Re: Problem with AAC and AudioFile
Re: Problem with AAC and AudioFile
- Subject: Re: Problem with AAC and AudioFile
- From: William Stewart <email@hidden>
- Date: Wed, 21 Jan 2004 11:35:37 -0800
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
On 17/01/2004, at 8:33 PM, john wrote:
Hello,
To repeat Jay's question since it was unanswered, I tried using
AudioFileOpen() to open an .m4a file from iTunes and an .mp4 file from
Quicktime and got the kAudioFileUnsupportedFileTypeError.
What type of AAC file does AudioFile support, exactly? Only its own?
-- John
What is the AudioStreamBasicDescription look like for AAC? I get the
following error (with the following code) while trying to get info on
an
AAC file converted from an mp3 using iTunes. Is this an issue with
support via the converter API's but not the file API's? Ultimately, I
want to write a sound recorder that writes compressed files.
Jay Ridgeway
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