Streaming Capabilities and System Scalability
The following tables detail the streaming capabilities of the SMP351. Data for the tables
was obtained through laboratory testing using optimal bandwidth conditions and can vary
depending on the selected video bit rate.
NOTE: Testing to determine the approximate maximum number of pull streams was
done on the Archive encode with one pull unicast confidence stream. Recording while
streaming does not reduce the maximum number of pull streams.
Available Unicast Streams
Video resolution and bit rate affect the total number of unicast streams (Archive and
Confidence) the SMP351 can broadcast. The following table compares the selected
resolution and bit rate with the approximate number of unicast streams that will be available.
Changing the resolution or using higher or lower bit rates may increase or decrease the
available number of streams.
Pull Stream Method
Unicast
Resolution
(Pixels x Lines @ frame rate)
Video Bit Rate (Kbps)
Approximate Number of
Pull Streams
848 x 480 @ 15 1500 40
1024 x 768 @ 15 2500 32
1280 x 1024 @ 30 3500 29
1280 x 720 @ 30 5000 23
1920 x 1080 @ 30 8000 16
NOTE: The following configuration options were set on the SMP351:
• Stream Type = VBR
• GOP Length = 30
• Stream Mode = Video/Audio
• Layout = Full screen with high motion content
• Archive Pull Streaming Method = Unicast RTP
• Condence Pull Streaming Method = Unicast RTP at default setting
Push Stream Method
The number of push unicast streams is one per encode (the SMP351 has two encodes,
Archive and Confidence).
SMP351 • Reference Information 196
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