In Broadcast - November 2020 - 56
56
www.inbroadcast.com | Vol: 10 - Issue 11 | November 2020
InTech
SL-HDR End-to-End Solution
by Cobalt Digital
By Dr. Ciro Noronha, Executive Vice President
of Engineering for Cobalt Digital...
Technology
The SL-HDR1 technology adopted by
ATSC 3.0 can give you the best of both
worlds: both SDR and HDR, together,
in the same signal. You start with a
pristine HDR signal. Using SL-HDR1,
that HDR signal is converted to a
(very good-looking) SDR signal with
metadata on the side that allows this
SDR signal to be converted back to
HDR (or anything else in between). An
SDR-only legacy device will ignore the
metadata and simply display the SDR
signal. An HDR-enabled device will
interpret the metadata and recover
the HDR signal, optionally adapting it
to the local display capabilities. This is
quite similar to what happened when
color TV was introduced - there was
a black-and-white signal, with a color
subcarrier. Legacy TV sets ignored
the color subcarrier and displayed only
the black-and-white signal; color TVs
pulled in the color information and
displayed the full picture!
This metadata can be carried both
in baseband and compressed signals.
In baseband signals, the metadata is
carried in the ancillary data space,
using the SMPTE-2108 standard. If you
are using compression, the metadata is
carried in Supplemental Enhancement
Information (SEI) messages inside the
video elementary streams. This is
true both for H.264 (AVC) and H.265
(HEVC). In all cases, the metadata bit
rate is negligible, under 30 kb/s.
The Cobalt Solution
In order to build an end-to-end
solution, the following building blocks
are required:
* An SL-HDR1 Encoder, which
will take an HDR signal over SDI, and
produce an SDR signal plus ST 2108
metadata over SDI.
* An
audio/video
encoder,
which will compress the content to
AVC and/or HEVC, inserting the ST
2108 metadata into appropriate SEI
messages. The resulting bitstream
can be transmitted using a variety of
methods.
* An audio/video decoder, which
will receive the AVC and/or HEVC
bitstream with SL-HDR1 metadata,
decode the bitstream, and output it
over SDI with the metadata inserted
using ST 2108.
* An SL-HDR1 Decoder, which
will take the SDI signal with SDR and
metadata, and re-create the original
HDR signal.
Cobalt Digital can provide every
one of these building blocks. Sinclair
has deployed this Cobalt solution
with Technicolor SL-HDR1 technology
in all ATSC 3.0 US deployments to
date and has publicly committed to
continue doing so in all their future
deployments.
Baseband Processing SL-HDR1 Encoder/Decoder
The Cobalt 9904-UDX-4K openGear
card is a multi-function video
processor. It is capable of Up/Down/
Cross Conversion, Frame Sync, Audio
Embed/De-Embed and Processing,
as well as SL-HDR1 encoding and
decoding. It supports signals all the
way from SD to 4K. Cobalt's encoder
and decoder products support
Technicolor Advanced HDR technology,
including SL-HDR1.
Video/Audio Encoding and Decoding
The Cobalt 9992-ENC is an openGear
encoder card capable of generating
MPEG-2, AVC and HEVC, 8 bit/10
bit, 4:2:0 or 4:2:2. It can be used
either as a quad-HD encoder, or a
single 4K encoder. It supports 16
channels of audio, with a variety of
encoding standards. The 9992-ENC
has full support for extracting ST 2108
metadata from ancillary data and
injecting both in AVC and HEVC. The
encoder features a variety of output
modes, including ASI, UDP/RTP, RTMP,
HLS and the new Reliable Internet
Stream Transport.
The Cobalt 9992-DEC is a multistandard
openGear
professional
decoder card, with support for MPEG 2,
AVC and HEVC, supporting 8-bit/10-bit
and 4:2:0/4:2:2 operation. It supports
decoding of HD and 4K signals, as well
as 16 channels of audio, with a variety
of encoding standards. The 9992-DEC
has full support for extracting HDR
metadata from SEI messages and
outputting it using ST 2108 over SDI.
The decoder also features a variety of
input modes, similar to those of the
encoder, and is ideal as an ATSC-3.0
monitoring device.
Further information available at:
www.cobaltdigital.com
New Cobalt 9905-MPx Card Provides
Quad Path 3G/HD/SD
O
ffering unprecedented multi-input
support and flexibility - 3G/HD/SD
Quad-Path Up/Down/Cross Converter/
Frame Sync /Embed/De-Embed Audio
Processor presents new level of
openGear packaging density.
Cobalt Digital, has announced the
launch of its 9905-MPx 3G/HD/SD
Quad-Path Up/Down/Cross Converter/
Frame Sync, a next-generation
advanced scaler/frame synchronizer
for the openGear platform. The new
card was developed in direct response
to customer requests for one module
that supports four independent signal
paths.
"Cobalt has been building products
since 1997 based not only on current
industry demand, but also by
anticipating requirements driven by
emerging technologies," stated Chris
Shaw, Cobalt's Senior Vice President
of sales and marketing. "This time the
customers asked for increased density,
unprecedented multi-input support,
and enhanced flexibility, and we
happily complied with the 9905-MPx."
Based on the architecture of Cobalt's
9904-UDX, the 9905-MPx incorporates
many of the award-winning card's
capabilities - such as support for all
popular formats: 480i, 576i, 720p,
1080i, 1080pSF, 1080p - but features
functionality that sets it apart from
any other Up/Down/Cross Converter/
Frame Sync/Embed/De-Embed Audio
Processor on the market. The 9905MPx provides four independent signal
paths of UDX / frame sync / audio
embedding and de-embedding on
a single openGear card. This
multi-path design offers four
channels per card with flexible
AES and MADI embed/de-embed
for each path. When used with
Cobalt's HPF-9000 20-slot chassis,
this provides up to 24 channels (6
cards) of processing in a single frame,
representing a new level of openGear
packaging density and resulting in
unprecedented multi-input support
and flexibility. Each independent path
has 3D-LUT, ANC bridge (insert/extract
Timecode Proc, CC Proc) UDX Up/
Down/Cross Conversion, Frame Sync,
Trouble Slate/Logo import/insert as
standard - All economically priced.
The unit's independent up/down/
cross convert scalers are specifically
designed for broadcast video formats,
with full ARC control suitable for
conversions to or from 4:3 and 16:9
Cobalt Digital's
9905-MPx card
aspect ratios. Discrete AES and
MADI
audio
embedding/routing/
mixing/de-embedding to any of four
processing paths is supported. Color
correction and 3D LUT functions
provide accommodation of SDR and
HDR processing for downstream HDR
systems.
Card control/monitoring is available
via a DashBoard user interface
or Cobalt's RESTful-based Reflex
protocol. The 9905-MPx can be
software-converted to a 4K Quad-Link
Input SDM/2SI 4K UDX/Frame Sync
card with an optional software license.
Like many Cobalt cards, the 9905MPx offers peace-of-mind via the
Company's five-year warranty.
http://www.inbroadcast.com
https://www.cobaltdigital.com/products/4953/9992-dec-4k-hevc
https://www.cobaltdigital.com/products/4692/9904-udx-4k
http://www.cobaltdigital.com
https://www.cobaltdigital.com/products/5050/9905-mpx
In Broadcast - November 2020
Table of Contents for the Digital Edition of In Broadcast - November 2020
Contents
In Broadcast - November 2020 - Intro
In Broadcast - November 2020 - Cover1
In Broadcast - November 2020 - Cover2
In Broadcast - November 2020 - Contents
In Broadcast - November 2020 - 4
In Broadcast - November 2020 - 5
In Broadcast - November 2020 - 6
In Broadcast - November 2020 - 7
In Broadcast - November 2020 - 8
In Broadcast - November 2020 - 9
In Broadcast - November 2020 - 10
In Broadcast - November 2020 - 11
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In Broadcast - November 2020 - Cover3
In Broadcast - November 2020 - Cover4
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