The Ogg format multiplexes independent audio, video, text, and metadata streams. Theora provides a lossy video layer. Vorbis or Opus commonly provide the audio layer. The Ogg logical bitstream ID identifies pages belonging to a bitstream. In a typical file, one stream is audio and the other video.
OGG stores compressed audio data. It includes artist and track metadata. Ogg is a free, open container format maintained by Xiph.Org. Originally called Squish, it was renamed OggSquish then OGG in 2000 when Vorbis reference was separated. OGM added formal video support in 2002.
OGG files store compressed audio data and metadata like artist information. “Vorbis” refers to the encoding by OGG’s developers Xiph.org. Non-Vorbis OGG files use compression like FLAC and Speex, and use the .OGA extension.
OGG containers multiplex audio, video, text, and metadata streams. Compression provides medium to high quality. Parts are discarded to reduce size. OGG containers plan to add speech. Media players and devices play OGG files due to the open format.
OGG Vorbis compressed audio file stored with the .ogg extension. Popular programs are VLC media player, Sound Studio and Musique.
OGG containers multiplex independent streams. Vorbis compressed audio has the OggS signature. Segments have a 27 byte header storing information like flags and checksums. Header bit 2 set or a TotalSegments field of zero indicates the file end. Segment sizes follow the header.
Vorbis is a free lossy audio format to replace MP3. It was developed without patents. It adapts for decades of use. Vorbis embeds in Ogg containers with metadata in the Vorbis comment scheme. It supports up to 255 channels.
OGG uses Vorbis compression for smaller file sizes but good quality. OGG metadata can store information like title and genre. It supports surround sound.
Variable Vorbis codes compress audio for smaller high quality files. It was created as an open, patent-free MP3 alternative. Online players or installed programs open OGG files.
OGG Vorbis replaces OGG to hold video, text, subtitles and audio streams. Its small size maintains quality even better than MP3. Let’s get into the OGG file format details.