x264 is a free library for encoding H264/AVC video streams. The code is written by Laurent Aimar, Eric Petit(OS X), Min Chen (vfw/nasm), Justin Clay(vfw), M�ns Rullg�rd and Loren Merritt from scratch. It is released under the terms of the GPL license.
WARNING: x264 is still in early development stage
The latest x264 source code can always be found by anonymous Git repository:
git clone git://git.videolan.org/x264.git
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Here are some key features of "x264":
· 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 on multiple CPUs
· Interlacing
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