On 3/5/07, nescivi <nescivi(a)gmail.com> wrote: Jörn is very welcome to raise the issues he has on this list. Eventually someone will give a good hint ;-) I'm sure a lot of people far away from berlin would like to be able to give a helpful hand. And I would be surprised if there was no way to multiplex an audio stream... Cheers, __________________ Marc-Olivier Barre, Markinoko.

As usual, Linuxaudio.org will gladly provide data space and bandwidth for for storing streams. Whoever will be in charge of this, please contact me to obtain necessary access info. If I recall correctly past conference feeds are a part of the lad.linuxaudio.org. Best wishes, Ico

well, for the speakers: * it is not necessary that your slides be readable on our video stream - as marije pointed out, downloadable versions will be available. *but*: it would be helpful if your slides were visually distinct enough that video stream watchers can figure which slide is currently up (biggish headlines usually work well, and nobody has ever been dragged from stage for showing nice illustrations...) * the video image would benefit greatly from dark-background slides - this would avoid the speaker getting drowned in darkness when the camera exposure corrects for the bright projection. (not a problem if we have stage lighting for the speaker, but that is unlikely.) * if by luck stage lights are indeed available at and near the lecturer's desk - stay within their range :) * use a traditional pointer or a large laser pointer. very small red dots tend to get lost in low resolution and encoding artifacts... we will try to have fixed camera positions this year or tune the codecs to avoid massive bandwidth surges. regarding the combination of slides and audio/video, the mostest niftiest solution would be to have annodexed ogg streams, but this is not going to happen unless somebody volunteers as a full-time anodex editor during the conference and can set up the necessary toolchain him/herself. regrettably, my annodex knowledge is still limited to what conrad and silvia of csiro taught me 3 years ago at the LAC... as to multiplexing: the problem is that the toolchain we used last year (dvgrab|ffmeg2theora|oggfwd) relies on a dv stream with audio in it. that means that unless we get our hands on very professional camera equipment with external audio ins, the sound has to come from the build-in cam mike (the line ins of consumer-grade cams suck to the point of being completely unusable). the only toolchain i'm aware of that allows for flexible muxing of audio on video after grabbing is flumotion, but i've had mixed results with that in terms of stability. if it can be made to work, that would be my preferred solution. lastly, getting a good sound depends on whether we have the technical equipment and necessary cabling to tap into the conference mixers. should not be a problem, but has not been checked yet. fwiw, i'll be dumping stream-related info at the lac wiki: http://www.medienwissenschaft.hu-berlin.de/lawici/index.php/Live_Streaming regards, jörn