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ffmpeg -i file.wav -ab 320k newfile.opus
I don't know how to decide the value to set for the -ab option. But my overall goal is to convert wav file to opus file with high quality, and delete the wav files to save disk space. How to determine what bit rate is high enough and still "relevant"?
You have some recommendations here :
https://wiki.xiph.org/Opus_Recommended_Settings
For 2 channels, Opus at 128 KB/s (VBR) is pretty much transparent.
High enough may be subjective…
