FFDShow MPEG-4 Video Decoder 20070413 rev1097

　　FFDShow是一款DirectShow解码滤镜,可以解压缩包括DivX、XviD、WMV、MPEG -1和MPEG-2等在内的多种视频格式.滤镜同样还支持电影中所使用的几乎所有音频格式的解码,如AC3、DTS、MP3和Ogg Vorbis,以及诸多字幕格式.编解码器还提供后处理功能,支持几乎所有的MPEG-4视频格式,支持各种处理器提升(诸如SSE和MMX)等等. FFDShow是在GPL许可协议下作为一款开源软件发布的.

　官方下载：
　http://superb-west.dl.sourceforge.net/sourceforge/ffdshow-tryout/ffdshow_rev1097_20070413_clsid.exe

Features of FFDShow MPEG-4 Video Decoder :
- various compression methods:
· MPEG 4 compatible (Xvid, DivX 4, DivX 5) using libavcodec or XviD
· Divx 3 compatible, MSMPEG4v2, MSMPEG4v1
· WMV1/7, WMV2/8
· H263, H263+, H264
· HuffYUV in YV12 colorspace
· MJPEG
· MPEG 1
· Theora (not for regular use, format isn't stabilized yet)
· MPEG 2 by using mpeg2enc code from MJPEGtools project
· all Windows Media Video 9 supported encoders with output to asf/wmv file or AVI
- all common encoding modes: constant bitrate, fixed quantizer, fixed quality, two pass encoding (depends on compressor features)
- for libavcodec and XviD detailed selection of motion estimation method
- minimum and maximum I frames interval
- minimum and maximum quantizer selection, quantizer type and trellis quantization selection for libavcodec
- adaptive quantization (aka. masking) for libavcodec and XviD, single coefficient elimination
- selectable compression of starting and ending credits
- two curve compression algorithms for second pass of two pass encoding - thanks to XviD developers
- second pass simulation: although not very precise, still helpful for tweaking advanced curve compression parameters
- ability to use libavcodec internal two pass code
- image preprocessing with ffdshow image filters (latest ffdshow version must be installed)
- graph during encoding: if your encoding program doesn't provide one
- B frames support: from one to eight consecutive B frames
- support for MPEG 4 quarterpel and GMC
- selectable interlaced encoding
- decompression

更多信息：http://www.free-codecs.com/FFDShow_download.htm