In Broadcast - September 2020 - 8

8

www.inbroadcast.com | Vol: 10 - Issue 9 | September 2020

InNews

Sky Racing
Expands AWS
Elemental Use

S

AWS Elemental L525AE live encoder

ky Racing has recently expanded
its use of AWS Elemental Live
encoders to stream over 40 live
video channels simultaneously, using
encoders supplied and supported by
Digistor.
Sky utilises AWS Elemental Live for
the adaptive bit rate encoding and
Apple HLS packaging of thoroughbred
horse racing content for live streaming
delivery.
AWS
Elemental
Live
appliances were originally chosen
by Sky to power their live streaming
delivery in light of the product's ability
to provide efficient, high quality video
encoding of demanding racing content
for live streaming.
Building on that success Sky has
further expanded and now stream over
40 live video channels simultaneously,
using AWS Elemental Live encoders
supplied and supported by Digistor.
Sky Racing is also making use of AWS
Elemental Quality Defined Variable Bit
Rate (QVBR) encoding. QVBR maintains
consistent quality video encoding
whilst only using the minimum bit rate
needed at any given time to maintain
a user defined target video quality
level, by continuously adapting to the
complexity of the video content.
Using QVBR, Sky are able to
continually optimise video bit rates
for the content, yielding
lower average video bit
rates overall, in order
to provide Sky with
substantial savings in the
costs of distribution of
content.

Cobalt 'Ultra-Low
Latency Mode' Encoder

C

obalt has significantly lowering
latency for its 9992-ENC software
defined broadcast encoder card series.
Cobalt has released an Ultra-Low
Latency Mode that combines parallel
processing with GDR (Gradual Decoder
Refresh) and a suitable CPB (Coded
Picture Buffer) to achieve encoder
latencies as low as 10 milliseconds.
Ciro Noronha, Cobalt EVP of
Engineering, said: "In any sort of
video compression, there is a tradeoff
between three variables: latency,
quality, and bit rate. Essentially, any
two of these can be optimised at the
expense of the third, and a quality
encoder will allow you to adjust the
levels and choose the operating point

that works for
you.
"The
Cobalt
9992-ENC
has
always had this
capability, and where
latency is concerned, the
most important ones are the CPB
delay, and the use of GDR that allowed
latency to vary from over a second (for
high quality at low bit rate) to about
100 milliseconds. This is available for
both AVC and HEVC (and, with some
limitations, for MPEG-2 as well).
"Now with Ultra-Low Latency
Mode, this is reduced to as low as 10
milliseconds, a significantly important
innovation for broadcasters."

Cobalt 9992-ENC
software defined
broadcast encoder

Noronha also noted
that this latency level is
lower than the intrinsic latency of the
usual audio encoders, so the 9992-ENC
offers LPCM audio support to bypass
them.

PHABRIX Ships QxL Rasterizer

P

HABRIX is shipping its
newest innovation, the
QxL 25G IP rasterizer.
The QxL is the world's most
flexible UHD-25G rasterizer,
created to address the needs
of professional broadcast
media IP networks in a
compact form factor.
The QxL inherits all the JTNM Tested features of the Qx with a
common look and feel across both
platforms. Out of the box, this 10G/25G
IP enabled rasterizer supports JTNM TR 1001-1:2018, 2110-20 (video),
2110-30 (PCM audio), 2110-31 (AES
transport), and 2110-40 (ANC media)
flows all with 2022-7 Seamless IP
Protection Switching (SIPS), and
independent PTP slaves on both
media ports for fully-redundant media

Phabrix QxL 25G IP rasterizer

network operation.
The toolset also provides support
for DHCP on all IP ports, unicast DNSSD, AMWA NMOS IS-04 Discovery
and Registration, IS-05 Connection
management, system resource, and
Network Topology Discovery using
Link Layer Discovery protocol (LLDP).

IP media interfaces are provided as
standard and SDI media interfaces
with optional SDI Eye and Jitter
measurement are available as a
factory fitted option.
The flexible userfriendly GUI provides
up to 16 userconfigurable windows
with
presets
for
rapid visualisation of
different traffic and
workflow configurations.
The complexities of ST 2110 and
NMOS operation are also presented to
the user in an intuitive and accessible
manner.
A suite of operator level IP flow
health and PTP monitoring features
are provided with warnings and
alarms.
http://www.inbroadcast.com http://www.digistor.com.au http://www.cobaltdigital.com http://www.phabrix.com https://wohler.com
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