JVC VN-V686U manual Faq

-Set unique Multicast address and port to each Multicast stream if multiple multicast streams are required.

9. FAQ

(1)Low Frame rate due to long delay of network

- Causes of Low Frame Rate

During transmission via TCP, VN-V686 sends out the following data by receiving the Ack of TCP. When network delay is long, reception of Ack will be delayed and sending rate will drop. This therefore leads to a drop in the frame rate.

- Countermeasure

This problem can be avoided by receiving via multicast. Multicast uses UDP and Ack does not exist. As such, the sender will be able to continue sending without being affected by network delays.

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