[osflash] videoconferencing

[network congestion]

Hi,

I've been playing with 0.4 for a bit now. Mostly I was looking for the
videoconferencing feature, I've played with the FCS version but have not yet
invested in any codebase. So even if Red5 API is different than FCS I don't
much care as the licensing and restrictions on FCS are just a bit too much
to justify. I really like the idea of renting a cheap Linux dedicated with a
10Mbps pipe and a 1TB transfer allowance, then reflecting video like crazy
through it. Which is what I have done.

Note: I am not a sophisticated developer, I'm just some guy trying
parameters one-by-one. So far Red5 (0.4) running on Centos 4.3 has been very
stable with excellent performance.

Thank you to the nice people who gave this tool to the world.

To those out there who are interested, I'd suggest taking a deep breath and
reading every single .as file, I'd also suggest reading the  dependency tree
that some guy posted to the list last year (use google).

In any case, was able to figure out that sound was simply disabled with a
//comment in Broadcast.as, where most of the action is. I'd suggest the
following changes to Broadcast.as:

        // setup cam
        cam = Camera.get();
        //cam.setMode(160, 110, 8);
        cam.setMode(320, 240, 15);

        // 4.18.2006 - removed per discussion with Luke/John about
performance issues
        cam.setQuality(0,95);
        //cam.setQuality(0,videoQuality.value);
        cam.setKeyFrameInterval(24);
        cam.setMotionLevel(30,250);
        cam.setLoopback(false);

        // setup mic
        mic = Microphone.get();
        mic.setRate(44064);

In terms of the picture size, just start going through the FLA. I was able
to find the window that has the 1st remote session and resize it (I made it
huge). I kept the video window in the connector for upload as it was. The
remaining windows I covered up with other layers.

Re the optimal size for encoding: it's probably a good idea to shoot for a
total (video+audio) upload of around 400Kbps, since most high-speed
connections, even in offices, top out at around 640Kbps. Although it is
possible to limit the upload speed with the cam.setQuality(KB/s,minquality)
but rather than insisting on 100% quality go for 95%, which cuts the
bandwidth by like 40% without apparent loss of quality, and you don't even
have to limit the bandwidth, in the example above it tops out below 400Kbps.

Network Congestion
networkcongestion at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://osflash.org/pipermail/osflash_osflash.org/attachments/20060705/9560e94a/attachment.htm