[Tycon3] blurry video quality

[Thomas Oppelt]

Hi Fabrizio,

my acknowledgment for your great engagement. i just want to add that you 
could also grab the video signal after looping it through a 
scanconverter (most university multimedia labs own that ;) ? ), by doing 
this you don't need to install any sw on speakers laptops to get it over 
lan. it might be necessary to amplify the signal, cause lots of laptops 
have evil output signals. we made good experiences with that. it might 
also be interesting to combine the whole stuff (speaker and presentation 
slides/streams) within one single player e.g. by SMIL if you are using 
realmedia. maybe have a look at one of the videos available here: 
http://www.rrzn.uni-hannover.de/pysikertagung.html
(sorry, thats just german stuff ;), and needs a bit bandwith ;) )

greets & thx again
tom

Fabrizio Branca schrieb:
> Hi,...
> 
> after following your discussion here, I should post an answer: I am one 
> of the two guys who recorded the talks. First we wanted to record 
> everything with an screencapture tool over VNC, but this was not 
> possible, because they don't wanted the speaker to install a VNC server 
> on their Laptops. So we organized the Cams. The source data is not that 
> good, because recording
> - a beamer
> - from a distance
> - in a dark room
> - while people walking in front of the camera
> - with speakers who wont't speak directly to the microphone (even if you 
> tell them)
> are not the best conditions for good videos.
> 
> Then we wanted to upload the videos soon, so we decided to convert them 
> and first not to edit them. The first videos were on the Tycon3 
> fileserver on Saturday morning of the conference (after having spend 
> nearly all friday night in front of the computer). We decided to use 
> realmedia, because we wanted to upload them to our realmedia streaming 
> server.
> 
> After reading so much criticism here, I decided to convert them again. 
> (That means, spending at least one more day with the tycon videos, while 
> I should do my other stuff...) So I started to edit them (deinterlacing, 
> sharpen, brightness, noise reduction,...) and our computers are 
> converting them now to
> 
> - divx6 (nearly original mpeg2 quality, 45 min = around 200 MB)
> and(!)
> - wmv (less quality, but better then realmedia, 45 min around 30 MB)
> 
> So I hope everyone will be satisfied.
> 
> At this time there are two computers converting the videos, but in the 
> afternoon there will be some more, so I hope that we can offer the 
> videos during the day of tomorrow on our servers...
> 
> Bye, Fabrizio