Streaming (in broadcast) a meeting for a university

[Coachy]

Hello,

I am french, then excuse for ma bad english.
I am Stéphane Pachis, i am working at a french university.
We would like to stream for all the world a meeting.
The bandwith is not a problem (we have a connexion named RENATER who is very high).

Then, to test VLC, i installed on my computer ( win XP pro SP2) the software.
I tried to encode a video from my webcam but it was impossible to see the vidéo in a player.
Here is what i configure :
1 - open VLC media player
2 - check streaming wizard
3 - check stream to network
4 - choose my stream ( directshow : webcam )
5 - in the link "select a stream", i have : dshow://
6 : streaming method : i choose "http" and i put my ip "http://*.*.*.*:8080"(i have apache as web server)
7 : choose MPEG TS as Encapsulation format
8 : choose 1 as TTL

After all this feature, i have nothing on my ip.

Could you help me to understand what i have to do to have the vidéo of my webcam on my player.

Thanks for your help.

Stéphane
ps : i have msn messenger, if you could help me in IRL : coachs@hotmail.com

[Coachy]

Nobody can help me ?

[zorglub]

Hello,

For webcam, you absolutely need to transcode, which the wizard does not allow (yet?). You should use the "normal" GUI, which is fairly documented in our "streaming howto"

[Coachy]

Thanks for your anwser ...

i have found how transcode the stream.
Is it possible to play the stream in IE for exemple (with a wmp player).

I tried to do it but nothing arrive in the windows, but it works with the vlc player.

Thanks for your help.

Stéphane

[ggunners]

WMP is pretty picky on what it wants and what works with it.

Try something like this:

sout=#transcode{vcodec=WMV2,vb=512,scale=1,acodec=mp3,ab=64,channels=2}:duplicate{dst=std{access=mmsh,mux=asfh,url=10.203.71.90:80}}

Then in WMP use "mms://10.203.71.90:80".

The only problem is that this is a unicast stream and if you have several clients connected, your streaming computer will slow down and eventually crash. If you unicast, you'll need a "lot" of computers and bandwidth to host your intended audience.

[dirkucs]

Hi there, i live streamed a surgical operation (3 Cams in 3 Streams) over our network some weeks ago without any problems, but i did not use the http streaming but a udp multicast and finally all worked well.

:sout=#transcode{vcodec=mp4v,vb=3072,scale=1,acodec=mpga,ab=192,channels=2}:duplicate{dst=std{aacess=udp,mux=ts,url=239.255.255.1:1234}} :ttl=3

Be careful to use the :ttl option, once i forgot it and all network hardware went down, i think because of some packets going pingpong from router to router.

For the 2 other streams i used multicast ip 239.255.255.2 and ~.3, on the receiving clients i used several instances of vlc to receive the stream without any problems.

in our 100mb-Lan this generated a load of about 7% according to taskman, but apart from the video i had a seperate audio stream running back to the encoding machines to have a communication channel to the ones doing the surgery.


Dirk

[md]

Just a note - it's much better to use RTP with IP multicast, since RTP is able to correctly handle standard network events like packet reordering/duplication etc.

You just need to specify access=rtp instead of access=udp