Convert FLAC to OGG
Drop a FLAC and download an .ogg file carrying Opus audio at 128 kbps. The sample rate and channel count are preserved.
Feeding Opus from a lossless source is the right order of operations: the encoder makes one set of decisions against the full signal rather than working from another codec’s output.
Why 128 kbps goes further here
Opus reaches the quality MP3 needs about 192 kbps to deliver, so a library converted at 128 kbps is smaller than the MP3 equivalent while sounding at least as good. For speech-heavy material the margin is wider still.
Where the output plays
Browsers, Android, Discord, VLC, and most desktop players handle Opus in Ogg. Car head units, older phones, and standalone players frequently do not. Convert to MP3 instead when the destination is that kind of hardware.