Since buying a MacBook Pro for my wife (which also serves as a backup machine in case mine disappears) I’ve had the opportunity to use the video chat feature more often than I have before. However, it seemed to not work nearly as well in Snow Leopard as it had in earlier version of iChat. The video on both of our ends would freeze, with the only remedy being to end the video chat and start over, only to have it freeze seconds later. To add insult to injury, iChat seemed to have an eye to always pick an inopportune frame to freeze on. Needless to say, this issue makes iChat video unusable.
There’s a fix for that.
First, you need to find iChat in your Applications folder. I usually tell people to click on the desktop, then go to the ‘go’ menu, and select ‘Applications’ from the options. Single click on iChat.
Next, either select ‘Get Info…’ from the ‘File’ menu, or press ⌘-i on your keyboard to open the Information panel.
In the information panel, there should be a checkbox next to “Open in 32-bit mode”. Put a check mark in that box and close the window.
Finally, quit iChat and open it back up again.
Your video problems should have gone away.