RealAudio cook: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
(Cook is now complete.) |
||
Line 3: | Line 3: | ||
* Samples: http://samples.mplayerhq.hu/real/AC-cook/ | * Samples: http://samples.mplayerhq.hu/real/AC-cook/ | ||
RealAudio cook (a.k.a. Cooker a.k.a. gecko) is an audio codec created by [[Real]]. It features different coding modes | RealAudio cook (a.k.a. Cooker a.k.a. gecko) is an audio codec created by [[Real]]. It features different coding modes. | ||
Cook Flavors | Cook Flavors | ||
Line 54: | Line 54: | ||
[[Category:Audio Codecs]] | [[Category:Audio Codecs]] | ||
[[Category: MDCT Audio Codecs]] | [[Category: MDCT Audio Codecs]] | ||
[[Category: Multichannel Audio Codecs]] | [[Category: Multichannel Audio Codecs]] |
Revision as of 03:53, 25 April 2009
- FourCC: cook
- Company: Real
- Samples: http://samples.mplayerhq.hu/real/AC-cook/
RealAudio cook (a.k.a. Cooker a.k.a. gecko) is an audio codec created by Real. It features different coding modes.
Cook Flavors
00 8 Kbps Music - RealAudio 01 11 Kbps Music - RealAudio 02 16 Kbps Music - RealAudio 03 20 Kbps Music - RealAudio 04 32 Kbps Music - RealAudio 05 44 Kbps Music - RealAudio 06 64 Kbps Music - RealAudio 07 32 Kbps - RealAudio 08 6 Kbps Music - RealAudio 09 20 Kbps Stereo Music 10 32 Kbps Stereo Music 11 44 Kbps Stereo Music 12 64 Kbps Stereo Music 13 96 Kbps Stereo Music 14 64 Kbps - RealAudio 15 20 Kbps Music High Response - RealAudio 16 32 Kbps Music High Response - RealAudio 17 16 Kbps Stereo Music - RealAudio 18 20 Kbps Stereo Music - RealAudio 19 20 Kbps Stereo Music High Response - RealAudio 20 32 Kbps Stereo Music - RealAudio 21 32 Kbps Stereo Music High Response - RealAudio 22 44 Kbps Stereo Music - RealAudio 23 44 Kbps Stereo Music High Response - RealAudio 24 64 Kbps Stereo Music - RealAudio 25 96 Kbps Stereo Music - RealAudio 26 12 Kbps Stereo Music - RealAudio 27 64 kbps Stereo Surround - RealAudio 28 96 kbps Stereo Surround - RealAudio 29 44 kbps Stereo Surround - RealAudio 30 96 Kbps 5.1 Multichannel - RealAudio 10 31 132 Kbps 5.1 Multichannel - RealAudio 10 32 184 Kbps 5.1 Multichannel - RealAudio 10 33 268 Kbps 5.1 Multichannel - RealAudio 10
Type Specific Data
Cook data is encapsulated in RealMedia files which transport type specific data needed by different codecs. Cook requires 8 bytes of type specific data for monophonic audio and 16 bytes for stereo data. Multi-byte numbers are big-endian:
mono and stereo data:
bytes 0-3 Cook version bytes 4-5 samples per frame per channel bytes 6-7 number of subbands used in the frequency domain
stereo data requires 8 more bytes:
bytes 8-11 unused bytes 12-13 joint stereo subband start bytes 14-15 joint stereo VLC bits