The final version (1.2.3) still works on systems up to OS X El Capitan. You can find it on the official archive or legacy software sites. Install, then restart QuickTime.
If you are running an old Mac (specifically macOS 10.6 Snow Leopard or older), Perian still works. However, for modern macOS users (macOS Catalina, Big Sur, Monterey, Ventura, Sonoma, Sequoia), perian mac
Perian provided decoding support for a wide range of formats, including but not limited to:
For macOS users, is currently the gold standard. It is open-source, free, and designed specifically for the modern Mac aesthetic. The final version (1
The following essay explores the historical and technical significance of Perian for the Mac platform.
The technical breadth of Perian was staggering for its time. It brought support for a vast array of codecs to the Mac, including: (v1, v2, v3) DivX and XviD Flash Video (FLV) MKV (Matroska) WebM (VP8) AAC and AC3 Audio If you are running an old Mac (specifically macOS 10
