On Wed, Dec 12, 2007 at 11:42:56AM -0500, Dan Williams wrote: > On Wed, 2007-12-12 at 10:39 -0500, Chris Ball wrote: > > Hi, > > > > > We do already have a video-chat activity under development - due to > > > priorities it hasn't been updated in a while but collaboration on > > > that would be welcome. > > > > In particular I think the problems with video-chat were: > > > > * There's no stream/VOIP support in Gabble (or was it Salut?) > > Well, you really, really want to do the video/voip stuff out-of-band WRT > the jabber-based communication protocols that salut & gabbled do. So > you use the presence system to _find_ the other person you want to talk > to (or use SIP or whatever), but you have to use some other mechanism > than jabber to actually talk to that person. So neither Gabble nor > Salut are actually involved in any of this.
This seems a bit confused.. When using VOIP with gabble, you use the jingle standard to negotiate the codecs used. The actual audio/video data is obviously transmitted via out of bound (any other way doesn't make sense).. This is how voip calling works on for example the N800 using jabber/google talk. Telepathy also has a SIP CM, but it doesn't make much sense to me to use that just for signalling while XMPP can do the signalling just fine :) > > * We don't have a video codec to use! We don't think we can handle > > the CPU load of encoding and decoding Theora in real time. The > > previous videoconferencing demo used h.263, but we're guessing we > > can't ship that for patent reasons (although I don't think anyone's > > done the research?). > > There are three versions of H.263: H.263, H.263+ and H.263/2000 (or > H.263++). The first one and second might be usable, but H.263/2000 is > totally unusable for legal/patent reasons. > > And, of course, it would be best to work on getting the Theora > encoder/decoder working faster for the XO hardware to ensure that > there's a completely free, open, and unencumbered solution available. Codecs are indeed the bigger issue.. #1491 does contain some usefull information about the diferent possibilities.. But imho getting theora to rock on the XO would be great (and not just for video conferencing) Sjoerd -- The moss on the tree does not fear the talons of the hawk. _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
