Perian is reaching the end of its life cycle, and the developers have announced that they’ll no longer support the project, or update it for the upcoming Mountain Lion release. The popular QuickTime plugin that helped bring codec support to OS X when it needed it the most six years ago will stop being supported in 90 days.
The project will be placed on Github or Google Code once the Perian team wraps up with it, but that doesn’t exactly ensure that the project will live on and continue to be supported. VisualHub was killed off back in 2009 and the source code was released to the public, but there still hasn’t been a spinoff of the application worth downloading. That said there are a couple of other apps that pretty much handle all the codecs that Perian does at this point. You can hit up VLC and get support for all of your various video codecs. The project should have you almost entirely covered.
I’m pretty bummed, though; Perian has always been one of the first plugins I download whenever a I buy a new Mac. Ah well, best of luck to the Perian team. We can’t wait to see what they do next.