MGW Diamond
Multi-Channel HEVC and H.264 Portable Encoder
User Manual, Version 1.6
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Latency:
Enter a latency value in milliseconds to be used for correcting errors. The
minimal latency value must be three times higher than the RTT (Round Trip Time) value
that is used between the encoder and the targeted decoder. RTT value is available in Zixi
Statistic window (see The Dashboard Page section) after the Zixi™ channel has been
started.
Additionally, higher latency increases tolerance to network errors (range 0-6000
milliseconds). The actual error correction rates depend also on the stream bit-rate. On
average, 500ms latency yields protection of up to 6% of network errors. 6000ms latency
yields protection of up to 30% of network errors.
•
When using a Zixi latency lower than 500ms, FEC data protection is enabled resulting in an increased total output
bitrate up to 50%. Ensure the transmission link bandwidth is dimensioned for such bitrate.
•
If Zixi latency is set to 0, no data protection is achieved. Use this value to analyze the quality of your transmission
link. Transmission link statistics are reported within the Zixi Statistics Channel (Dashboard).
Check the Zixi Channel Statistic window (see The Dashboard Page section) to monitor the
packet loss of the transmission link used and set the latency accordingly.
•
Enable Dynamic Bit-rate Control:
Select the check box to allow either VITEC decoder
or Broadcaster Server to automatically change the encoding bit-rate while streaming.
Figure 8-1: The Zixi Settings window
In the VITEC Playout Server/ Zixi™ Broadcater Web interface:
1.
Add a new input stream. The
stream
ID
must match MGW Diamond Encoder Channel
Name that was entered in the
Channels page>Target section> Channel Name
field,
and it is case sensitive.
2.
Select
Push
.
