"It allows to copy DVDs without menus using dvdauthor,
which, as the name suggests, is a tool that helps you create menus,
buttons and chapters. K9Copy supports various video and audio
codecs, including Xvid, x264, WMV 7 and 8, RealVideo, MP3, AC3 or
AAC. It can be set to use either mencoder or ffmpeg for MPEG-4
encoding, allows 2-pass encoding (which is slower but performs an
improved, constant quality encoding), and it also allows you to
select the size and number of output video files.
"...One of the nice things about K9Copy is that it also provides
the option to extract only the audio, which can prove very useful
for a concert/videos DVD for example."