音频(Audio)
• Windows Media Audio (WMA) versions 7, 8, and 9
• MP3 with fixed or variable bit rates from 8 to 320 Kbps
视频(Video)
• Windows Media Video 7 (WMV1)
• Windows Media Video 8 (WMV2)
• Windows Media Video 9 (WMV3)
• Windows Media Video Advanced Profile, non-VC-1 (WMVA)
• Windows Media Video Advanced Profile, VC-1 (WMVC1)
• H.264 video and AAC audio (also known as MPEG-4 Part 10 or MPEG-4 AVC)