unicap is a library to access different kinds of capture devices. Device drivers are loaded with a plugin system so that new drivers can be easily added. Currently, it has support for video-4-linux, video-4-linux-2, IIDC cameras, and video-to-firewire converters, and provides GTK widgets for live video display and access to device properties.
Eckbox is van Eck Phreaking tool that interprets a radio signal emanating from a computer's monitor to recreate the image (in black and white) that is displayed on it. It could be used as a valuable security tool for testing otherwise secure computers or for developing hardware and software to counter this type of remote shoulder-surfing. It is not intended to be used for illegal purposes, and includes information on the hardware required.
The main part of av_convert is a C++ API for accessing audio/video files (AVI, Quicktime, YUV4MPEG stream, WAV, etc.). This functionality is provided by a library and a set of plugin modules for I/O backends and audio/video codecs. Using this library, "av_convert" can convert between these file formats and provide basic editing functions, such as cutting parts of different video sources to one destination. The included program "av_rec" can record real-time video from a v4l-video-source with A/V sync.