Perian 1.1が出ていました。Open source QuickTime コンポーネント。フリーウェア。

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