Vivotek TC5632 User Manual page 19

The UDP protocol allows for more real-time audio and video streams. However, some
packets may be lost due to network burst traffic and images may be obscured.
The TCP protocol allows for less packet loss and produces a more accurate video
display. The downside with this protocol is that the real-time effect is worse than that
with the UDP protocol.
The HTTP protocol allows the media can be streaming through http port when the
UDP or TCP protocol are blocked.
If no special need is required, UDP protocol is recommended. Generally speaking, the
client's choice will be in the order of UDP → TCP. After the Network Camera is
connected successfully, "Protocol Option" will indicate the selected protocol. The
selected protocol will be recorded in the user's PC and will be used for the next
connection. If the network environment is changed, or the user wants to let the web
browser to detect again, manually select the UDP protocol, save, and return HOME to
re-connect.
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