In Broadcast - November 2017 - 56

56

www.inbroadcast.com | Vol: 7 - Issue 11 | November 2017

InMedia

Metadata Workflows:
One Format To Rule Them All
IMF is coming to broadcast. Contributing Editor
Adrian Pennington examines what this means
for post workflows and asks will it achieve the
simplicity intended...

B

y April next year there will be a
new file format to juggle with. This
one is intended to be the one format to
rule them all. SMPTE is working with
the Digital Production Partnership
(DPP) on joint development of an
Interoperable Master Format (IMF)
specification for broadcast and online.
The original SMPTE standard, ST
2067, developed in 2012, dealt with
file-based interchange of finished
multi-version audio-visual works.
That dealt with multi-language
requirements, including subtitles and
closed captions all of which can be
handled within one large IMP - the
interoperable master package.
The DPP then took the lead in
drawing up an IMF for broadcast, in
co-operation with the North American
Broadcasters Association (NABA) and
the EBU.
For broadcasters there are two
primary use cases: incoming, meaning
buying content masters for further
compliance processing; and outgoing,
which is sales mastering. The goal is
to implement a system that addresses
the myriad metadata requirements
of television and OTT while fitting
into broadcasters' sizeable existing
archives of content.
However, the jury seems out on how
successful the original IMF has been.
Paul Mardling, VP of Strategy, Piksel,
says "extremely successful" but others
are less sure.
"The original vision for IMF was
that movie studios would use it as
the primary format for archiving
content and delivering it to the supply
chain," says Dominic Jackson, Product
Manager, Enterprise Products at

"The original vision
for IMF was that movie
studios would use
it as the primary
format"
Dominic Jackson, Telestream

Telestream. "So far there may be
some archiving going on, but the use
of IMF as a 'live' delivery format isn't
really here yet. We are mostly at the
point where studios are distributing
'test' packages to ensure that
recipients can handle them correctly."
Dalet's Chief Media Scientist, Bruce
Devlin also claims take up within the
Hollywood community, however, there
is still a missing unifying aspect to IMF.
He cites two major components behind
this inability to truly make IMF a massmarket format.
"Each studio still has their own IMF
delivery standards, both input and
output specifications," he says. "The
broader content creative and delivery
community feels that IMF is really
more like five to six different flavours
of a similar standard, since they have
to make IMF Flavour A for Netflix,
IMF Flavour B for a major studio and
IMF Flavour C to feed their finishing/
transcoding tool."
The second missing aspect is the
lack of tools able to handle IMF.
"Componentised media workflows
like IMF are very powerful and
drastically simplify operations, but
they are very complex in the back
end. It requires a good platform and
adapted management tools to enable
simple, cost-effective solutions to
ingest, manage, search/find/retrieve
and transform IMF for the necessary
workflows. And very few platforms
have developed the data model and
toolset."
Such tools are expected to move
out of testing into actual use cases
and production over the first half of
2018. As they do, there shouldn't be
too much difference between the core
workflows for IMF version 1 and the
broadcast/online version but there are
changes.
The principle differences is the need
to transport ad break information
to support stitching of assets from
outside of the IMF container at
playout. "This opens the possibility of
creative teams defining different break

Simplicity for
post workflows?

patterns and cut points in the asset
depending on the required ad payload
and playout length requirement,"
explains Mardling. "There's also the
need to include the relationships
between assets in different IMF
containers to allow series and episode
information to be transmitted within
the container.
"There
are
effectively
two
approaches to IMF in the workflow
- early or late stitching," he says.
"In an early stitching scenario the
broadcaster flattens the IMF file to
the required formats on receipt.
This allows the rest of the broadcast
workflow to remain more or less
unchanged. In a late stitching scenario
the IMF is processed through the
workflow and in effect any edits are
simply reflected in an updated CPL.
Flattening does not need to occur until
final playout, potentially on the fly."
Any new version of IMF needs
to be backwards compatible with
current implementations. However,
the majority of broadcast archives
are currently flattened files, often in
multiple difficult to track versions.
According to Mardling, the principle
issue will be in the requirement for
updating tooling to work with IMF and
the risk that rendering technologies
may become obsolete.
"I'd expect groups like DPP to
work on defining standard metadata
sets for specific markets or groups
or broadcasters," says Jackson.
"These metadata sets will also need
to be extensible to include specific
metadata requirements for individual
broadcasters."
If IMF for broadcast is going to work,

"The broader content
creative and delivery
community feels that
IMF is really more like
five to six different
flavours of a similar
standard"
Bruce Devlin, Dalet

broadcasters and the kit suppliers will
be required to introduce new ways of
handling files.
"Most of the existing tools that
broadcasters use are not necessarily
very IMF friendly," says Jackson.
"The asset management systems,
transcoders, edit systems and the
like are all likely going to need some
upgrade to deal with IMF successfully.
Just the implications of the fact that
IMF is a group of files rather than a
single one are going to be significant
for broadcast supply chain, and that's
just the start of it."
Codec Issues
Deciding on a primary codec for the
format seems too thorny an issue to
be sorted. "ProRes in IMF seems to
be here to stay but I doubt that will
meet everyone's needs," says Jackson.
"Codec choice is too challenging to
agree on."
Mardling believes the issue is a
storm in a teacup: "As with other
similar standards, shims will be
required to ensure interoperability but
this should not be a major impediment
to adoption."


http://www.inbroadcast.com http://www.telestream.net/vidchecker/overview.htm

Table of Contents for the Digital Edition of In Broadcast - November 2017

Contents
In Broadcast - November 2017 - Intro
In Broadcast - November 2017 - Cover1
In Broadcast - November 2017 - Cover2
In Broadcast - November 2017 - Contents
In Broadcast - November 2017 - 4
In Broadcast - November 2017 - 5
In Broadcast - November 2017 - 6
In Broadcast - November 2017 - 7
In Broadcast - November 2017 - 8
In Broadcast - November 2017 - 9
In Broadcast - November 2017 - 10
In Broadcast - November 2017 - 11
In Broadcast - November 2017 - 12
In Broadcast - November 2017 - 13
In Broadcast - November 2017 - 14
In Broadcast - November 2017 - 15
In Broadcast - November 2017 - 16
In Broadcast - November 2017 - 17
In Broadcast - November 2017 - 18
In Broadcast - November 2017 - 19
In Broadcast - November 2017 - 20
In Broadcast - November 2017 - 21
In Broadcast - November 2017 - 22
In Broadcast - November 2017 - 23
In Broadcast - November 2017 - 24
In Broadcast - November 2017 - 25
In Broadcast - November 2017 - 26
In Broadcast - November 2017 - 27
In Broadcast - November 2017 - 28
In Broadcast - November 2017 - 29
In Broadcast - November 2017 - 30
In Broadcast - November 2017 - 31
In Broadcast - November 2017 - 32
In Broadcast - November 2017 - 33
In Broadcast - November 2017 - 34
In Broadcast - November 2017 - 35
In Broadcast - November 2017 - 36
In Broadcast - November 2017 - 37
In Broadcast - November 2017 - 38
In Broadcast - November 2017 - 39
In Broadcast - November 2017 - 40
In Broadcast - November 2017 - 41
In Broadcast - November 2017 - 42
In Broadcast - November 2017 - 43
In Broadcast - November 2017 - 44
In Broadcast - November 2017 - 45
In Broadcast - November 2017 - 46
In Broadcast - November 2017 - 47
In Broadcast - November 2017 - 48
In Broadcast - November 2017 - 49
In Broadcast - November 2017 - 50
In Broadcast - November 2017 - 51
In Broadcast - November 2017 - 52
In Broadcast - November 2017 - 53
In Broadcast - November 2017 - 54
In Broadcast - November 2017 - 55
In Broadcast - November 2017 - 56
In Broadcast - November 2017 - 57
In Broadcast - November 2017 - 58
In Broadcast - November 2017 - 59
In Broadcast - November 2017 - 60
In Broadcast - November 2017 - 61
In Broadcast - November 2017 - 62
In Broadcast - November 2017 - 63
In Broadcast - November 2017 - 64
In Broadcast - November 2017 - 65
In Broadcast - November 2017 - Cover3
In Broadcast - November 2017 - Cover4
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201908
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY3
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY2
http://europe.nxtbook.com/nxteu/lesommet/CTA-DAY1
http://europe.nxtbook.com/nxteu/lesommet/CTA-VISITOR
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201906
http://europe.nxtbook.com/nxteu/lesommet/CTA-PREVIEW
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201905
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201904
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201903
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2019
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201902
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201901
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_INREVIEW2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201812
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201811
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NewYork2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201810
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201809
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201808
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201806
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201805
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201804
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201803
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201802
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2018
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201801
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201712
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201711
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201710
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOWNYexpo2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201709
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201708
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201707
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201705
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201704
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2017
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201703
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201702
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201701
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_INREVIEW2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201612
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201611
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOWNYexpo
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110708_DEMO
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201610
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_inshowguide2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201609
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201608
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201607
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201606
http://europe.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC03
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201605
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2016
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201604
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201603
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2016
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201602
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201601
http://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC02
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201512
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201511
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_CCW15expo
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201510
http://www.nxtbook.com/nxtbooks/lesommet/inbroadcast_APAC01
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201509
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_IBC2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201508
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201507
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201506
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_BROADCASTASIA2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201505
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201504
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_NABSHOW2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201503
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_cabsat2015
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201502
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201501
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201412
http://www.nxtbook.com/nxteu/lesommet/inbroadcast_201411
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201410
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201409
http://europe.nxtbook.com/nxteu/lesommet/inbroadcastIBCPRINTEDGUIDE_201409
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201408
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201407
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201406
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201405
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201404
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201403
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201402
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201401
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201312
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201311
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201310
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201309
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201308
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201307
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201306
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201305
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201304
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201303
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201302
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201301
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201211
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201210
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201209
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201208
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201207
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201206
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201205
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201204
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201203
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_201202
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20121201
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20111011
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110708
http://europe.nxtbook.com/nxteu/lesommet/inbroadcast_20110506
http://www.nxtbookMEDIA.com