W3C home > Mailing lists > Public > public-media-annotation@w3.org > September 2010

Re: action on 3GPP, MP4 and Movie formats

From: Thierry MICHEL <tmichel@w3.org>
Date: Wed, 29 Sep 2010 00:15:30 +0200
Message-ID: <4CA26902.1070604@w3.org>
To: David Singer <singer@apple.com>
CC: public-media-annotation@w3.org, Joakim Söderberg <joakim.soderberg@ericsson.com>, Daniel Park <soohong.park@samsung.com>

Thanks for your input.

I have updated the 3 tables (3GP, MP4,MOV) accordingly, with the small 
differences you mentioned for "ma:description" and "ma:samplingRate"

These are now ready to be integrated into the spec.

Please review and let me know if you are fine
(there are a few question marks which should be resolved: (RFC ????, use 
MPEG-7, perhaps?)

About your issue on the column 'relation',
Relation: the semantic relation. Possible values are: more specific, 
more general, related, exact, non applicable (N/A).

see for example

3GP table:

MP4 table:

MOV table:



Le 28/09/2010 19:19, David Singer a écrit :
> Hi guys
> I filled out the table for 3GPP, and for 99% of the time this also supplies information for MP4 and Movie files as well.
> For all these, the only XPath I know that is defined is selecting a track;  in 3GP, MP4 and Movie files, tracks may be identified by track ID, using the ISO/IEC 21000-17:2006 "ffp()" syntax (#ffp(track_ID=101), for example).
> The one item that differs between the formats is 'description'.  In 3GPP, this is the dscp user-data item.  In 'classic' movies, it's probably İinf (information about the movie); but the language codes and text encodings used in classic user-data would need some ... exploring.  MP4 files have no native format for expressing this, unless you consider MPEG-7 such.
> I made the table in Excel;  if this is the right information, and the right level of info, Courtney and I could work on getting it into HTML.  (I added a column of 'what this item is' for my own reminder, it's not in the normal tables).
> I'm not sure I understand all the columns, mind you.  What goes in 'relation'?
> This body part will be downloaded on demand.
Received on Tuesday, 28 September 2010 22:16:01 UTC

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