x264 is a free library for encoding H264/AVC video streams. The code is written from scratch by Laurent Aimar, Loren Merritt, Eric Petit(OS X), Min Chen (vfw/asm), Justin Clay(vfw), M'ns Rullg'rd, Christian Heine (asm), and Alex Izvorski (asm).

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: optional VBV, single or multipass ABR, constant quantizer
• 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

Note: x264 is still in early development stage.

Download x264 Video Codec r655

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