In Broadcast - NABSHOW 2015 - 20


20

www.inbroadcast.com | NAB SHOW 11-16 April 2015 | InShow Guide

High Quality Transport for
Video Contributing Networks
At NAB Show 2015, Barco Silex will demonstrate 4K video over IP premiering an ultra-low
latency implementation...

J

ean-Marie
Cloquet,
Manager
of Barco Silex's Video Division,
discusses his company's leading role
in standardising the transport of high
quality video over IP networks.

drawback for video service providers
was that they had to lock into the
products of one or a few vendors,
instead of setting up the best matching
cost-efficient infrastructure.

You helped draw up a new standard
for high quality video transport. What
will the broadcast industry win once
it gets widely adopted?
What they will win is a guaranteed
interoperability
between
the
equipment of their various suppliers.
They will be able to mix and match that
equipment to set up their contributing
networks, without having to worry
about the connection protocols and
the transport. Plug in the cables, and
they'll have a network.
The last decade, the broadcasting
industry has seen an explosion of high
quality video, often live broadcast, that
they have to transport at high quality
inside their contributing networks, for
further managing and editing. JPEG
2000 came out as an obvious choice
for the compression, so equipment
suppliers started to implement JPEG
2000 encoders and decoders in their
video equipment. However, for the
transport between locations, they still
had the choice between a wide range
of implementation options, with some
even using proprietary protocols. The

The video industry obviously
appreciated the effort, awarding you
a technology Emmy, but where did
the standard come from, and how
does it work?
Back in 2007, the SMPTE had
already published a standard for
video transport over IP, which has
been expanded since. SMPTE 2022
includes, amongst others, IP protocols
for constant bit-rate video signals in
MPEG-2 transport streams (SMPTE
2022 1 & 2 for compressed video and
SMPTE 2022 5&6 for uncompressed
video). Taking these as basis, the Video
Services Forum (VSF) added JPEG
2000 compression. As a member of
the VSF, we played an instrumental
role in that effort.
At the beginning of 2013, a technical
recommendation entitled Transport
of JPEG 2000 Broadcast Profile video
in MPEG-2 TS over IP was published.
Any device that adheres to VSF
TR-01 will take its input from an
SDI signal. It will extract the active
video, audio and ancillary data and
optionally compress the video in JPEG

2000. The resulting stream will be
multiplexed into an MPEG-2 transport
stream, together with the audio
and ancillary data. This stream is
encapsulated according to SMPTE2022
in an RTP stream (Real-time Transport
Protocol) and transmitted over IP to
a receiving device. The receiver will
de-encapsulate the RTP/IP stream,
de-multiplex the MPEG-2 transport
stream, decode the JPEG 2000, and
place the video, audio, and ancillary
data onto the output SDI signal.
The next step is to get this standard
into the supplier's equipment. What
is the role of Barco Silex in that
effort?
At the time the VSF recommendation
was published, we already had a
partnership with Xilinx to develop
video over IP solutions. Xilinx
is a leading manufacturer of
programmable chips, and also has a
number of tried and tested hardware
blocks for video transport (SMPTE
2022, SMPTE SDI, Ethernet MACs).
Barco Silex is known for its hardware
solutions
for
high-performance
video compression, including what is
probably the world's most efficient
JPEG 2000 compression block - a very
complementary collaboration, in which
Barco Silex took on the role of system

Thierry Watteyne of Barco-Silex poses with Barco Silex's Emmy for its work in creating a new high quality video transport standard

integrator, matching the hardware
blocks in a reference design for the
new standard.
The goal of our collaboration was to
offer the OEMs a platform of validated
hardware blocks, reference designs
and system integration services.
By integrating either the separate
blocks or the completed reference
designs, they can now add the new
interoperable capability to their
products, without risking their road
maps or time to market.
A first generation of our reference
design was validated in a public
interoperability demonstration during
the annual VidTrans conference held
in February 2014. During this test by
the VSF, Barco Silex and nine other
companies provided technology and
equipment, which they interconnected
to demonstrate live transmission of
720p30 and 1080i60 HD content,
compressed in real-time using JPEG
2000 encoders and decoders.
At NAB Show, you're showcasing
your reference design to the
equipment builders. What can they
expect?
Recently, we released a full-featured
design. We implemented it in two
platforms, one using Xilinx' Zynq7000 SoC FPGA, and the other the
Kintex7 FPGA. The hardware blocks
that we used can be integrated to
address the complete range of system
requirements the OEMs may have.
At this year's NAB Show, we'll
demonstrate that our design can also
handle 4K and UHD signals. Using the
four input channels of the reference
design in quad-SDI mode (4K carried
over 4 SDI cables), it can now take a
4K input signal and send it over an IP
network.
We'll even be able to demo a low
latency solution. To further reduce the
latency, the video frames are divided
into stripes, which are then coded
separately. The VSF is still working on
this ULL (Ultra-Low Latency) version of
its VSF TR-01 recommendation, but we
can already show an implementation.
So if you are building equipment for
the video contributing networks, come
and see us.


http://www.inbroadcast.com https://www.youtube.com/watch?v=d_fBfNHjikg

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