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: William Stewart <email@hidden>
- Date: Wed, 21 Sep 2005 14:52:49 -0700
On 21/09/2005, at 1:09 PM, Marc Van Olmen wrote:
Bill,
thx!
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.
On Panther yes. On Tiger we added support for these formats with
CoreAudio's AudioFile API
But in both cases (Tiger and Panther) coreAudio will use the
QuickTime component to do the decompression.
More correctly, QuickTime will use the CoreAudio component to do the
compression/decompression.
There is a difference between the file format (MP4 for instance) and
the data it can contain (AAC for instance).
Bill
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