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problem with CoreAudio Player and Sequencegrabber
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problem with CoreAudio Player and Sequencegrabber


  • Subject: problem with CoreAudio Player and Sequencegrabber
  • From: Andreas Känner <email@hidden>
  • Date: Thu, 13 Mar 2003 16:35:31 +0100

Hi,

I've written a simple C++ class which wraps CoreAudio to play sound from a given device through the default output unit. The audio device is a video and sound capture card. So, I want to use this class in conjunction with a quicktime sequencegrabber in a TV application. The sequencegrabber should display the video on screen and my wrapper should play the corresponding sound.
This works well in preview mode, but if I want to record a video with sound on disk, I have to stop my wrapper and I have to use the sequencegrabber and it's soundchannel to capture the sound data.
The problem is, that the sound in the resulting quicktime file sounds like a roboter voice. If I don't use my wrapper for preview before I don't get this effect.

It would be nice if anybody can point me in the right direction.


-- Andreas
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