Opusrug - encoder based on Opus 1.3.1-64. 2020-09-09 09:35:39 https://github.com/fabiorug/OpusrugLink to Opusrug, it's a common OPUS encoder, no extra options, only some settings changed (celt file in the link). It's the one in the folder "opus 1.3.1 - 64 dirty by me" (.exe file for Windows), I didn't compile myself, and I didn't check if it has AVX2, feel free to check it.Opusrug uses lowest possible bitrate while having highest sound quality, good for high quality melodic music. I don't guarantee high quality, you should use for music at least 64 kbps (though it's optimized for 56-80 kbps), good flac from a complete master, not singles if you want max quality. DON'T expect M4A or Shazam audio quality as it has few psychoacoustics I edited only bass and bandwidth allocation.I edited the celtencoder.c in a Linux virtual machine executing opusdemo without listening to the track. And I tested mostly with house and music from South Italy.For compressing speech there are good encoders like Exhale or Gxlame that are more tested.