Le jeudi 15 décembre 2005 à 15:36 +0930, Malcolm Caldwell a écrit : > Just on the the whole 'better video codecs' thing. > > I will be brutal and say that gnomemeeting will only every be a 'voip > client that can also basic video' until there are better video codecs. > h263 at the last, h264 to be a bit more modern, and theora to be 'open > source' >
That is right. > We cannot afford to wait until Craig and Robert implement video plugin > codecs. This might never happen. That is right too. Any contributor willing to do it? > > While on the subject: gstreamer is gaining rtp packetisation abilities. > Perhaps gstreamer could help implement codecs in gnomemeeting? Or > perhaps even video codecs? gstreamer is lgpl. > Not necessarily. > On Thu, 2005-12-08 at 15:42 +0100, Conrad Beckert wrote: > > Hi Damien, > > > > > Patents are not on the code, they are on the technics, so it is certainly > > > not legal, > > > at least in the US. In Europe, it is still a bit "vague". > > Fortunately, the EU-parliament rejected the proposal for computer > > implemented > > inventions in July 2005. That happened after long struggle and intense > > lobbying by civil liberty groups such as e.g the http://www.ffii.org/ To > > keep > > our freedom, we have to use it to show that it is valuable :-) Otherwise we > > will loose it sooner or later. > > > > The codec issue is a rather big one when it comes to videoconferencing, > > since > > 1- Image quality H.261 is inferior to what the usual suspects the e.g. > > Messengers have to offer. > > 2- most SIP User Agents like e.g. xten, wengophone or the Java > > sip-communicatior don't support H.261 anymore - so you can't issue a video > > call from/to these clients using Gnomemeeting > > - the same goes for hardware phones / conference systems > > 3- as someone on this mailing list mentioned and I was told by a person > > related to deaf/hearing impaired people: it's hard to "talk" in sign > > language > > over it (but this is actually a nice application for video telephony.) > > > > > However, there is a licensing problem. x264 is GPL, and OPAL/OPENH323 ... > > > x264 should add an exception clause for OpenH323/OPAL in their license. > > Well, ffmpeg is LGPL which means that you can link it as a library. Check > > out > > ther legal pages http://ffmpeg.sourceforge.net/legal.php > > > > Having compiled ffmpeg a while ago, I remember, that there is a "GPL" > > compile > > option which means, that it disables all codecs which are non LGPL > > compatiple. > > I wonder what's the case with H.263 (which would be a quantum leap to have > > it- > > though it's not 264) > > > > I also wonder how the Wengo guys and java sip-communicator folks solved > > their > > legal problems concerning 263. (these are open source projects as well - > > some > > GPL) > > > > Another idea, which would solve point 1 and 3 but not 2 above: use Theora. > > Check this out: http://www.tipic.com/tipicim - it's an open source Video > > Jabber messenger using Theora as video codec. Perhaps opal/Gnomemeeting > > could > > benefit. This would do to video what Speex did for audio - a decent free > > codec. > > > > > > Greetings > > Conrad > > > > > > > -- > > > _ Damien Sandras > > > (o- > > > // GnomeMeeting: http://www.gnomemeeting.org/ > > > v_/_ FOSDEM 2006 : http://www.fosdem.org > > > SIP Phone : sip:[EMAIL PROTECTED] > > > sip:[EMAIL PROTECTED] > > > > > > _______________________________________________ > > > GnomeMeeting-list mailing list > > > [email protected] > > > http://mail.gnome.org/mailman/listinfo/gnomemeeting-list > > > > > > > > > > _______________________________________________ > > GnomeMeeting-list mailing list > > [email protected] > > http://mail.gnome.org/mailman/listinfo/gnomemeeting-list > > _______________________________________________ > GnomeMeeting-list mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/gnomemeeting-list -- _ Damien Sandras (o- //\ GnomeMeeting: http://www.gnomemeeting.org/ v_/_ FOSDEM 2006 : http://www.fosdem.org SIP Phone : sip:[EMAIL PROTECTED] sip:[EMAIL PROTECTED] _______________________________________________ GnomeMeeting-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnomemeeting-list
