocols
[HLS, RTSP (TCP, HTTP), RTMP (Local, Publish)] or switch off the current video stream.
The default is stream off.

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After the preferable stream server is selected, the user can also enable the Stream
Schedule function by checking the “Enable Schedule Stream” box and then select the
time to the first stream time as well as its cycle.
The “First Time” option allows you to select the time to the first stream time. Select
number of days from the first pull down menu, number of hours from the second pull
down menu and number of minutes from the third pull down menu. For example, if the
current time is 09:57 on Wednesday and the scheduled stream time is 12:00 on
Saturday, you should select 3 Days from the first pull down menu, 2 Hours from the
second pull down menu and 3 Minutes from the third pull down menu.

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The “Repeat Every” option gives the user the ability to set the frequency of the stream
after the stream time is determined. Again, select number of months from the first pull
down menu, number of days from the second pull down menu and number of hours
from the third pull down menu. For example, if you would like to repeat the stream every
12 hours, simply click the second pull down menu and select 12 Hours.
After all settings are determined, click the Apply button.
NOTE:All settings applied will not be in effect unless the Apply button has been clicked
and the NVS-25 configuration progress bar indicates 100% completion.
The user can also enable “Auto stream at startup” so that the original settings persist
through the power cycle process.
8.5 RTMP Publish URL
Two options and four text bars will appear when RTMP Publish is selected under the
Stream Server Selection Option. Enable the desired options and enter the
corresponding information to stream your video to your Content Delivery Network.
•Audio Only: Check to enable Audio Only streaming (Enable Pattern
Generator accompanying this setting; Pattern Generator generates color
bars when video signals are absent and can be enabled in Encoder Setup

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under the Settings Option)
•Anevia Server: Check to enable Anevia Server if the traditional publish
method fails. Once enabled, the maximum video bitrate is 3Mbps.
•RTMP URL: Enter the RTMP Publish URL for your WAN-based server or
CDN account
•RTMP Stream: Name of the streaming video
•RTMP Username: Username of CDN account
•RTMP Password: Password of CDN account
If you wish to view the RTMP stream directly from the NVS-25 on the local area network
(LAN) using the Live option, select RTMP Local option.