在Mac OS下安装perian后，PowerPoint即可以播放绝大多数格式的视频文件。
From: http://www.perian.org
Perian is a free, open source, QuickTime component that supports many popular media types, including AVI, DivX, and XviD.
File formats
- AVI
- DIVX
- FLV
- MKV
- GVI
- VP6
- VFW
Video types
- MS-MPEG4 v1 & v2
- DivX
- 3ivx
- H.264
- Sorenson H.263
- FLV/Sorenson Spark
- FSV1
- VP6
- H263i
- VP3
- VP8
- HuffYUV
- FFVHuff
- MPEG1 & MPEG2 Video
- Fraps
- Snow
- NuppelVideo
- Techsmith Screen Capture
- DosBox Capture
Audio types
- Windows Media Audio v1 & v2
- Flash ADPCM
- Xiph Vorbis (in Matroska)
- MPEG Layer I & II Audio
- True Audio
- DTS Coherent Acoustics
- Nellymoser ASAO
AVI support
- AAC
- AC3 Audio
- H.264
- MPEG4
- VBR MP3
Subtitles
- SSA/ASS
- SRT
- SAMI