Pearl-2 User Guide
Adjust latency and view the SRT stream status
You can add from 80 ms to 8000 ms of latency to the SRT stream. Increasing latency gives more time to
buffer packets and resend any that got lost in transit to the destination. If the latency value set for the stream
is too low and there is packet loss over the network, retransmission of lost packets will not be possible and the
stream quality will suffer.
Latency can be configured at the source and at the destination. SRT uses the highest of the two
latency values.
The formula to calculate latency is:
SRT Latency
=
RTT Multiplier
×
RTT
where the recommended range of the
RTT Multiplier
is a value from 3 to 20.
The following table provides guidelines for what values to use when calculating latency. An RTT multiplier
value less than 3 is too small for SRT to be effective and a value above 20 indicates a network with 100%
packet loss. Ensure the measured
buffer
is less than or equal to the latency value you use.
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