Re: Which Audio Formats are supported directly by CoreAudio
Re: Which Audio Formats are supported directly by CoreAudio
- Subject: Re: Which Audio Formats are supported directly by CoreAudio
- From: James McCartney <email@hidden>
- Date: Thu, 22 Sep 2005 11:40:39 -0700
On Sep 21, 2005, at 1:09 PM, Marc Van Olmen wrote:
Interesting, the Audio File formats on 10.3.9 don't show the AAC,
'mp4f' = MPEG4 Audio (.mp4)
data_formats: 'aac '
'm4af' = MPEG4 Audio (.m4a)
Does this mean that these file types are not natively supported by
coreAudio. But in both cases (Tiger and Panther) coreAudio will use
the QuickTime component to do the decompression. Or is coreAudio
having it owns decompressor (I guess not) but just trying to be
certain....
just a data-format/data-container terminology quibble for
clarification: data formats are decompressed. file formats are
parsed. mp4f/m4af are file formats. file formats require
AudioFileComponent plugins (if they aren't built-in like AIFF, WAVE)
which is how mp4f/m4af are implemented. data formats require
AudioCodecs.
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