Mac Video Playback
Thanks to the efforts of open-source teams to port their work to Mac OS X, playback of nearly all common video types is possible on Macintosh computers. Listed below are some of the more popular video player options.
• Perian Quicktime Components are a set of plugins made for use with the Quicktime media playback system that is included with Mac OS X. Including support for many different codecs, it is one of the strongest options, allowing Quicktime Player and other players using Quicktime to play most popular video formats (most notably exluding Ogg Media and Windows Media video files). This option is the closest equivalent to the popular Windows-only Combined Community Codec Pack.
• Mplayer is a very capable multi-platform video player that gains its playback abilities from FFMPEG. Due to its command-line nature, it's not tied to any particular interface, making it easy for developers to create their own front end to use with it. Because of this, most popular platforms have several different front ends that make use of it.
• VLC is similar in concept to Mplayer, but implements several things differently and is notorious for having playback issues with different files. Most experienced users recommend against using this player full-time and instead only keep it around for the occasional stubborn video file that refuses to play properly with other players.
• Flip4Mac is a closed-source freeware plugin for use with the Quicktime that enables users to play Windows Media files within Quicktime Player and other players that make use of the Quicktime engine.