Apply volume ramp from funscript to mp3 file

Settings

Volume Mapping for position Volume at 0 Funscript threshold position Volume at funscript threshold Volume at 100
Value
Reset

1st select .mp3 file to be used as source

2nd, select .funscript file to be used for volume (after selecting mp3 above)

Note that page will freeze during processing, it is normal, since browser does not allow to pass the audio context with contents of mp3 file to a thread to process it in background