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Re: Writing AAC, MP3, or other compressed audio files
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Re: Writing AAC, MP3, or other compressed audio files


  • Subject: Re: Writing AAC, MP3, or other compressed audio files
  • From: john <email@hidden>
  • Date: Thu, 4 Mar 2004 18:55:35 -0500

Hi Corwin,

As far as AAC, AudioFile and AudioConverter support the format, however the AudioFile API apparently supports only the ADTS file format which isn't what users would typically expect (mp4).

An easy way to support mp4 is to use the QuickTime APIs. Check out the ConvertMovieSndTrack and qtmoviefromprocs sample code from Apple's website for this.

A harder way to support mp4 would be to convert the audio to AAC using the AudioConverter and then write your own mp4 file.

-- John


Hi-

I'm a little new to this, so please forgive me if I'm asking a really silly question.

I have some simple uncompressed sound data which I'd like to write to AAC. I can find API for converting frames, which is cool, but I can't find API to actually write a header and make it a valid file. Is there any sample code that shows me how to convert sound data to a compressed format and then write out a compressed file with representing that data?

Thanks!

Corwin
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References: 
 >Writing AAC, MP3, or other compressed audio files (From: Corwin Light-Williams <email@hidden>)

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