VBrick 9000 Series, Admin Manual

Page: 141 / 192

Decoder Configuration
VBrick 9000 Encoder Admin Guide 133
Announce Receive Settings

Decoder Configuration Topics:
Receivers
Video Output
Audio Output
Video Output

To access the
Video Output
fields:
1. Navigate to
Decoder Configuration
>
Video Output
.
Jitter Queue Time Range 0–800 ms. Default = 200 ms. Jitter is the variation in time
between packets of data arriving at the decoder. The amount of jitter
present in a media stream depends on (1) the capabilities and
configuration of the encoder creating the stream and (2) on the
network carrying the stream from the encoder to the decoder. The
decoder can compensate for jitter by buffering extra data so that
playback can be smooth and consistent even when the data stream
has bursts and droughts—but adding extra buffering to handle jitter
has the disadvantage of adding latency.
The VBrick 9000 Series decoder has an adjustable Jitter Queue Time
so you can choose the right balance between handling jitter and
achieving low latency. The default setting of 200 ms works well when
the decoder is playing streams from VBrick 9000 Series encoders
over a good network and will result in low end-to-end latency of
approximately 300 ms. The Jitter Queue doubles as a re-ordering
queue so if your network delivers packets out of order you can
increase the Jitter Queue time to compensate. If your decoder will be
playing streams from a VBrick 7000 Series encoder, you should
configure the Jitter Queue Time to 600 ms or higher. For more
information see Latency and Quality Tuning.
Field Description
Announce IP
Address The IP address that announcements are being received on. This must
match the address the transmitter is using.
Announce Port The port that announcements are being received on. This must
match the port the transmitter is using.
Announce Timeout If no announcements are received after this configurable timeout
period, the connection is dropped and the entry is removed from the
table of available programs on the Decoder Configuration >
Receivers page. Default = 90 sec.
Field Description