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authorFabrice Bellard <fabrice@bellard.org>2001-07-19 20:46:37 +0000
committerFabrice Bellard <fabrice@bellard.org>2001-07-19 20:46:37 +0000
commit1b58d58ddaf8a8c766a0353885ff504babed0453 (patch)
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parent3089828607baa0511f0873f54372aedd62608e53 (diff)
downloadffmpeg-1b58d58ddaf8a8c766a0353885ff504babed0453.tar.gz
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-Technical notes:
----------------
-
-- To increase speed, only motion vectors (0,0) are tested
-
-- The decision intra/predicted macroblock is the algorithm suggested
- by the mpeg 1 specification.
-
-- only Huffman based H263 is supported, mainly because of patent
- issues.
-
-- Many options can be modified only in the source code.
-
-- I rewrote the mpeg audio layer 2 compatible encoder from scratch. It
- is one of the simplest encoder you can imagine (800 lines of C code
- !). It is also one of the fastest because of its simplicity. They
- are still some problems of overflow. A minimal psycho acoustic model
- could be added. Only mono stream can be generated. I may add stereo
- if needed.
-
-- I rewrote the AC3 audio encoder from scratch. It is fairly naive,
- but the result are quiet interesting at 64 kbit/s. It includes
- extensions for low sampling rates used in some Internet
- formats. Differential and coupled stereo is not handled. Stereo
- channels are simply handled as two mono channels.