Watch the 알리바바 성공전략 다큐kbs video before converting or downloading, you can preview it by clicking Watch Video button, Download MP3 button will convert to mp3 and Download MP4 button will convert to mp4; SavefromNets.com allows you to download any videos from the supported website into MP3, MP4, and more format.
Somtimes we need to block some keywords due to copyright issue, so can try these new youtube downloader also, you can try this clips converter to download videos.