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x264 Video Codec rev. 2334

x264 is a free library for encoding H.264/MPEG-4 AVC video streams.

To decode, we suggest you to use a recent build of FFDShow, DivX H.264 Decoder or a media player that supports H.264 internally - like MPlayer (there are few interesting frontends for Windows: MPlayerUI, MPlayer Frontend), VLC (VideoLAN Client), KMPlayer, etc.

• Important:

- VFW and installer were removed from auto update, VFW is outdated. However, you may try the x264Gui, x264 VfW, TX264 or Leiming's x264 GUI.
- Microsoft .NET Framework 2.0, AVISynth and DGIndex are required to use with MeGUI but NOT included.

Encoder features :

- CAVLC/CABAC
- Multi-references
- Intra: all macroblock types (16x16, 8x8, and 4x4 with all predictions)
- Inter P: all partitions (from 16x16 down to 4x4)
- Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
- Ratecontrol: constant quantizer, single or multipass ABR, optional VBV
- Scene cut detection
- Adaptive B-frame placement
- B-frames as references / arbitrary frame order
- 8x8 and 4x4 adaptive spatial transform
- Lossless mode
- Custom quantization matrices
- Parallel encoding of multiple slices

Advanced settings :

- Enabling Cabac: approximately 10% bitrate reduction without loss in quality, but is slow.
- Enabling De-blocking Filter: smooths out visible blocks during an encode (rather than by using post processing to smooth out blocks while decoding). Is a good idea to enable for low bitrate encodes.

x264 limitations :

- "x264 doesn't support the error-resilience features of baseline and extended profile, not the alternative colorspaces of high profile. Properly dealing with adaptive interlacing in all cases takes lots of code. x264 doesn't support interlacing.
There are a few other features not supported..."

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