VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols.
It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.
It doesn't need any external codec or program to work.
VLC Media Player — Медиаплеер с возможностью использования в качестве сервера для передачи потокового видео по локальной сети — VLC (VideoLAN) может транслировать файлы с жесткого диска, DVD-плеера или выхода видеокарты. Поддерживается работа с большинством видеоформатов, включая DVD, VCD, MPEG, DivX и потоковые (Nullsoft Streaming Video (.nsv) и Real Media (.rm)). Есть возможность использовать программу как обыкновенный медиаплеер.

The VideoLAN project is pleased to announce the release of the first version of the Goldeneye branch of VLC: 1.0.0.
This major release introduces many new features, new formats and new codecs to the VLC multimedia framework and fixes a very high number of bugs that were present in the 0.9.x or 0.8.6 versions.

VLC 1.0.0 Features (2009-07-07)

* Free, Open Source and cross-platform
* Independant of systems codecs to support most video types
* Live recording
* Instant pausing and Frame-by-Frame support
* Finer speed controls
* New HD codecs (AES3, Dolby Digital Plus, TrueHD, Blu-Ray Linear PCM, Real Video 3.0 and 4.0, ...)
* New formats (Raw Dirac, M2TS, ...) and major improvements in many formats...
* New Dirac encoder and MP3 fixed-point encoder
* Video scaling in fullscreen
* RTSP Trickplay support
* Zipped file playback
* Customizable toolbars
* Easier encoding GUI in Qt interface
* Better integration in Gtk environments
* MTP devices on linux
* AirTunes streaming
* New skin for the skins2 interface