By Enhanced Podcast one understands a Podcast, which contains additional features, about chapter markers, over which determined sections can be started directly, or pictures and/or textual informations, which are faded in at certain times during playing except pure audio or video data. The term was coined/shaped in June 2004 by Apple, when these were for the first time introduced with iTunes 4,9. Technically it concerns thereby .m4a files, thus a MPEG-4 container, in which a AAC coded file is. The picture and textual informations are merged over additional Datenchannels defined in the MPEG4-Standard.
Although Enhanced Podcast originally means the format used by Apple, is conceivable that the term in the future also on alternative formats with similar functions expands.
With garage volume 3 from iLife 06 Suite Apple supplies for the first time an integrated Podcast Studio of which directly with chapter marker, left and in the "Enhanced" format exports pictures.
Enhanced Podcasts are supported for the moment only of iPod and iTunes. However the pure audio data without the extended functions can be played nevertheless on all devices, supported the AAC. That is with most computer programs the case, with hardware Playern however is mostly missing the AAC support. The XBox as well as some mobile phones play AAC behaviourless.
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