[vlc] FW: Re: Video conference / low latency

[Keith Allen]

Hi

Something odd is going on I am still receiving emails addressed to your
account.

This is no big hassle. I am just making sure you get them.

Keith Allen



------ Forwarded Message
From: Jechiam Gural <gural at noterik.nl>
Reply-To: <vlc at videolan.org>
Date: Fri, 25 Mar 2005 12:42:46 +0100
To: <vlc at videolan.org>
Cc: <peter at noterik.nl>, Bill Eldridge <bill at rfa.org>, <bigben at via.ecp.fr>,
<dedieko at yahoo.com>
Subject: [vlc] Re: Video conference / low latency

Hello,

I have tried live capturing of a video using different capture devices.
Each time I select the stream output functions the video stops displaying.
I'm also not able to connect with a remote VLC to the live VLC encoder. I
would like to ask if someone could post a setup that has been tested and
works. In particular it would be interesting to know

1) Which capture divide is known to work for live encoding
2) Optimal settings to get a stream out at an uplink not more than 500 Kbps
3) Transcoding and View settings to enforce minimal latency between encoded
and viewed signal (Near Video Conference so to speak...)

Thanks,

Gural



At 03:11 PM 4/9/2004, Bill Eldridge wrote:
>Benjamin PRACHT wrote:
>
>>On Wed, Apr 07, 2004, Dedi Eko wrote :
>>
>>>Dear all VideoLAN-ist, I have an idea to utillize VideoLAN ask a
>>>software to do a video conference:
>>>1. Is it possible to do this task with videolan?
>>That is possible, but I wouldn't consider VideoLAN as the best fit
>>application for this right now (although some people are working on that)
>>>2. Can 1 computer do 2 jobs in an instance? Serving directinput video on
>>>port AAAA and accepting stream on port BBBB?
>>That's possible indeed.
>
>With VLC's Mozilla plugin, it's even very easy to view both streams in one
>window (you'll want that for videoconferencing :)
>
>>>5.Is it possible  to do an encryption? Because I  think Internet is an
>>>open line, very  dangerous to get in without any  protection. Is there
>>>any solution than encryption to strenghten security factor?
>>Although there are some cyphering  / decyphering functionalities in VLC,
>>this is not a "out of the box"  feature, and I connot see an easy way to
>>implement it here (I might be wrong on this).
>
>For someone's summer project, MingW is now supported for the OpenSSL
>installer at http://www.slproweb.com/products.html
>
>socketW is a project in C++, but has a very simple SSL encrypted server
>& client example (and works on Windows, Linux,et al)
>
>http://www.digitalfanatics.org/cal/socketw/index.html
>
>Server side example:
>
>
>#include "SocketW.h"
>...
>SWSSLSocket listener;
>SWSSLSocket *mySocket;
>
>listener.use_cert("cert.pem", "cert_key.pem");  // Load certificate
>
>listener.bind(5555);
>listener.listen();
>
>mySocket = (SWSSLSocket *)listener.accept();
>
>// send encrypted message to client...
>mySocket->sendmsg("Hello Client!");
>
>// disconnect and clean up
>mySocket->disconnect();
>delete mySocket;
>
>
>Client side example:
>
>
>#include "SocketW.h"
>...
>SWSSLSocket mySocket;
>
>mySocket.use_verification("cert.pem", NULL);  // Trust the certificates in
>                                               // cert.pem
>mySocket.connect(5555, "localhost");
>
>// Check verification
>SWSSLSocket::verify_info vinfo = mySocket.get_verify_result();
>if( vinfo.result != SWSSLSocket::CertOk ){
>     // We don't trust the server
>     mySocket.disconnect();
>     exit(-1);
>}
>
>// receive encrypted message from server...
>string msg = mySocket.recvmsg();
>
>// disconnect
>mySocket.disconnect();
>
>
>
>--
>This is the vlc mailing-list, see http://www.videolan.org/vlc/
>To unsubscribe, please read http://www.videolan.org/support/lists.html
>If you are in trouble, please contact <postmaster at videolan.org>
>

----------------------------------------------------------------------------
-----------------------------------------
Jechiam Gural

Noterik B.V.
Prins Hendrikkade 120
Amsterdam, The Netherlands

Tel. +31-(0)20-5929966
Fax.+31-(0)20-5929969

http://www.noterik.com
http://www.streamedit.com

Direct tel. nr. +31-20-5929980

July 2004: Noterik wins Dutch ICT Europrix category award for e-Democracy
and e-Government.

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