Re: [rtcweb] a couple of comments on the latest API draft

[Stefan Håkansson <[e-mail]>]

Rob,

thanks for providing this input. However, the right place to discuss 
this kind of things is the [e-mail] list (cc'd), not the 
IETF rtcweb list.

Thanks,
Stefan (one of the webrtc chairs)

On 10/21/2011 10:53 PM, Robert O'Callahan wrote:
> http://dev.w3.org/2011/webrtc/editor/webrtc-20111017.html
>
> I'm not sure that "blackness" is the appropriate output for a finished
> MediaStream. HTML media elements that aren't playing anything are
> transparent. For consistency, it's probably better for MediaStreams that
> aren't playing anything to also be transparent.
>
>     When a |MediaStream
>     <http://dev.w3.org/2011/webrtc/editor/webrtc-20111017.html#mediastream>|
>     object ends for any reason (e.g. because the user rescinds the
>     permission for the page to use the local camera, or because the data
>     comes from a finite file and the file's end has been reached and the
>     user has not requested that it be looped, or because the stream
>     comes from a remote peer and the remote peer has permanently stopped
>     sending data, it is said to be finished .
>
>
> What if the user reinstates permission for the page to use a camera, or
> the author modifies the source to add looping or otherwise replenish the
> data (e.g. by restarting the source via some API)? In general,
> especially as we add more sources, it's going to be hard to ensure that
> the ended/finished state (I think probably you should remove all
> mentions of "finished" in favour of "ended") is truly permanent.
> Certainly if we allow arbitrary media elements to be used as sources (as
> I think we will want to), the author can cause the media element to play
> again after it's finished.
>
> I'm not sure what to do about this, but if we could allow MediaStreams
> to exit the "ended" state, that would be good.
>
> Rob
> --
> "If we claim to be without sin, we deceive ourselves and the truth is
> not in us. If we confess our sins, he is faithful and just and will
> forgive us our sins and purify us from all unrighteousness. If we claim
> we have not sinned, we make him out to be a liar and his word is not in
> us." [1 John 1:8-10]