QuickTime is a multimedia framework developed by Apple Inc., capable of handling various formats of digital video, media clips, sound, text, animation, music, and interactive panoramic images. It is available for Mac OS (Mac OS 9, 8, 7, etc.), Mac OS X and Microsoft Windows operating systems.
A codec is a device or computer program capable of encoding and/or decoding a digital data stream or signal. The word codec is a portmanteau of 'compressor-decompressor' or, most commonly, 'coder-decoder'.
The Main Third-party Quicktime Codec
DivX
The latest DivX Codec (Win or Mac) lets you play DivX video in QuickTime Player and also consists of improved tools for the utmost encoding quality and performance, making it the best choice to convert or create your own DivX video content.
Xvid
The Xvid component for QuickTime allows users to play & encode Xvids in QuickTime Player. Xvid is a video codec library following the MPEG-4 standard.
QuickTime related software
VLC Media Player for MAC
VLC (initially VideoLAN Client) is a highly portable multimedia player for various audio and video formats.
Blackout Media Player 0.97 Beta
Destiny Media Player 1.4.1
Windows Media Player
Convert Quicktime to MPEG Related Resource
Quicktime Update
Convert Quicktime to MPEG
Quicktime