User`s manual

Moxa VPort 16-M12 Accessing the VPort 16-M12’s Web-based Manager
3-3
2. Protocol Options: Choose one of four protocols to optimize your usage—Multicast (RTSP or Push) or
Unicast (UDP, TCP, HTTP).
• Multicast protocol can be used to send a single video stream to multiple clients. In this case, a lot of
bandwidth can be saved since only one video stream is transmitted over the network. However, the
network gateway (e.g., a switch) must support the multicast protocol (e.g., IGMP snooping). Otherwise,
the multicast video transmission will not be successful.
 RTSP: Enable the multicast video stream to be sent in RTSP control, which means the multicast video
stream will be sent only it receives the client’s request.
 Push: Enable the multicast video stream to be sent in Push control, which means that after this setting
is selected the multicast video stream will be sent continuously even without any client request.
• Unicast protocol is used to send a single video stream to one client.
 UDP can be used to produce audio and video streams that are more real-time. However, some packets
may be lost due to network burst traffic, and images may become blurred.
 TCP can be used to prevent packet loss, which results in a more accurate video display. The downside
of using TCP is that the real-time delay is worse than with UDP protocol.
 HTTP can be used to prevent being blocked by a router’s firewall. The downside of using HTTP is that the
real-time delay is worse than with UDP protocol.
• Network Interface designates the connection interface for multicast video streams selection. The box
lists the current NIC interfaces. Select which NIC interface will receive multicast streams.
Once the IP camera is connected successfully, Protocol Options will indicate the selected protocol. The selected
protocol will be stored on the user’s PC, and will be used for the next connection.
NOTE
For multicast video stream settings, please refer to
System Configuration

Network

Multicast.
System Configuration
A button or text link on the left side of the system configuration window only appears on the administrator’s
main page. For detailed system configuration instructions, refer to Chapter 4, System Configuration.
Video Information
Users can easily monitor the current video performance by looking at the Video Information shown on the
left side of the homepage. The following properties are shown: Video Size, Video Quality (Fixed bit rate or Fixed
video quality), Max. FPS (frames per second), and (current) FPS Status. Users can select the target camera
image to view each camera’s video performance.