FFDShow MPEG-4 Video Decoder 20090130 Rev2647

FFDSHOW is a DirectShow decoding filter for decompressing DivX, XviD, H.264, FLV1, WMV, MPEG-1 and MPEG-2, MPEG-4 movies. It uses libavcodec from ffmpeg project for video decompression, postprocessing code from mplayer to enhance visual quality of low bitrate movies, and is based on original DirectShow filter from XviD, which is GPL'ed educational implementation of MPEG4 encoder.

FFDSHOW consumes way less CPU power than original DivX codecs, even with maximum post-processing. At the same time the post-processing seems to give excellent quality results and allows more configuring than the original DivX 5 codec. It can even automaticly reduce post-processing if your CPU is getting overloaded. The noise filter adds a kind of a rasterising effect to the picture - might be useful in some cases. The alpha version also includes experimental playback for MPEG-1 and MPEG-2 files (such as VCD and SVCD movies), which works pretty damn well. Only problem is that MPEG-2 playback can't play the SVCD clips directly from the CD, but requires the video to be extracted to the HDD by using VCDGear first.

Major features

1. Various compression methods:
2. MPEG 4 compatible (Xvid, DivX 4, DivX 5) using libavcodec or XviD
3. Divx 3 compatible, MSMPEG4v2, MSMPEG4v1
4. WMV1/7, WMV2/8
5. H263, H263+, H264
6. HuffYUV in YV12 colorspace
7. MJPEG
8. MPEG 1
9. Theora (not for regular use, format isn't stabilized yet)
10. MPEG 2 by using mpeg2enc code from MJPEGtools project
11. All Windows Media Video 9 supported encoders with output to asf/wmv file or AVI
12. All common encoding modes: constant bitrate, fixed quantizer, fixed quality, two pass encoding (depends on compressor features)
13. For libavcodec and XviD detailed selection of motion estimation method
14. Minimum and maximum I frames interval
15. Minimum and maximum quantizer selection, quantizer type and trellis quantization selection for libavcodec
16. Adaptive quantization (aka. masking) for libavcodec and XviD, single coefficient elimination
17. Selectable compression of starting and ending credits
18. Two curve compression algorithms for second pass of two pass encoding  thanks to XviD developers
19. Second pass simulation: although not very precise, still helpful for tweaking advanced curve compression parameters
20. Ability to use libavcodec internal two pass code
21. Image preprocessing with ffdshow image filters (latest ffdshow version must be installed)
22. Graph during encoding: if your encoding program doesn't provide one
23. B frames support: from one to eight consecutive B frames
24. Support for MPEG 4 quarterpel and GMC
25. Selectable interlaced encoding
26. Decompression

Requirements

1. Only for CPUs with support for MMX (MultiMedia eXperience) instructions.
2. Only for CPUs with support for SSE (Streaming SIMD Extensions) instructions. Check if your CPU has support for SSE or SSE2 instructions using Cpu-Z, a small tool which shows infos about CPU.