- From: Daniel Davis <ddavis@w3.org>
- Date: Fri, 17 Jul 2015 14:22:24 +0900
- To: "public-web-and-tv@w3.org" <public-web-and-tv@w3.org>
Hello all,
Here are the minutes from the GGIE call on July 15th:
http://www.w3.org/2015/07/15-webtv-minutes.html
and pasted in full below. Thanks to Bill for scribing again.
Please note the next call will be on Wednesday July 29th from 11:00 am
Eastern Time (US). See here for the Webex call details:
https://www.w3.org/2011/webtv/wiki/Main_Page#Teleconferences_.2F_Meetings
With regards,
Daniel
==========
Web and TV IG: GGIE meeting
15 Jul 2015
Attendees
Present
Glenn Deen, Bill Rose, Nilo Mitra, Dale Rochon, Paul
Higgs, Leslie Daigle, Kaz Ashimura, Mike Wilkenson
Regrets
Daniel Davis
Chair
Glenn
Scribe
Bill
Contents
* [2]Previous call
* [3]Review of the high level GGIE diagram
* [4]Discussion on Cache UC-1 Cache Query
* [5]Discussion on Cache US-2 Cache Discovery
* [6]Discussion on Streaming-UC-4 Manipulating streamed
content
* [7]Next meeting
* [8]IETF meeting
__________________________________________________________
Previous call
<glennd> The 7-1-15 Minutes were approved without change
<glennd> Review of Action Items from previous call
1. Nilo, Dale to look into creating new UCs capturing the
basic core elements of the discussion on ad insertion
+ Nilo – Closed
+ Dale – Open
2. Bill Rose to add note to UC-5 that live content may not
have an ID or be able to be cached – Closed
3. Bill Rose to add note to Creation UC-5 on the difference
between live ephemeral versus live persistent content in
Creation UC-5 – Closed
4. Bill Rose to add a note to UC-5 that when we discuss the
UCs we ensure there is a discussion on Content UC-5 within
the Distribution UC discussions – Closed
Review of the high level GGIE diagram
<glennd> Ingest was added to the diagram per last meeting
discussion. Also added Enterprise/CDN operated edge cache
bubble to the Smart Edge (Glass of Viewing)
<nilo> Shouldn’t CDN be added to the Distribute bubble in Core
block?
Action Item – Glenn to add CDN to Distribute bubble in Core
block
There were no other comments
Discussion on Cache UC-1 Cache Query
<glennd> A viewing device is accessing content from a source on
the network. A cache exists on the network which may have some
or all of the content elements. The viewing device connects to
the cache and queries the cache for the content source using a
URI which contains the content identifier and segment
identification for the sought content element. If the content
element is not in cache, the device will get the content from
the original source Caches assist in obtaining content. May be
multiple caches. Caches may have all or part of content. If
viewing device does not find content on an advertised cache, it
will get the content from the original source.
There was no further discussion
Discussion on Cache US-2 Cache Discovery which builds on Cache UC-1
<glennd> A viewing device is accessing content from a source on
the network. A cache exists on the local network but the device
is not aware of the cache. The cache advertises itself on the
local network so that it maybe discovered by devices. The
device finds the cache and adds it to its list of known caches.
The viewing device connects to the cache and queries the cache
for the content source using a URI which contains the content
identifier and segment identification for the sought content
element. If the content element is not in cache, the device
will get the content from the original source . In UC-1 there
is no discussion on how device finds a cache. Cache exists on
local network, advertises itself.
<digitaldale> What constitutes a cache? How does it advertise
itself – as what?
<nilo> Since it is on local network, there are some local
network services that do advertise themselves like UPnP/DLNA
<glennd> DLNA has a content source but is this really a cache
or a source?
<nilo> A device can identify itself as a source. DLNA has
concept of gateway or media server that caches content. Local
devices can discover and obtain media. The media server is
essentially a cache since it may or may not have the complete
file.
Action Item: Glenn will add note on DLNA and any other services
that may fall into this category in the gap section.
<glennd> We can go into it further when discussing UCs in more
detail, gap analysis
<glennd> Submit additional UCs as members think of them
Discussion on Streaming-UC-4 Manipulating streamed content
<nilo> Content items may be interposed within other content to
create the version that is streamed to the end consumer such as
linear TV, video-on-demand, where previews and advertisements
can be placed before, after and within the main content item.
The number, position and length of these interstitial content
items are determined by business agreements between the actors
identified below. There are standards such as Ad-ID, EIDR, that
can identify the ad and content respectively. SMPTE is working
on a specification to insert such identifiers into content
items. SCTE has defined specs for signaling position of
interstitials and alternative content.
<glennd> I understand SCTE only applies to broadcast, not web
TV
<nilo> Not OTA broadcast but by cable, others.
Action Item: Nilo will add note Streaming UC-4 as to what types
of content SCTE is applicable to.
<glennd> For user generated content, are there standards that
can be used? YouTube allows ads between content items, not
within the content
<nilo> Could be done in principle but not used.
Action Item: Nilo will add note to Streaming UC-4 about
standards for e.g. inserting ads in YouTube content.
<glennd> Could see the need for longer form user content
<glennd> Is there any additional information that should be
passed onto GGIE members about the upcoming Web and TV IG TPAC
meeting?
<kaz> Time, date. Speak to chairs of TV Content, others, about
items they may want to add to the meeting
<glennd> Need to start thinking about issues for 2016 that GGIE
should address so we can begin to schedule
Next meeting
Next call: July 29th at 11:00 AM ET.
IETF meeting
<glennd> If anyone will be at the IETF meetings in Prague the
week of July 19 please contact me.
Summary of Action Items
Action Items Held Over from Previous Call
* Dale to look into creating new UCs capturing the basic core
elements of the discussion on ad insertion
Action Items created during this call
* Glenn to add CDN to Distribute bubble in Core block
* Glenn will add note on DLNA and any other services that may
fall into this category in the gap section.
* Nilo will add note Streaming UC-4 as to what types of
content SCTE is applicable to.
* Nilo will add note to Streaming UC-4 about standards for
e.g. inserting ads in YouTube content.
[End of minutes]
__________________________________________________________
Received on Friday, 17 July 2015 05:23:04 UTC