Datavideo 4-Channel Streaming Encoder and Recorder (1 RU) - Manual (Page 29)

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Frame Rate
The Frame Rate drop-down menu
allows users to select different Frame
Rates.
Note: Please pay attention that the
total frame rate setting for the
Record+Stream must be within 300
FPS.
Profile
Users can select three Profile settings
including High, Main and Baseline.
Level
The default value of this Level option
is fixed at High 4.2.
GOP
Users can select different GOP from
this drop-down menu.