Cisco D9054 Installation And Operation Manual page 112

Setting Up the Statistical Multiplexing Encoding Rate,
These delay figures do not include additional delay from the pre-processing.
You select extended delay for applications where picture quality has priority to
end-to-end delay. For the normal delay setting, the D9054 HD Encoder adheres
strictly to the limitations in ISO/IEC 14496-1 (H.264 specification). You only
select short delay for applications which require it as picture quality is likely to
be reduced.
Note: Some decoders may require that you select normal delay.
7. If necessary, force the channel to the default video rate by enabling the Force to
Default Rate option. This will force the channel to ignore the maximum and
minimum rates. See Determining the Default Video Rate, page 5-29 for more
information. This is not normally necessary unless maintenance is required.
8. If the Enforce Minimum Rate option is selected, the minimum rate setting will
be enforced even when fewer bits are required to encode simple video content.
When de-selected (default), the instantaneous rate can go below the minimum
rate setting for simple content.
9. Set the Group Rate Mode. If the encoder is in a statmux pool that only contains
AVC encoders, set the Group Rate Mode to Standalone. The default setting is
Standalone. In this case, the encoders in each statmux pool communicate with
each other to share bandwidth/resources.
Select Redundancy Controller if there is an external redundancy controller
without a DCM (e.g., PowerVu Network Centre Control System). The encoder
will go into safe mode on power up by setting the redundancy state to standby.
Select DCM for the encoder to receive and process group rate messages from the
DCM and use the received group rate as the total bandwidth for bits allocation.
Select DCM No Redundancy for the encoder to receive and process group rate
messages from a DCM without backup enabled. It will also use the received
group rate as the total bandwidth for bits allocation.
10. Click Apply.
11. To assign encoders to a statmux pool, refer to Setting Up the Statistical
Multiplexing Pools, page 5-30.
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