Purpose
One of the purposes of multimedia container formats is to allow multiple codecs to be muxed into a single file or stream. For example, to combine audio, video, and subtitles into a single file.
The viewpoint held by Christopher Montgomery, creator of the Ogg format, is that the units of muxed codec data should be a separate abstraction layer from the units of data used by the codec in order to limit the amount of buffering necessary when decoding the contained data. In his opinion, which is supported by other developers working with the Xiph.org Foundation, this gives Ogg a technical advantage over alternative bitstream formats such as AVI, QuickTime, and MPEG.
Each Ogg page also provides the time offset of the contained data which allows efficient seeking which works with streaming and time accurate. In contrast, many other formats seek to byte positions in the stream or rely on a table of contents for seeking information.
Read more about this topic: Ogg Page
Famous quotes containing the word purpose:
“Happiness serves hardly any other purpose than to make unhappiness possible.”
—Marcel Proust (1871–1922)
“Most Americans are born drunk, and really require a little wine or beer to sober them. They have a sort of permanent intoxication from within, a sort of invisible champagne.... Americans do not need to drink to inspire them to do anything, though they do sometimes, I think, need a little for the deeper and more delicate purpose of teaching them how to do nothing.”
—Gilbert Keith Chesterton (1874–1936)
“What if we fail to stop the erosion of cities by automobiles?... In that case America will hardly need to ponder a mystery that has troubled men for millennia: What is the purpose of life? For us, the answer will be clear, established and for all practical purposes indisputable: The purpose of life is to produce and consume automobiles.”
—Jane Jacobs (b. 1916)