QuickTime ships with all copies of Mac OS X and provides photo, audio, and movie playback services to many programs and the operating system itself. There are however many movie codecs in use on the web which aren't natively supported by QuickTime. Movies encoded with these refuse to play unless a specialized QuickTime component is installed.
In the past, users had to download and install numerous codecs to gain access to the full range of available movies; Perian simplifies the process. In one fell swoop, freeware Perian adds support for video codecs including AVI, FLV, 3ivX, DivX, Flash Screen Video, MS-MPEG4, Sorenson H.263, Truemotion VP6, and Xvid AVI. It also supports audio codecs such as AAC, AC3 Audio using A52Codec, H.264, MPEG4, and VBR MP3! Nearly every common format is supported with the exception of WMV (windows media) which can be added with the free Flip4Mac.
Installation is simple - drag the Perian.component file to your /Library/QuickTime folder and optionally remove any older components which Perian replaces. Congratulations - your computer will now be able to play almost any video or audio file you throw at it!
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