In Kubuntu you can use Dragon Player to play both video and audio files. To play video files:
Procedure 1. Ava failihaldurist failid
Ava Dolphin failihaldur.
Navigate to the video file.
Click on the file name to open it with the default video player (Dragon Player).
Procedure 2. Open Files From Within Dragon Player
Open Dragon Player; → → →
Kliki Faili mängimise nuppu või vajuta Ctrl+O
Navigate to the selected video file, and click Open