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Re: Problem with AAC and AudioFile
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Re: Problem with AAC and AudioFile


  • Subject: Re: Problem with AAC and AudioFile
  • From: john <email@hidden>
  • Date: Wed, 21 Jan 2004 17:17:25 -0500

Hi Bill,

Thanks for the reply! I don't really understand how AAC exists in mpeg2 and mpeg4, since I thought AAC was mpeg4 based, not that it matters any since I really know nothing.

What I'd really like to know is the details in filling out the AudioStreamBasicDescription for the AudioConverter AAC type...

Thanks!

-- John


The AudioFile API supports the ADTS file - this is an MPEG2 defined bit stream, but it is not MPEG-4.

QT can make mp4 files, and the iTune's m4a files are essentially MPEG-4 files that have just audio data in them.

At this stage there's no direct bridge between these two bit streams, but this will be addressed at some point

Bill
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References: 
 >Re: mp3 recording (From: "Jay Ridgeway" <email@hidden>)
 >Problem with AAC and AudioFile (From: john <email@hidden>)
 >Re: Problem with AAC and AudioFile (From: William Stewart <email@hidden>)

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