Codecs for playing non-free formats are not included in Kubuntu by default. You can get support for the extra codecs by installing the libxine-extracodecs package.
이러한 꾸러미 중 몇몇은 어떤 지역에서는 허가되지 않은 것일 수도 있습니다: 설치하기 전에 사용해도 되는 지 알아보십시오.
Due to patent and copyright restrictions, some codecs are not included at all in Kubuntu. For more information on these, go to https://help.ubuntu.com/community/RestrictedFormats.