FFDShow可以称得上是全能的解码、编码器.最初FFDShow只是mpeg视频解码器,不过现在他能做到的远不止于此.它能够解码的视频格式已经远远超出了mepg4的范围,包括indeo video,WMV,mpeg2等等.同时,它也提供了丰富的加工处理选项,可以锐化画面,调节画面的亮度等等.不止是视频,FFDShow现在同样可以解码音频,AC3、MP3等音频格式都可支持.并且可以外挂winamp 的DSP插件,来改善听觉效果.可以说现在的FFDShow已经是windows平台多媒体播放的非常出色的工具了。
FFDShow MPEG-4 Video Decoder 功能 :
- 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
最新更新:
Changes from FFDShow rev. 970 to FFDShow rev. 1019 :
- Smoother fast forward/rewind and better OSD display. Bug corrected (preset list retrieval could crash)
- Bug fix of rev 894: embedded DVD and vobsub subtitles were not shown.
- Update Gradient glowing shadow
- subtitles font dialog: disable fast rendering when shadow is enabled.
- Bug corrected : stack memory allocation should not be freed
- ffmpeg 8296-8298
- subtitle fixes
- changed default settings
- OSD color : responding to rev 999
- subtitle font weight : "bold" for default
- subtitle : more smooth edge (related to rev 999 fix
- fix occasional crashes on Glowing shadow
- Subtitles font page : French translation updated
- Wrong comment in code
- Increased the threshold for subtititles blurring effect (from 128 to 180). It may be interesting to add it as a new parameter in the dialog
- Oups, disabled shadow option was not functional. Fixed
- Fixed the "gray" subtitles issue. Now the chosen color is not washed out anymore :)
- Added an option to disable the subtitles shadow
- Fixed compilation warnings
- Oups, also committed my ffdshow_2005.vcproj file.
Still, the current version does not compile on XP or Vista with the preprocessor definition _WIN32_WINNT=0x0400. It should be removed.
I put back the original project file though
- Dialog options for subtitles shadows
- fix error 0xC0000005 during registration ffdshow.ax
- Bug fix: Deleting the active and default preset caused a crash.
- Added configuration entries for subtitles shadow
- Added shadows to subtitle with 3 modes (glowing, classic with gradient, classic with no gradient).
Configuration of these modes, plus transparency and shadow size need to be added into the interface.
- FFV1 encoder: fix keyframe distance
- fix 'SinkuHadouken.exe'#1310 -> 'SinkuHadouken.exe'#13#10 (rev 976 bug)
- add one compatible application and fix realplay.exe/SinkuHadouken.exe compatibility list.
- compilation fix (GCC's bug??)
- Show DAR at the right to "Keep original aspect ratio".
- Minor resource fix
- exclude libavcodec-WMV from "Set all stable formats to libavcodec".
- srt subtitle:fix sticky italic
- added one compatible application
- added three compatible applications.
- Updated WEB content.
- the audio dialog is updated every 50ms (20fps). This may use CPU a lot, but it's user's choice to display the dialog during playback.
- The changes in TffdshowPageBase.cpp avoid freezing when CPU can't catch up with the refresh rate (mainly Mixer, on slow CPU).
- flipped NV12
- updated icl9 and msvc71 binaries
- Fixed one warning.
Download: 下载链接 http://www.vistacodec.com/files/ffdshow-rev1019_20070311.zip
Download: 下载页面 http://www.free-codecs.com/FFDShow_download.htm