ref: 38c6a150926d83af381025523219dc441ee6f4c8
dir: /README/
This is a prototype codec and for now it has limited functionality. To build from a distribution tarball, you only need to do the following: % ./configure % make To build from the git repository, the following steps are necessary: 1) Clone the repository: % git clone git://git.opus-codec.org/opus.git % cd opus 1) Compiling % ./autogen.sh % ./configure % make Once you have compiled the codec, there will be a opus_demo executable in the top directory. Usage: opus_demo [-e] <application> <sampling rate (Hz)> <channels (1/2)> <bits per second> [options] <input> <output> opus_demo -d <sampling rate (Hz)> <channels (1/2)> [options] <input> <output> mode: voip | audio | restricted-lowdelay options: -e : only runs the encoder (output the bit-stream) -d : only runs the decoder (reads the bit-stream as input) -cbr : enable constant bitrate; default: variable bitrate -cvbr : enable constrained variable bitrate; default: unconstrained -bandwidth <NB|MB|WB|SWB|FB> : audio bandwidth (from narrowband to fullband); default: sampling rate -framesize <2.5|5|10|20|40|60> : frame size in ms; default: 20 -max_payload <bytes> : maximum payload size in bytes, default: 1024 -complexity <comp> : complexity, 0 (lowest) ... 10 (highest); default: 10 -inbandfec : enable SILK inband FEC -forcemono : force mono encoding, even for stereo input -dtx : enable SILK DTX -loss <perc> : simulate packet loss, in percent (0-100); default: 0 input and output are 16-bit PCM files (machine endian) or opus bitstreams with simple opus_demo propritary framing.