it's a video player, also works for music and pictures
Apodio - Gnu/linux Os for Artists & More
Video mixer for mixing live and recorded video and audio feeds
C++ library for image acquisition and visualization
Play your media files with this awesome .NET Media Player
A 3D Video Player with interactive viewpoint adaption.
A simple 3d compositor.
Software for motion tracking (skeletons, objects, hands) via Kinect!