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.
VACUM is framework for video analysis and comparison. It provides flexible input handling, an image processing library, and tools for objective and visual measurement of the video quality. It includes a video player that can play multiple video files side-by-side, compare video frames and generate "visual diff", display PSNR values, and single step through the frames.
Freepia is small GNU/Linux distribution designed to run on VIA EPIA-M mainboards. It currently only runs on the M-9000 and M-10000 (ezra and nehemia cpu) but with some modifications like kernel and X11 modules it should run on others too. The main goal of this project is to build a full-featured, low-noise media box to play movies, MP3s, images, etc. It uses freevo as its media viewer, but in the future there may be support for others, like mythtv or vdr.
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.
Avifile is a library that allows you to read and write compressed AVI files in most common video & audio formats (Indeo® Video, DivX, etc.) under x86 Linux. Compression and decompression are performed with Win32 DLLs. It includes a simple AVI player and a Video4Linux capture program. Currently it is under heavy development, and while some features (such as AVI playback) already work, some (audio compression) are not yet successfully implemented.