+.IP "\-\-extract\-audio" 4
+.IX Item "--extract-audio"
+Create an audio-only file extracted from the video downloaded. Requires that
+ffmpeg and ffprobe be installed.
+.IP "\-\-audio\-format=\fB\s-1FORMAT\s0\fR" 4
+.IX Item "--audio-format=FORMAT"
+Set the audio format to be used for the extraction. Possible values are
+\&\fIbest\fR, \fIaac\fR, \fImp3\fR, with \fIbest\fR being the default.