User Guide

NETNode Operations Guide
Commercial in
Confidence
IP Mesh Systems
000-130
R1.8 2015-07-24
Commercial in
Confidence
Page 2-37
It is possible to see how much capacity is in use on the Status > Overview page by
clicking show details and looking at the Video Flow Rate. This is a percentage of the
maximum video bitrate (in this example, about 85%).
The encoder does not change transport stream rate, but video bitrate. This affects the
number of null packets in the stream. The NetNode compresses the transport stream packets
by removing the null and replacing with a marker byte before being sent across the radio
interface. This is reinserted by the NetNode the far end. Although the transport stream rate
does not change, the quantity of data send across the air interface does. The rate can vary
between 25% and 100% of the encoder specified bit rate.
Note: The H264 encoder will switch into low delay mode when VFC is enabled.
Note: VFC will also affect the recording quality on the SD card.