Category: Video Chat

Online chat with live video streaming.

Setting up VideoWhisper RTMP on Influxis

If you have a FMS account with Influxis, use these instructions for setting up a new application:

1. Create application from Tools > New App Builder or My Applications > Add New Application. Use any name i.e. “videowhisper” and save generated rtmp path.

2. From Tools > File Manager / File Admin edit videowhisper/main.asc file and make sure it has the contents of videowhisper/main.asc (open it with notepad or other text editor). If needed select all from text editor (CTRL+A), copy (CTRL+C), move to form, select all from there (CTRL+A), paste from clipboard (CTRL+V).
Get VideoWhisper FMIS rtmp side from Downloads : RTMP VideoWhisper Applications > FMIS .

3. From Account Settings > Domain Permissions, Set Referring Domain(s), Add New Domain – add your domain that hosts the flash (i.e. your-domain.com)

4. Reset the VHost for your Influxis account so it loads new applications or updates.
In your Influxis account go to My Applications > FCS Administration Console: Connect then go to Maintenance : Adaptor / VHost: Restart .

Configuring Flash Live Video Streaming Applications

Measure connection capabilities

To configure flash applications streaming you will first need to determine the connections that most users will have. So test first with your connection and also request other users to test.

So let’s consider this situation determined by http://www.speedtest.net (measure speed to a server close to the location of your streaming server):
Download: 9.43Mbp/s
Upload: 0.49Mbps

This looks like ADSL (in this situation upload bandwidth is 20 times lower than total connection bandwidth).

0.49 Mbps = 502 Kbps (kilobits per second)
8 bits = 1 byte,  so that means you can upload with 62 kb/s  (kilobytes per second)

As you can see, usually, connection is the cause of quality and latency limitations. A server with 1000Mbps connection will theoretically be able to handle up to 2000 x 0.49Mbps streams, so the server is not the problem with your tests, unless you’re on a shared plan and other clients are maxing out the resources.

How to configure flash videochat applications?

Considering you also have to upload audio and other data on that connection, you could setup camBandwidth to 49152 bytes/s (allocate for the compressed video stream).
On chat systems buffering should be reduced to 0.1 so delays are minimized. On 1 way streaming systems, you can use higher buffering to increase fluency in case of connection turbulence.

Flash streaming applications vs Skype

Skype desktop application uses different technology than these web based applications limited by browser based flash technology limitations . Skype uses:
–  p2p connections between all users and also uses fast 3rd users as proxies (not using server – so if you are in the same local network with the other tester or with a 3rd skype client with better connection, it uses the local bandwidth)
–  better codecs to get better quality for same bandwidth (flash player currently encodes only h263 and external encoders must be used to encode h264)