On Tuesday 24 February 2009 12:39, Rajeev R. K. wrote: > On Tue, Feb 24, 2009 at 10:31 AM, jtd <[email protected]> wrote: > > On Tuesday 24 February 2009 02:24, Rajeev R. K. wrote: > >> On Sun, Feb 22, 2009 at 8:24 AM, aditya <[email protected]> wrote: > >> >> Keeping aside the cost and availability of net bandwidth, is > >> >> this possible with Linux. > >> > > >> > I could be mistaken but I don't think any open source video > >> > conferencing software can handle High Def. video streams yet. > >> > In addition, you'd need camera units on both sides which can > >> > support HD - that, unfortunately, rules out your average > >> > webcam or capture device. > >> > >> Now, all that is needed to turn this into a conference, is a > >> camera and linux box at the other end, and voila, we have a 2 > >> way video conference. > > > > That is one to one. Not a conference in the true sense. One needs > > a gatekeeper and additional capabilities at the client to view > > multiple streams in one composite window. Afaik vlc and mplayer > > do not have this capability. > > Again, Tiling multiple streams is simple to add on, just take > multiple stream url's. i could put together a simple shell script > to tile the video windows in such a fashion, even doing a P-i-P for > the local video :) And the icecast server can be used as a > gatekeeper, if you tack on a little bit of code/metadata on top > (Like have the ability to register a conferenceid along with a > source stream, and allow only authorized clients to join a > conference etc, changing mostly auth, and none of the core > functionality.)
You will need multicast. vls had multicast (proly vlc too), not sure about mplayer. Ofcourse one could use Ekiga. But then the fun of all the scripting is gone ;-) > But if all you need is a > Point-To-Point Conference, a simple Zenity based GUI and you're up > and running.. Also, here you're looking for HD quality, you are > looking to cover a room, not individuals, so it is probably > point-to-point(i.e. Room-to-Room usage, not many face-to-face > usage, so unless you want to see the latest morning-after stubble, > an old fashioned webcam is good enough for that). Webcams (CMOS) add plenty of noise and hence increases bw, which is not noticed because pics are cif /qcif and frame rate limited to 15fps. the pics are baad compared to a good ccd cam. > The essence is ready, i.e. the ability for multiple parties to > receive each others audio/video. We should try it at the next lug meet. -- Rgds JTD -- http://mm.glug-bom.org/mailman/listinfo/linuxers
