LiVES is a simple to use yet powerful video effects, editing, conversion, and playback system aimed at the digital video artist and VJ. It runs under Linux, BSD, Mac OS X/Darwin, IRIX, and openMosix. It is frame and sample accurate, can handle almost all types of video, and is fully extendable through plugins and the included plugin builder tool. It can also be controlled remotely using OSC.
Based on the sources of Quicktime4Linux, OpenQuicktime has since been extensively remodeled and streamlined. The build system is based on Automake/libtool and builds on most varieties of Unix. The codecs are all external from the main library. Included is a player, encoder, audio and video extractors, and a number of other utilities.
The Helix DNA Client is the media playback engine used by the RealOne Player. It contains standards-compliant H.263 and MP3 decoders, RealAudio and RealVideo binaries, and sample user interfaces. The media engine is capable of playing multiple streams simultaneously, maintaining synchronization between streams, and handling RTSP, RTP, and HTTP streaming network playback.
XdTV is a program to watch, record, and stream TV. It interacts with AleVT (Teletext) and Nxtvepg (NextView) and supports the bttv, bktr, and dvb APIs. It contains some deinterlacing filters and records video files with various containers (AVI, MPEG, Ogg, etc.) and many codecs: FFMpeg >=0.4.6, XviD 0.9 and 1.x, DivX 4 and 5, and Vorbis/Theora >=1.0a5. It has some plugin capabilities.
YanC (Yet another nV Configurator) is a small tool which you can use to change the nVidia and ATI-specific settings (almost) as easily as with the Windows drivers. You can edit the settings for AGP support, the Cursor Shadow, the nVidia logo, Digital Vibrance Control, and, of course, TwinView for the nVidia drivers. For the ATI drivers, it offers support for the overlay settings, anti-aliasing, and dual monitor configuration.
Getcontrol is a GNOME 2 multimedia frontend. It aims to play DivX, DVD, MP3, Ogg, and Shoutcast streams,and also provide digital photo viewing, video conferencing, etc., all connected with your remote control and running on your TV out. It relies on Gstreamer for multimedia playback.