It supports H.264, WebM, and Theora video – all very nicely on my G5. Aurora is a Leopard-specific build of TenFourFox that is currently at version 20.0a2.Theora seems a bit smoother than WebM on the G5. TenFourFox provides WebM and Theora playback, but not H.264.Quality is good on the G5 and not bad on the G4. As with Tiger, only Theora displays video. Opera 10.6.3 is the most recent version for Leopard as well as Tiger on PowerPC Macs.Leopard runs a newer version of Safari, 5.0.6, which only supports H.264/MP4 video, not WebM or Theora.Our advice to Tiger users: Use Safari for H.264 and TenFourFox for Theora and WebM. Theora works nicely, WebM works very poorly on the G5 but nicely on the G4, and H.264 does not work at all. The current version is 31.4.0, and I used it with QuickTime Enabler v.120 installed, which lets TFF use QuickTime to display video.
Firefox) that is optimized for G3, G5, and two varieties of G4 CPUs. It is a PowerPC specific port of Mozilla (a.k.a.
Carbon is used for applications that can run on both OS X and earlier Mac OS machines, and Classic is the API prior to Mac OS X.
Cocoa is the native OS X interface, derived from OpenStep. There have been five programming interfaces (APIs) for writing Mac OS X applications. However, PowerPC applications could run on Intel Macs via an emulator (see Rosetta). In 2006, Apple switched from the PowerPC to the Intel platform, and Classic support was dropped in the Intel version of OS X. Classic was not preloaded on new Macs, but was available for installation from the system disks.
Prior to Mac OS X 10.5 (Leopard), OS X ran legacy OS 9 and earlier applications via its Classic software, which was a full copy of OS 9 that ran as an OS X process. The heart of OS X is the open source, POSIX-compliant Darwin kernel, which includes an enhanced BSD 4.4 operating system and Mach 2.5 microkernel. OS X added protected memory, pre-emptive multitasking, multithreading and symmetric multiprocessing (SMP) to the Mac world. For the first time, the rich set of Unix commands became available to all Mac developers (A/UX was an earlier Unix OS for the Mac but was not widely used). Based on Unix and featuring an entirely redesigned user interface, OS X was a major departure from the previous OS 9 system. OS X Server was introduced in 1999, and the client version came out in 2001. As a result, all the names of Apple operating systems have the same OS suffix (macOS, iOS, iPadOS, tvOS).
This article is provided by FOLDOC - Free Online Dictionary of Computing ( ) Mac OS X(Mac OS 10) The operating system from Apple for the Mac family from 2001 until the fall of 2016, at which time the Sierra OS Version 10.12 began using the rebranded "macOS" moniker.