W3C home > Mailing lists > Public > public-media-fragment@w3.org > March 2010

Re: ACTION-155: Figures illustrating URI fragment Resolution in HTTP

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Thu, 25 Mar 2010 10:44:59 +1100
Message-ID: <2c0e02831003241644i740a3832j3625cd87422f85f7@mail.gmail.com>
To: Davy Van Deursen <davy.vandeursen@ugent.be>
Cc: public-media-fragment@w3.org
Hi Davy,

I think some of the "durations" have gone wrong...
I believe 50 is the duration of the file in sec and 59000 is the bytes, right?
I'm making change suggestions based on this:

Single Byterange:
5.2.3:
Should
  Content-Range-Mapping: t:npt 10-20/59
be
  Content-Range-Mapping: t:npt 10-20/50 ?

5.2.4:
Should
  Content-Range: t:npt 10-20/59
be
  Content-Range-Mapping: t:npt 10-20/59 ?
And should
  Content-Range-Mapping: t:npt 10-20/59
be
  Content-Range: t:npt 10-20/50 ?
and should
  Content-Range-Mapping: bytes 0-2000/32000
be
  Content-Range: bytes 0-2000/59000 ?
(Note both the change with -Mapping and the duration)

Multiple Byte Ranges:
5.2.1:
I believe it is also possible to pack two byte ranges in one request,
i.e. ask for
Range: bytes=2000-13000
Range: bytes=24000-28000
in one request.  Yves? Then the reply is also a multipart/byteranges
and one round trip is saved.

Should
  Content-Range: bytes 2000-13000/32000
and
  Content-Range: bytes 24000-28000/32000
be
  Content-Range: bytes 2000-13000/59000
and
  Content-Range: bytes 24000-28000/59000 ?

5.2.2
Should
  Content-Range: bytes 2000-13000/32000
and
  Content-Range: bytes 24000-28000/32000
be
  Content-Range: bytes 2000-13000/59000
and
  Content-Range: bytes 24000-28000/59000 ?

5.2.4
Should it have a
  Content-Range-Mapping: track video; include-setup
instead of
  Content-Range: track video
header?
And should
  Content-Range-Mapping: bytes 0-2000/32000
and
  Content-Range-Mapping: bytes 2000-13000/32000
and
  Content-Range-Mapping: bytes 24000-28000/32000
be
  Content-Range: bytes 0-2000/59000
and
  Content-Range: bytes 2000-13000/59000
and
  Content-Range: bytes 24000-28000/59000 ?
(Note both the change with -Mapping and the duration)

Cheers,
Silvia.

On Wed, Mar 24, 2010 at 5:57 PM, Davy Van Deursen
<davy.vandeursen@ugent.be> wrote:
> Hi Silvia,
>
> On mrt 24, 2010 at 00:51, Silvia Pfeiffer wrote:
>> Can you attach the new diagrams?
>
> I updated the file on the wiki, so you can access it with the same URL:
> http://www.w3.org/2008/WebVideo/Fragments/wiki/images/3/38/Mediafragmenthead
> ers.pdf.
>
> Best regards,
>
> Davy
>
> --
> Davy Van Deursen
>
> Ghent University - IBBT
> Department of Electronics and Information Systems - Multimedia Lab
> URL: http://multimedialab.elis.ugent.be/dvdeurse
>
>
>
>
>
>
>
>
>
Received on Wednesday, 24 March 2010 23:45:52 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 21 September 2011 12:13:38 GMT