Cook Codec: Difference between revisions
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The ''' | The '''Cook codec''' is a [[Lossy data compression|lossy]] [[Audio data compression|audio compression]] [[codec]] developed by [[RealNetworks]]. It is also known as Cooker, Gecko, RealAudio G2, and RealAudio 8 low bitrate (RA8LBR). | ||
Introduced in 1998, the cook codec was the first audio codec developed by RealNetworks in-house, and was named after its author, Ken Cooke. It is a pure transform codec based on the [[modified discrete cosine transform]] with a single block size. | Introduced in 1998, the cook codec was the first audio codec developed by RealNetworks in-house, and was named after its author, Ken Cooke. It is a pure transform codec based on the [[modified discrete cosine transform]] with a single block size. | ||
In 2003, RealNetworks introduced a [[surround sound]] version of cook, called RealAudio Multichannel. | In 2003, RealNetworks introduced a [[surround sound]] version of cook, called RealAudio Multichannel. This was initially designated by the four-character code 'whrl', but is now identified as 'cook', as mono/stereo files are. | ||
Although RealNetworks never published a technical description of the cook codec, others have [[Reverse engineering|reverse engineered]] the format, and as of December 2005, [[FFmpeg]] [[libavcodec]] contains a decoder capable of playing cook-encoded files. As of July 2009, [[Rockbox]] is capable of playing cook-encoded files as well. | Although RealNetworks never published a technical description of the cook codec, others have [[Reverse engineering|reverse engineered]] the format, and as of December 2005, [[FFmpeg]] [[libavcodec]] contains a decoder capable of playing cook-encoded files. As of July 2009, [[Rockbox]] is capable of playing cook-encoded files as well. | ||
Latest revision as of 16:45, 2 May 2026
The Cook codec is a lossy audio compression codec developed by RealNetworks. It is also known as Cooker, Gecko, RealAudio G2, and RealAudio 8 low bitrate (RA8LBR).
Introduced in 1998, the cook codec was the first audio codec developed by RealNetworks in-house, and was named after its author, Ken Cooke. It is a pure transform codec based on the modified discrete cosine transform with a single block size.
In 2003, RealNetworks introduced a surround sound version of cook, called RealAudio Multichannel. This was initially designated by the four-character code 'whrl', but is now identified as 'cook', as mono/stereo files are.
Although RealNetworks never published a technical description of the cook codec, others have reverse engineered the format, and as of December 2005, FFmpeg libavcodec contains a decoder capable of playing cook-encoded files. As of July 2009, Rockbox is capable of playing cook-encoded files as well.
See also
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