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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.
H.264 Network Video Streaming Server
NVS-25
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