Operation Manual

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For the Port/Port Range field, specify the HTTP port on Helix Server. The default value is port 80,
which is the server's default HTTP port. If multicasting, indicate the range of ports on the Helix
Server receivers where the broadcast packets will be sent. Niagara Pro and Helix Server negotiate
the actual ports to use once the broadcast begins. The default range is 30001 to 30020.
In the Username and Password fields, enter the username and password defined in each Helix
Server receiver definition. The broadcast connection fails if the value is incorrect.
The next series of fields activate the Real encoder’s filters to improve video and audio quality. These
filter settings will depend upon the type of content you are streaming and your subjective preference.
ViewCast recommends you experiment with these settings and view the results on a test capture.
The Niagara Pro features integrated de-interlacing and inverse telecine filters that automatically
apply when needed. This allows the Niagara Pro to perform at maximum efficiency. ViewCast
recommends you do not enable the Real Encoder de-interlace and inverse telecine filters since
applying filters multiple times can produce undesirable results and consume additional system
resources.
Enable SureStream: SureStream allows you to encode the broadcast stream for multiple audiences.
However, each primary stream or substream you choose increases the processor load during
encoding and adds to the outgoing bandwidth requirements. For example, with SureStream enabled,
you can choose the 56k Dial-up audience and the 128k Dual ISDN audience. With SureStream
enabled, the encoding might require twice as much processing power.