KMediagrab is a media grabber and encoder built on top of mplayer/mencoder. It can grab and encode a DVD at the same time (e.g., creating a divx or a videocd file for instance), record a movie or your favourite TV program from your TV-card, or translate a video file from one format to another (e.g., create a realplayer file from a .wmv one).
KScannerButtons is a daemon plus an optional KDE frontend for monitoring your scanner buttons so that actions can be taken in response to button presses. It's composed of a daemon (sanebuttond), a frontend that will display an icon in the systray, and a dialog box to configure and launch the daemon. It is based on the button monitoring capabilities found in some SANE backends. It has been tested with the avision backend and an HP 5300C scanner. The frontend requires Kommander (kde-webdev).
Kalva is a KDE video recorder that is simple to use and easy to setup. You can use it to schedule a single movie recording by choosing the date from a calendar. A serial recording may be scheduled by choosing the days of the week. You can store recording options in various profiles for different hardware and quality levels. Kalva can import channellists from programs like xawtv or xawtv4, and can generate a new one using scantv.
Klear is a KDE-based TV viewer for DVB. It includes internal tuners for DVB-S, -T, and -C. It is also able to record video streams in live- and scheduled-mode as MPEG TS and MPEG PS. It shows OSD information, takes snapshots, deinterlaces the video stream, and more. You can even watch the stream timeshifted and save the video afterwards. Klear also includes a feature-rich EPG and teletext-system and has multilanguage support.