Webcasting is videoing a live event and streaming it on the web for others to watch. Here’s how to do a webcast from you mac.
To do a webcast you need soem software on your mac to encode the video and send it to a server, then you need the server to stream it to each person who is watching.
I have used wirecast as the software and justin.tv as the streaming server and they both seem easy to use and good quality.
1. Sign up with justin.tv at http://justin.tv. Your login name will be the web address of your webcast as in justin.tv/loginname
2. Download wirecast from here. You can unlock it for $449 (yes $449) or use it as a demo which has an advertisement for wirecast every minute or so.
3. Plug your digital camera into the mac firewire port and turn it on. Launch wirecast and you will see your camera in the video panel. Drag the image from your video camera from the bottom thumbnail into the main broadcast window to tell Wirecast that that is what you want to broadcast.
4. Go to the Broadcast menu and select ‘Broadcast settings’
Under Encoder Preset, Select ‘flash Low Bandwidth
(this will do a 320 x 240 stream that should stream OK up a 256K uplink.)
Under Destination, Select justin.tv
Enter your justin.tv username and password, press generate RTMP,
Press The broadcast icon in the top left corner, and it should stream, it takes about 30 seconds to get going before you will see it at justin.tv/yourlogin
Wirecast costs lots of money.
You can use Quicktime broadcaster as a free alternative to Wirecast, and thanks to justin.tv there’s a page with all the settings for Quicktiem Broadcaster here. I tried Quicktime Broadcaster, and sometimes the stream was just a black page, other times it worked. Also the video quality was slightly less than wirecast. So if you need it to be very reliable I’d go with wirecast. QT Broadcaster seems to be fine once you’ve got it up and running. I found the problem came when I stopped then re-started the broadcast, so once it’s working, keep it going!
There is a setting to use from within the justin.tv webpage to upload video without the help of a third part piece of software like wirecast, but this gave very poor quality video.