epiphan video Pearl-2, Руководство пользователя

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Pearl-2 User Guide Start and stop an NDI stream
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After you start an NDI stream on Pearl-2, if NDI detects there are no receivers connected to the stream,
Pearl-2 stops broadcasting to conserve bandwidth and resources. However, the Pearl-2 stream can still
be discovered on the network.
Pearl-2 can ingest up to three multicast or unicast 1920×1080@30 fps NDI video inputs or up to one 4K NDI
input to Pearl-2, and supports both NDI and NDI|HX video inputs. For more information about NDI inputs,
see
Connect an NDI source .
Start and stop an NDI stream
NDI
®
(Network Device Interface) is used to transmit low-latency video content over Gigabit networks at
broadcast quality with no audio compression. Pearl-2 supports up to two unicast NDI output streams at
1920×1080@30 fps.
You can assign the NDI stream a unique name using alphanumeric characters. The name appears in
parenthesis after the Pearl-2 serial number and three-letter prefix as part of the NDI stream ID as seen by
other NDI resources on the network.
For example: PLTTSG999901 ( name )
where name is the unique alphanumeric name you assign the stream and PLT is the three-digit prefix that
identifies this as a Pearl-2 system.
Pearl-2 shows up as an NDI resource to other NDI resources on the network as soon as you start an
NDI stream. All NDI devices on the same network as Pearl-2 can access the unicast stream.
Important considerations
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Pearl-2 can unicast up to two 1920×1080 NDI streams simultaneously. However, NDI allows receivers
to request a lower quality stream. If that happens, Pearl-2 will send two streams: one at the original
resolution and a second one at the lower resolution. This has an impact on the CPU performance of
Pearl-2, see
Optimum CPU performance .
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We recommend having at least 125 Mbps Ethernet for a single 1920×1080 30 fps stream using NDI,
and between 8 and 20 Mbps for a single 1920×1080 30 fps stream using NDI|HX.
To stream using NDI:
1. Login to the Admin panel as admin , see Connect to Admin panel .
2. From the Channels menu, select a channel and click Streaming . The Streaming configuration page
opens.
3. Click New stream and choose NDI Streaming . The new stream is created using the default name
Stream 1 .
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