謝謝你的回答，
其實顯卡我也搞不清楚有沒有wmv加速，
我平常都是看MPEG2 TP，用的是CyberLink DTV Video Decoder，
這種avi我只是下載回來測試看看能不能播放，
沒想到要播放這個還這麼複雜。

另外，我的CPU+顯卡對於某些HD影片的確是不夠力，遲早是要換的，
換了之後，才可看.ssa字幕，才有時間壓片...呵呵

下面這是KMP播放時的一些資訊，看來是用 WMVideo Decoder DMO來解碼，KMP我是開Highspeed Mode

[Primary Filtergraph]
0) - [HDTV]임정희-사랑아 가지마(MBC음악중심-20060408)SE.avi
1) - Gabest AVI Splitter
2) - WMVideo Decoder DMO
3) - CyberLink Audio Decoder
4) - OverlayMixer
5) - DirectSound Audio Renderer
6) - Video Renderer

[Video Info]
Decoder - (WMV3) WMVideo Decoder DMO
Format - Major Type: Video - Sub Type: DXVA_ModeWMV9_B
VideoInfo: DXVA 1920X1088, 0 bits

[Audio Info]
Decoder - (0x2000) CyberLink Audio Decoder
Format - Major Type: Audio - Sub Type: PCM
WaveFormatEx: PCM(0x1), 48000 Hz, 16 Bits, 2 Ch

[Basic Video DSP]
Internal brightness: 100%

[Advanced Video DSP]
+Video Plugin

[Audio DSP]
+Pre amplification: Main: (100%)
+Auto Volume Control
+Audio Plugin

[Subtitle Settings]
+Draw Mode(Selected): Image
+Draw Mode(In use): On Overlay
+Text Rendering Method: Rasterizer
+Support HTML Tags(SMI)

[KMPlayer]
+Version: 2.9.3.1200(5,307,392, 2007/1/2 下午 10:52:38)
+libcodec.dll: Exist(3,885,056, 2006/12/25 上午 09:20:22)
+libmplay.dll: Exist(423,424, 2006/12/22 上午 07:41:42)
+PProcDLL.dll: Exist(1,347,584, 2006/12/12 下午 10:17:06)
+LibDTS.dll: Exist(225,280, 2006/4/29 上午 08:54:52)
+liba52.dll: Exist(103,936, 2006/4/8 下午 05:59:36)
+libfaad2.dll: Exist(335,872, 2006/4/8 下午 05:56:22)
+libmad.dll: Exist(86,528, 2005/3/14 下午 09:18:48)
+libmpeg2.dll: Exist(122,880, 2006/9/1 下午 10:21:00)
+theora.dll: Exist(183,808, 2005/8/4 上午 08:55:32)
+OggVorbis.dll: Exist(1,253,376, 2006/10/27 上午 06:51:30)
+xviddll.dll: Exist(593,920, 2006/11/30 下午 09:21:48)
+wmploc.dll: Missed
+wmpui.dll: Missed
+Old_QUARTZ.DLL: Exist(770,048, 1999/5/5 下午 09:22:00)
+AboutDll.dll: Exist(105,472, 2005/10/3 下午 01:12:18)
+DTView.dll: Exist(104,448, 2006/11/20 下午 08:33:18)
+MPlayer.dll: Missed
+ImLoader.dll: Exist(856,064, 2006/1/15 下午 01:21:26)


--------------------
[File Info]
--------------------
D:\[HDTV]임정희-사랑아 가지마(MBC음악중심-20060408)SE.avi
General
Complete name : D:\[HDTV]임정희-사랑아 가지마(MBC음악중심-20060408)SE.avi
Format : AVI
Format/Info : Audio Video Interleave
Format/Family : RIFF
File size : 189 MiB
PlayTime : 2mn 54s
Bit rate : 9065 Kbps
Writing application : VirtualDubMod 1.5.10.2 (build 2542/release)
Writing library : VirtualDubMod build 2542/release
Video #0
Codec : WMV3
Codec/Info : Windows Media Video 9
PlayTime : 2mn 54s
Bit rate : 8860 Kbps
Width : 1920 pixels
Height : 1080 pixels
Aspect ratio : 16/9
Frame rate : 29.970 fps
Bits/(Pixel*Frame) : 0.143
Audio #1
Codec : AC3
PlayTime : 2mn 54s
Bit rate : 190 Kbps
Bit rate mode : CBR
Channel(s) : 2 channels
Sampling rate : 48 KHz
Video0 delay : 19ms
StreamSize : 3.95 MiB
ChannelPositions : L R


--------------------
[System Info]
--------------------
CPU 0: 2010MHz, AMD Athlon(tm) 64 Processor 3200+, x86 Family 15 Model 47 Stepping 0
OS: Windows XP Professional(Version 5.1 Build 2600) Service Pack 2
Video: GIGABYTE RADEON X700

DirectX: 9.0c(4.09.00.0904)
Memory: All: 1,048,048 KB, Available: 612,064 KB, Used: 42%
CodePage: 950, Charset:1
Instruction: MMX MMX2 SSE SSE2 SSE3 3DNOW 3DNOWEXT 64Bits