Ogg Media

Ogg Media (OGM), meaning Ogg Media File, is a container format (for video, audio and subtitle streams). It was developed by Tobias Waldvogel and can do a few things the common AVI format cannot. OGM's features include in particular:
* Chapter support
* Vorbis audio support (there is no standard way for AVI to support Vorbis, making any attempt unreliable and potentially incompatible with players)
OGM support for Windows (including Microsoft's Windows Media Player) is available via Waldvogel's own OggDS, Haali Media Splitter, ALLPlayer, MPlayer, VLC, or RadLight's Ogg Media filters (the last of which can also decode Theora video). On Unix-based systems OGM support is available in MPlayer, xine, VLC, and any player utilizing the GStreamer framework (such as Totem or Kaffeine).
Fundamentally, the format is a hack of the Ogg container format. In 2004 it was viewed by many as a temporary solution, to be phased out when other media container formats (for example, Matroska) matured and come to support the same services.
Originally, a major drawback of OGM was that it was not free or open-source software, even though it was based on the free and open-source Ogg framework. The reason was that Waldvogel was embarrassed about the quick-dirty-hack quality of his code, wanting to improve it before releasing it to the keen eyes of the Xiph.org people . Waldvogel officially joined the Xiph.org team since, and has donated all the code of his DirectShow filters — including format manipulation and playback — to their BSD-style free software licensed repository. It is available, though without documentation, in the "oggds" module of the repository. Another implementation is available in Moritz Bunkus' ogmtools package.
OGM files most often carry video encoded in the MPEG-4 ASP format and audio in Vorbis or AC-3 (Dolby Digital).
Software encoding in OGM
Linux / BSD
* Avidemux
* HandBrake
*
* OGMRip
Mac OS X
* HandBrake
Windows
* DVDtoOGM
* OGGMux
* VirtualDubMod
* HandBrake

Main Menu

See Also

Main Menu