Perian, para mi imprescindible en cualquier mac, es un paquete de plugins para QuickTime para ayudarle a reproducir una gran cantidad de archivos de audio/video tales como avi, mkv, etc.

Los cambios son numerosos, os los adjunto tal y como se describen en las notas de la versión 1.1.1 de perian :

• H.264 in AVI fixed
• Some anamorphic AVI files are now supported
• Performance problems due to PIC fixed with Xcode 3.1
• Incorrect frame skipping on H.264 intra frames fixed
• Better character set detection
• The update checker is now much more polite
• Several parsing and rendering bugs with subtitles fixed
• Player freezing while loading subtitles with embedded fonts fixed
• Audio fixed for some older MKV files with AAC/FLAC
• Strange values in MKV chapters or video sizes are handled better
• Initial support for SAMI subtitles added
• Worked around a QuickTime bug (#5770288) causing frames to be lost during export
• New codecs: DosBox ZMBV, VP6+Alpha, Nellymoser ASAO
• FFmpeg:
• Crashing on PPC G3 fixed.
• Fraps decoding artifacts fixed.

Enlaces Perian | perian 1.1.1 (macupdate)