doc/README.tech

   1 Technical notes:
   2 ---------------
   3
   4 - To increase speed, only motion vectors (0,0) are tested
   5
   6 - The decision intra/predicted macroblock is the algorithm suggested
   7   by the mpeg 1 specification.
   8
   9 - only Huffman based H263 is supported, mainly because of patent
  10   issues.
  11
  12 - Many options can be modified only in the source code.
  13
  14 - I rewrote the mpeg audio layer 2 compatible encoder from scratch. It
  15   is one of the simplest encoder you can imagine (800 lines of C code
  16   !). It is also one of the fastest because of its simplicity. They
  17   are still some problems of overflow. A minimal psycho acoustic model
  18   could be added. Only mono stream can be generated. I may add stereo
  19   if needed.
  20
  21 - I rewrote the AC3 audio encoder from scratch. It is fairly naive,
  22   but the result are quiet interesting at 64 kbit/s. It includes
  23   extensions for low sampling rates used in some Internet
  24   formats. Differential and coupled stereo is not handled. Stereo
  25   channels are simply handled as two mono channels.