x264 Encoder r1100

x264 is a free software library for encoding H.264/MPEG-4 AVC video streams. x264 is one of the most advanced publicly available AVC encoders. It is also the only publicly available High Profile AVC encoder.

It supports:
CABAC and CAVLCMultiple reference framesAll intra-predicted macroblock types (16x16, 8x8 and 4x4 -- 8x8 is part of AVC High Profile)All P-frame inter-predicted macroblock typesB-Inter-predicted macroblock types from 16x16 down to 8x8Rate Distortion OptimizationMultiple ratecontrol modes: Constant Quantizer, Single or Multipass ABR with the option of VBVScene cut detectionAdaptive B-frame placement, with the option of keeping B-frames as referencesLossless mode (High Profile)Custom quantization matrices (High Profile)