# High Quality Opus

I made a script to convert the audio of a video into high quality
opus. It will be 512kbps 48kHz zero compression opus with hyper lo
w latency (frame duration 2.5ms). You can also use this to convert
audio files.

I know 512kbps might be placebo. But I also use this to convert FL
AC files. So I wanted to make them transparent within 5 sigma rang
e (99.99997%). Also I thought the file size does not hurt anyway.

Of course that doesn't mean it is only useful for FLAC files. I us
e this for youtube videos with 128kbps opus too. The sounds are am
azing.

I named it 'fo'. The usage is just `fo $files`.


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#!/usr/local/bin/rc

fn convert{
        ffmpeg -i file:$1 -c:v copy -c:a libopus -b:a 512k -ar 48000 -compression_level 0 -frame_duration 2.5 $2
}

for (i in $*) {
        result = `{echo file:$i | sed 's/\./_result\./'}

        convert $i $result
}
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