DF4510HD | DF4910HD | DDF4510HDV-IM/-SM | DDF4910HDV-IM/-SM
www.dallmeier.com 34
Note the explanations below.
Hide the title bar (A) if required.
Change the Connection method (D) if required.
Adjust the live video resolution (E) if required.
Enable the live audio output (F) if required.
The video resolution setting mentioned above only affects the live video display in the
web browser and is not related to the encoder settings.
Live audio is only available for logged in users or user groups. Furthermore, audio encod-
ing has to be enabled (see section “Audio In” on page 67).
Connection Method
If the network connection to the device is established via a router/gateway with NAT (Net-
work Address Translation) function, the live video may not be shown in the web browser.
In this case, two solutions are available:
The router/gateway has to be congured for a correct address translation of data packets
sent by the User Datagram Protocol (UDP).
UDP is by default used by the streaming function of the device.
An easier solution is to select TCP from the drop-down list Connection method.
In this case, the device switches the protocol of the streaming function to the
Transmission Control Protocol (TCP).
To receive the data packets, the port 30000 for the DaVid Protocol
3)
and port 80 for the
Hypertext Transfer Protocol (HTTP) must be open.
Note that during the data transmission via TCP
• normally no packet loss (lack of images) occurs.
• short-term peaks in network trafc may occur.
• low delays may occur.
The “Connection method” described above does not affect the streaming function (see
section “Streaming” on page 50).
3) Dallmeier Video Protocol
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