W3C

Media Fragments Working Group Teleconference

05 Nov 2008

Agenda

See also: IRC log

Attendees

Present
Raphael, Erik, Yves, Guillaume, Jack, Davy, Michael_(irc_only)
Regrets
Michael, Silvia
Chair
Raphael
Scribe
Davy

Contents


telecon hour

Yves: propose to have it 1 hour later, but we should ask it to Silvia

raphael: any problems if it starts 1 hour later?

<mhausenblas> I'm fine with one hour later

raphael: proposal to start the telecon at 10:00 UTC

<mhausenblas> +1

<erik> +1

<scribe> ACTION: yves to make a poll for suggestions for telecon hour: 10:00UTC or 9:30UTC [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action01]

<trackbot> Created ACTION-9 - Make a poll for suggestions for telecon hour: 10:00UTC or 9:30UTC [on Yves Lafon - due 2008-11-12].

minutes acception

<erik> +1

<Gui> +1

raphael: any objections for minutes (phoneconf and f2f)

<erik> +1

<mhausenblas> fine with me - no objections

jackjansen: I did not scribe all day

raphael: minutes accepted
... goes through the action items

second F2F meeting

raphael: encourages to fill the questionnaire

<rtroncy> michael, please fill http://www.w3.org/2002/09/wbs/42785/MFRAGF2F2/

<mhausenblas> ok

erik: please make your arrangement asap (preferable before 8/11/2008)

raphael: no agenda yet, suggestions are welcome

<Gui> http://www.w3.org/2008/WebVideo/Fragments/wiki/GhentLogistic

preparation of working draft

1. Use cases and requirements draft (Silvia)

raphael: take time to read it and provide some comments
... any comments yet?
... suggest to take 2 nominates to review this document

jackjansen: I will volunteer

Guillaume: I will also review it

<scribe> ACTION: jackjansen and Gui to review the use cases and requirements draft [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action02]

<trackbot> Sorry, couldn't find user - Jack

2. Types of Fragment addressing (guillaume)

raphael: idea was to describe 4 dimensions to address fragments

guillaume: description of possibilities of media types and these dimensions

yves: regarding linking to a parent resource
... I will look more deeply into that next week

3. HTTP implementation (Raphael)

raphael: more information next week
... 3th protocol: file implementation

<Gui> ://

s/file/file://

<Yves> file always get the full result, so identifying fragment forces seeking

<rtroncy> 4. RTSP implementation (davy)

<rtroncy> See: http://www.w3.org/2008/WebVideo/Fragments/wiki/RTSP_implementation

<rtroncy> Davy: I describe how to address a track and a temporal fragment in rtsp

<rtroncy> ... some feedback would be nice

<rtroncy> ... is there any more specialist of rtsp in the room?

<rtroncy> Jack: I will read it!

<rtroncy> ACTION: Jack to review the RTSP implementation document [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action03]

<trackbot> Created ACTION-10 - Review the RTSP implementation document [on Jack Jansen - due 2008-11-12].

5. existing technologies survey (erik)

raphael: merge this to the state of the art page

erik: I can only look at it from 15/11/2008
... it will be ready at second F2F

Guillaume: how to give feedback on drafts?

raphael: write mail to the mailinglist
... provide the version you have reviewed
... give comments section per section

Issues

raphael: caching discussion
... time ranges is really hard

<rtroncy> Jack: i think time is complex and cache should not necessary try to understand time ... thus only cache bytes range

<rtroncy> Davy: I do not say exactly the contrary, but i'm arguing about implementation

<rtroncy> Jack: caching time ranges requires cache server to do recombination ... so have knowledge about the various media container formats

yves: implementation hard or not, if we no it can be done, than there is no problem

Jack: caching based on byte offsets will work on 99% of the cases

<rtroncy> Yves: when the implementation is done ... it is done! We know it can be done ... implementation difficulty should not influence the design

jack: it would work with time ranges, but I see no advantages

Yves: with time ranges, you can directly request the fragment

jack: I fully agree
... I think we should leave this issue open

raphael: more discussion on the mailinglist

<erik> +q

AOB

<Yves> regrets for me next week (HTTP meeting)

<rtroncy> thanks davy for the scribing

<rtroncy> close ACTION-7

<trackbot> ACTION-7 Request a new time slot on the Zakim bridge closed

Summary of Action Items

[NEW] ACTION: Jack to review the RTSP implementation document [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action03]
[NEW] ACTION: jackjansen and Gui to review the use cases and requirements draft [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action02]
[NEW] ACTION: yves to make a poll for suggestions for telecon hour: 10:00UTC or 9:30UTC [recorded in http://www.w3.org/2008/11/05-mediafrag-minutes.html#action01]
 
[End of minutes]

Minutes formatted by David Booth's scribe.perl version 1.133 (CVS log)
$Date: 2008/11/05 11:05:52 $