- From: Charles McCathieNevile <chaals@opera.com>
- Date: Wed, 23 Dec 2009 13:36:15 +0100
- To: "Ian Hickson" <ian@hixie.ch>
- Cc: wai-xtech@w3.org
On Thu, 17 Dec 2009 05:09:41 +0100, Ian Hickson <ian@hixie.ch> wrote: >> On Tue, 15 Dec 2009 22:47:45 +0100, Ian Hickson <ian@hixie.ch> wrote: >> > ... I've been looking specifically at how to expose >> > Webcams to Web pages: ... > I've checked in the most recent changes to the draft above into the > html-device draft mentioned here: > > http://lists.w3.org/Archives/Public/public-html/2009Dec/0355.html > > ...that is: > > http://dev.w3.org/html5/html-device/ Thank you. It is not clear how to *send* the data - the example I am looking at seems to play locally, and unless you have something to serve content like Opera Unite I don't see where you plan to put the Stream so someone else can look at it. Video chat with myself isn't so compelling. Am I missing something, or is the draft still missing something? A few thoughts. Note that the answers to these may well be found in making the video and audio elements support accessibility (and the questions are relevant there) even if this element never goes anywhere. 1. I don't see that you need to solve the codec problem independently of the general value of solving it for the video element. I.e. if there is a baseline format that all user agents support then that makes life much simpler for everyone, but this use case is about two individuals who (presumably) have some kind of relationship - whether that's for a personal chat, or a paid webcam service. It would seem that there is far less problem in selecting an appropriate channel in this case than when a content producer wishes to broadcast. 2. It is not clear how I would add (e.g.) captions and similar accessibility accommodations into the stream, such as a second video using a signed interpreter. Some use cases: 2.1 A group of people are meeting, via audio. As a combination aide memoire, record, means to avoid clogging the audio channel with interruptions, and accommodation for a deaf member of the group, they also run an associated live text channel. These two resources are perceived as more or less synchronised by the participants (who therefore also add running commentary relying on the synchronisation to provide context). Yet it is unclear how to record this text chat with the stream in the current API. 2.2 A University offers courses in "semi-presence" mode, with students attending some classes and following others by video. A masters program in this mode has attracted students from around the globe, including deaf students from 3 countries. All the lectures are automatically recorded in video, and to meet its students' needs the university provides a sign language interpreting service, making a related video available for each of the three sign languages used by the students. How do you offer these tracks together as an (apparently) integrated stream? (I'll leave this here, having written it a while ago and not had time to give it more thought since). cheers Chaals -- Charles McCathieNevile Opera Software, Standards Group je parle français -- hablo español -- jeg lærer norsk http://my.opera.com/chaals Try Opera: http://www.opera.com
Received on Wednesday, 23 December 2009 12:36:55 UTC