Compressing my audio library

After a few years of collecting music on various platforms, mostly Bandcamp, my music libraries have grown to some degree. My remote music library (sitting behind a Navidrome instance) is about 100Gb; the local one being roughly the same size. The majority are stored in lossless formats like FLAC or WAV with other formats in the mix, which brings the size up quite a bit. While talking to a friend, the Opus recommended settings page was mentioned and I started toying around with ffmpeg to see how low I could get. To give some numbers, I started with a bitrate of 128k which brought down the size quite a lot already. Let’s do a first test using the Lost Eden Soundtrack, which scores at 2.2Gb in the WAV format. After running the conversion, we are now at 67Mb, a reduction of around 188%. jae@thetys  ~/music-convert  du -sh * 2.2G in 67M outZsh However, 128k is the music storage recommendation, what if we went with the streaming recommended of 96k? This time the difference doesn’t seems…