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Re: AC-3 decode in Leopard+
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Re: AC-3 decode in Leopard+


  • Subject: Re: AC-3 decode in Leopard+
  • From: Hugo <email@hidden>
  • Date: Thu, 27 Jan 2011 09:47:14 -0800

I don't think that is completely correct. Mac OS X is able to decode ac3 streams, this is what happens when you play a DVD using the DVD Player app. However, I don't believe that this functionality is exposed to third party applications.

cheers,
Hugo

On Mon, Jan 24, 2011 at 5:38 AM, Stéphane Beauchemin <email@hidden> wrote:

From what I understand, core audio cannot decode ac3 stream. It can pass the raw ac3 stream to the hardware thought the optical out of your machine (so other devices can decode it like an audio video receiver).  When you implement an ac3 decoder you have to pay royalty to dolby, which apple choose not to do. I am no lawyer, but this is my understanding of it.

 

Maybe you should look into liba52 J Good luck

 

 


From: coreaudio-api-bounces+sbeauchemin=audiokinetic.com@lists.apple.com [mailto:coreaudio-api-bounces+sbeauchemin=audiokinetic.com@lists.apple.com] On Behalf Of David Zhao
Sent: January-17-11 8:41 PM
To: email@hidden
Subject: AC-3 decode in Leopard+

 

Hello,

 

Does Core Audio allow me to decode AC-3 encoded data in Leopard? I found this page which describes the audio formats supported. It seems to indicate that it supports ac3 in Leopard or above, but also mentions that it could not (by default) decode AC-3 audio to PCM in Tiger.

 

http://developer.apple.com/library/ios/#documentation/MusicAudio/Conceptual/CoreAudioOverview/SupportedAudioFormatsMacOSX/SupportedAudioFormatsMacOSX.html

 

Any clarifications here would be appreciated.

 

Best,

 

-David


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References: 
 >AC-3 decode in Leopard+ (From: David Zhao <email@hidden>)
 >RE: AC-3 decode in Leopard+ (From: Stéphane Beauchemin <email@hidden>)

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