Description for x264 Video Codec r1183
The code is written from scratch by Laurent Aimar, Loren Merritt, Eric Petit (OS X), Min Chen (vfw/asm), Justin Clay (vfw), Mans Rullgard, Radek Czyz, Christian Heine (asm), Alex Izvorski, Alex Wright and Jason Garrett-Glaser.
- 8x8 and 4x4 adaptive spatial transform
- Adaptive B-frame placement
- B-frames as references / arbitrary frame order
- CAVLC/CABAC entropy coding
- Custom quantization matrices
- Intra: all macroblock types (16x16, 8x8, 4x4, and PCM with all predictions)
- Inter P: all partitions (from 16x16 down to 4x4)
- Inter B: partitions from 16x16 down to 8x8 (including skip/direct)
- Interlacing (MBAFF)
- Multiple reference frames
- Ratecontrol: constant quantizer, constant quality, single or multipass ABR, optional VBV
- Scenecut detection
- Spatial and temporal direct mode in B-frames, adaptive mode selection
- Parallel encoding on multiple CPUs
- Predictive lossless mode
- Psy optimizations for detail retention (adaptive quantization, psy-RD, psy-trellis)
- Zones for arbitrarily adjusting bitrate distribution
What's new in x264 Video Codec r1183:
- Cacheline-split SSSE3 chroma MC
- ~70% faster chroma MC on 32-bit Conroe
- Also slightly faster SSSE3 intra_sad_8x8c
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