rubberband
Apply time-stretching and pitch-shifting with librubberband.
To enable compilation of this filter, you need to configure FFmpeg with
--enable-librubberband.
The filter accepts the following options:
- tempo
Set tempo scale factor.
- pitch
Set pitch scale factor.
- transients
Set transients detector. Possible values are:
- crisp
- mixed
- smooth
- detector
Set detector. Possible values are:
- compound
- percussive
- soft
- phase
Set phase. Possible values are:
- laminar
- independent
- window
Set processing window size. Possible values are:
- standard
- short
- long
- smoothing
Set smoothing. Possible values are:
- off
- on
- formant
Enable formant preservation when shift pitching. Possible values are:
- shifted
- preserved
- pitchq
Set pitch quality. Possible values are:
- quality
- speed
- consistency
- channels
Set channels. Possible values are:
- apart
- together