Command Crate Normalize loudness of FLAC file based on target settings (ffmpeg)
ffmpeg -i INPUT.flac -af loudnorm=I=${TARGET_INTEGRATED_LOUDNESS}:TP=${TARGET_TRUE_PEAK}:LRA=${TARGET_LOUDNESS_RANGE}:measured_I=${MEASURED_INPUT_INTEGRATED_LOUDNESS}:measured_TP=${MEASURED_INPUT_TRUE_PEAK}:measured_LRA=${MEASURED_INPUT_LOUDNESS_RANGE}:measured_thresh=${MEASURED_INPUT_THRESHOLD}:offset=${TARGET_NORMALIZATION_OFFSET}:linear=true OUTPUT.flacNormalizes the loudness of a .flac file to specified target values, using measured input loudness statistics to ensure consistent output volume.