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Re: Using the new MovieAudioExtractionFillBuffer() on a MIDI file
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Re: Using the new MovieAudioExtractionFillBuffer() on a MIDI file


  • Subject: Re: Using the new MovieAudioExtractionFillBuffer() on a MIDI file
  • From: Greg Chapman <email@hidden>
  • Date: Thu, 13 Oct 2005 15:14:25 -0700

In the current release of QuickTime, MovieAudioExtraction only works for audio data (ie. not MIDI data). (It is only supported by "Sound" tracks.)

If you synthesize audio data from your MIDI data first (eg. convert to AIFF), then yes, it will work. One way to do that is with ConvertMovieToFile, which would be convenient for you, since you already have a Movie. You then open that AIFF file the same way you opened the MIDI file, and MovieAudioExtraction will work on _that_ Movie.

Greg

On Oct 13, 2005, at 2:28 PM, David M. Cotter wrote:

does it work for you? i think it's reasonable to expect it to work. is it true I have to use some OLD API to convert it to an AIFF first??

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 >Using the new MovieAudioExtractionFillBuffer() on a MIDI file (From: "David M. Cotter" <email@hidden>)

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