Ogg Writ
Encyclopedia
Ogg Writ is a text-phrase codec used with the Ogg
encapsulation format.
It was initially designed to provide subtitles
for Ogg Theora
videos, but is also useful for song lyrics with Ogg FLAC
or Vorbis
, transcripts
with Ogg Speex
, or any other place where it is useful to combine text with audio or video.
Unlike most subtitle
formats which are in separate files from the audio/video content, Ogg Writ is mixed with audio/video streams so that it can be delivered as one file.
Its design makes it easy to extend with new features. It currently supports multiple languages and specific placement of the text in one or more windows.
As of early 2008, it is not being maintained anymore. It is semi-usable, but its use is cautioned.
Two other possible replacement codecs for timed text in Ogg are CMML and Kate.
Kate is quickly turning into the standard text encoding format for Ogg with support for srt and other time-aligned text formats.
Ogg
Ogg is a free, open container format maintained by the Xiph.Org Foundation. The creators of the Ogg format state that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high quality digital multimedia.The Ogg container format can multiplex...
encapsulation format.
It was initially designed to provide subtitles
Subtitle (captioning)
Subtitles are textual versions of the dialog in films and television programs, usually displayed at the bottom of the screen. They can either be a form of written translation of a dialog in a foreign language, or a written rendering of the dialog in the same language, with or without added...
for Ogg Theora
Theora
Theora is a free lossy video compression format. It is developed by the Xiph.Org Foundation and distributed without licensing fees alongside their other free and open media projects, including the Vorbis audio format and the Ogg container....
videos, but is also useful for song lyrics with Ogg FLAC
FLAC
FLAC is a codec which allows digital audio to be losslessly compressed such that file size is reduced without any information being lost...
or Vorbis
Vorbis
Vorbis is a free software / open source project headed by the Xiph.Org Foundation . The project produces an audio format specification and software implementation for lossy audio compression...
, transcripts
Transcription (linguistics)
Transcription in the linguistic sense is the systematic representation of language in written form. The source can either be utterances or preexisting text in another writing system, although some linguists only consider the former as transcription.Transcription should not be confused with...
with Ogg Speex
Speex
Speex is a patent-free audio compression format designed for speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD...
, or any other place where it is useful to combine text with audio or video.
Unlike most subtitle
Subtitle (captioning)
Subtitles are textual versions of the dialog in films and television programs, usually displayed at the bottom of the screen. They can either be a form of written translation of a dialog in a foreign language, or a written rendering of the dialog in the same language, with or without added...
formats which are in separate files from the audio/video content, Ogg Writ is mixed with audio/video streams so that it can be delivered as one file.
Its design makes it easy to extend with new features. It currently supports multiple languages and specific placement of the text in one or more windows.
As of early 2008, it is not being maintained anymore. It is semi-usable, but its use is cautioned.
Two other possible replacement codecs for timed text in Ogg are CMML and Kate.
Kate is quickly turning into the standard text encoding format for Ogg with support for srt and other time-aligned text formats.