Alinking UNC-9512 Manual do Utilizador descarregar pdf (Página 38)

17. Streaming: sets the video stream protocol (HTTP is recommended)

This product provides three different video streaming protocols: UDP, TCP, and

HTTP. HTTP is recommended because it allows the video stream to go through

the firewall. (Refer to Setting/Basic Setting/Network/Streaming for more

information).

UDP: provides the fastest but most unreliable transmission service. Video steams

are transmitted through UDP Port (50000~60000 by default) to ensure the

fastest image transmission. However, video fragment or mosaics may occur

due to poor transmission quality.

TCP: provides reliable data transmission. Video steams are transmitted through

RTSP Port (554 by default) to avoid video fragment or mosaics due to poor

transmission quality.

HTTP: Video streams are transmitted through HTTP Port (80 by default) to ensure

passing through firewalls.

Comparison between stream protocols

Tunneling Pocket Loss Speed

HTTP Easy Fair Fair

TCP Fair Lower Fast

UDP Hard Lowest Fastest

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