FAQ: QuickTime Not Working with Perian
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File size: 3.4MB File name: Perian1.2.3.dmg OS: Mac OS X 10.4.7 or higher ( Yosemite or above is not supported) How do I install QuickTime plugin Perian? After the download process is completed, double-click on the file icon to install the components. How do I uninstall Perian? Before you remove it, shut it down on your computer. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.
1. Cannot open Perian on Mac
Q: I've tried to download Perian from different sources but none of them can be opened because of unidentified developer.
On you Mac, go to System Preferences > Security & Privacy > General > Allow apps downloaded from… and set your preference, try to open Perian again to see if it works. For any users who can't open Perian for QuickTime, we suggest checking if the components are compatible with the version of QuickTime and macOS.
2. QuickTime with Perian won't open AVI files
Q: QuickTime refuses to play AVI files in QuickTime 7. Any straightforward solution for this problem?
It's common that QuickTime won't play AVI files even you have Perian installed on your computer. AVI is a container format introduced by Microsoft, which can contain different types of video and audio codecs unsupported by Perian. You have three ways to solve the error of QuickTime with Perian not playing AVI files:
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Try other QuickTime Player alternative, for instance, VLC Media Player, 5KPlayer, MPlayerX etc.
Convert AVI to MOV, the best video format for QuickTime.
Install other AVI codec packs to help QuickTime play AVI media files.
3. QuickTime doesn't play MKV with Perian installed
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Q: MKV video files won't play in QuickTime with plugin Perian. I downloaded some MKV files but they couldn't open via QuickTime with plugin Perian installed on Mac. I thought QuickTime would work with MKV videos.
MKV is a container format like MP4 and AVI. The reasons why QuickTime is not playing MKV are similar to that of QT not playing AVI files. To play MKV on Mac, try other MKV players for Mac or change MKV to MOV with H.264 codec that is widely accepted.