Open Source component brings support for many popular video formats to Quicktime
Apple | (0)
Just found this very cool Quicktime Component:
Perian enables QuickTime application support for additional Media Types:
AVI, FLV, and MKV file formats
MS-MPEG4 v1 & v2, DivX, 3ivX, H.264, FLV1, FSV1, VP6, H263I, VP3, HuffYUV, FFVHuff, MPEG1 & MPEG2 Video, Fraps, Windows Media Audio v1 & v2, Flash ADPCM, Xiph Vorbis (in Matroska), MPEG Layer II Audio
AVI support for: AAC, AC3 Audio, H.264, MPEG4, and VBR MP3
Subtitle support for SSA and SRT
You can grab your copy over at the Perian Website. My testing so far has proven that it works quite well.