codec features (11.2008)
implemented
- grayscale encoding (Y8)
- I (key) and P (predicted) frames
- DCT spatial transform for 8x8 pixel blocks
- motion vectors for 16x16 pixel macroblocks
- integer-pel motion estimation, testing several predicted motion vectors
- sub-pixel motion vector refinement
- adaptive I/P frame decision with adjustable max. keyframe interval
- three macroblock types for P frames: intra, inter and direct