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Re: How to configure AudioConverter to write VBR?
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Re: How to configure AudioConverter to write VBR?


  • Subject: Re: How to configure AudioConverter to write VBR?
  • From: Jens Alfke <email@hidden>
  • Date: Sun, 8 Feb 2009 16:19:37 -0800


On Feb 8, 2009, at 4:05 PM, Stephen Davis wrote:

There is also the kAudioCodecPropertySoundQualityForVBR which you should set instead of kAudioConverterCodecQuality when using kAudioCodecBitRateControlMode_Variable. That's a little confusing but the docs do talk about it.

Thanks for the info! Currently I'm setting both properties: first the CodecQuality and then the SoundQualityForVBR [when VBR is on]. Is there any harm to setting both?


Also, you need to set the target bit rate via kAudioCodecPropertyCurrentTargetBitRate which I assume you are already doing.

Actually I'm setting kAudioConverterEncodeBitRate. Does that implicitly set CurrentTargetBitRate?


—Jens

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 >Re: How to configure AudioConverter to write VBR? (From: Stephen Davis <email@hidden>)

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