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Re: audio associated with video Ryan Walklin Wed Dec 09 02:00:34 2009

The example you linked relies heavily on the old carbon QuickTime APIs. Do you 
know if there's any QTKit equivalent? 

Regards,

Ryan

On 9/12/2009, at 1:16 PM, Jean-Daniel Dupas wrote:

> 
> Le 9 déc. 2009 à 00:43, paul hill a écrit :
> 
>> Hi all
>> 
>> Does anyone know how to get hold of the audio samples of video on the fly. 
> 
> Is audio context insert what you're looking for ? 
> 
> http://developer.apple.com/mac/library/samplecode/QTAudioContextInsert/
> 
> 
>> It seems easy enough to strip out the audio file once the whole video has 
>> been loaded.  However, I would like to get a reference to the audio data as 
>> it is played out so I can manipulate it.  Also once extracted, would it be 
>> possible to play it using core audio separately from quicktime.  I can't 
>> seem to find any example code for any of this.
> 
> If you want to extract it and play it separately, you should use the 
> QuickTime audio extraction API to retrieve audio data, and use an Audio Queue 
> to play it.
> 
> 
> -- Jean-Daniel
> 
> 
> 
> 
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