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Re: Track fragments

From: Conrad Parker <conrad@metadecks.org>
Date: Mon, 8 Mar 2010 12:36:28 +0900
Message-ID: <dba6c0831003071936l41b23c3dn5803fa02d24b5722@mail.gmail.com>
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Cc: public-media-fragment@w3.org
On 8 March 2010 12:30, Silvia Pfeiffer <silviapfeiffer1@gmail.com> wrote:
> Hi all,
>
> I just came across this discussion from ealier and wanted to send it
> as a reminder for the WG - when we discuss topic 3 on Monday morning,
> we should discuss a change to
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#naming-track
> where multiple tracks can be specified and the separator should
> probably be ";" (which is what Davy's implementation already uses, see
> below).

yup.

Here's a related discussion, including handling of the
percent-encoding of the semicolon delimiter:

http://stackoverflow.com/questions/2163803/what-is-the-semicolon-reserved-for-in-urls

Conrad.

>
> On Wed, Feb 17, 2010 at 8:54 AM, Silvia Pfeiffer
> <silviapfeiffer1@gmail.com> wrote:
>> Hi Davy, all,
>>
>> On Tue, Feb 16, 2010 at 11:00 PM, Silvia Pfeiffer
>> <silviapfeiffer1@gmail.com> wrote:
>>> Hi Davy,
>>>
>>> On Tue, Feb 16, 2010 at 7:04 PM, Davy Van Deursen
>>> <davy.vandeursen@ugent.be> wrote:
>>>> On feb 15, 2010 at 22:23, Silvia Pfeiffer wrote:
>>>>
>>>>> It is possible do devise a track addressing method that includes some
>>>>> of the other attributes. For example, a combination of type, role and
>>>>> lang could make sense, something like:
>>>>>
>>>>> #track=audio(audesc, en)&video(main,en)&text(cc,en)&text(sub,fr)
>>>>>
>>>>> I just made this up, so feel free to suggest any other markup means.
>>>>
>>>> So 'audio(audesc, en)&video(main,en)&text(cc,en)&text(sub,fr)' corresponds
>>>> to the trackname?
>>>
>>> Nah, I did indeed mess this one up. "&" should not have been used
>>> here, since it separates name-value pairs. You've used semicolon to
>>> separate your track names, so this would be more appropriate:
>>>
>>> #track=audio(audesc,en);video(main,en);text(cc,en);text(sub,fr)
>>>
>>
>> Just reading the current spec, we actually have only ":" and ","
>> specified as substructuring elements (see
>> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#fragment-structure).
>>
>> So, this should actually be
>> #track=audio(audesc,en),video(main,en),text(cc,en),text(sub,fr)
>>
>> Davy, you may need to change your implementation, or alternatively we
>> should add the ";" as another substructuring element.
>>
>> Cheers,
>> Silvia.
>>
>
>
Received on Monday, 8 March 2010 03:37:01 GMT

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