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Operating the Camera
Switching TCP/UDP Transmission Mode
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Switching TCP/UDP
Transmission Mode
You can select TCP or UDP as the communication port
for video/audio data.
This function can be used when Mode (video codec
mode) is set to MPEG4 or H.264 and the ActiveX
Viewer is used.
Notes
• The function may not operate correctly if you use
personal firewall software or antivirus software on
your computer. In that case, disable the software or
select the TCP mode.
• If you are using Windows XP Service Pack 2 or later,
or Windows Vista, disable “Windows Firewall.” For
details, see “Configuring Windows Firewall” in
“When using Windows XP Service Pack 2 or later” on
page 9, or “Configuring Windows Firewall” in “When
using Windows Vista” on page 11.
1
Select TCP, UDP (Unicast) or UDP (Multicast)
from the Connection drop-down list in the Others
panel.
TCP: This is normally selected.
When TCP is selected as the communication port,
HTTP communication is adopted for video/audio
communications.
HTTP is the protocol used for reading the usual
Web page.
In an environment capable of reading Web pages,
you can watch or listen to video/audio by selecting
the TCP port.
UDP (Unicast): When UDP (Unicast) is selected
as the communication port, RTP (Real-time
Transport Protocol) is adopted for video/audio
communications. Since RTP is the protocol for
running video/audio data, the video/audio playback
is smoother than when TCP (HTTP) is selected. If
a firewall is installed between the camera and the
computer, or depending on the network
environment, video/audio may not play back
properly when UDP (Unicast) is selected. In this
case, select TCP.
UDP (Multicast): This protocol is selectable when
Multicast streaming (page 43) is On. When UDP
(Multicast) is selected as the transmission port,
RTP (Real-time Transport Protocol) and UDP
multicast techniques are adopted for video/audio
transmission. By selecting it, the network
transmission load of the camera can be reduced. If
a router that does not correspond to a multicast or
firewall is installed between the camera and the
computer, video/audio may not play back properly.
In this case, select TCP or UDP (Unicast).