Lists

Open Menu Close Menu

Terms and Conditions
Lists hosted on this site
Email the Postmaster
Tips for posting to public mailing lists

Re: multiple audio channels represented in a single track

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: multiple audio channels represented in a single track

Subject: Re: multiple audio channels represented in a single track
From: Greg Chapman <email@hidden>
Date: Wed, 25 Feb 2009 11:20:12 -0800

Thanks for this. If we interleave the audio as suggested below, would an extension be required?

The channel layout extension is optional, but recommended for multichannel tracks (otherwise QuickTime will have to guess how to mix down for playback on a device with fewer channels).

Also, for 24 bit lpcm audio with 8 channels, the constBytesPerAudioPacket = 24? And constLPCMFramesPerAudioPacket = 1?

Yes. 8 channels * 3 bytes = 24 bytes per LPCM frame, and 1 LPCM frame per packet.

Greg
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden



References:  
  >multiple audio channels represented in a single track (From: Tommy Schell <email@hidden>)
  >Re: multiple audio channels represented in a single track (From: Greg Chapman <email@hidden>)
  >Re: multiple audio channels represented in a single track (From: Greg Chapman <email@hidden>)
  >Re: multiple audio channels represented in a single track (From: Tommy Schell <email@hidden>)




Prev by Date:
Re: multiple audio channels represented in a single track

Next by Date:
Re: Getting the PreferedHardwareIOBufferDuration

Previous by thread:
Re: multiple audio channels represented in a single track

Next by thread:
AURender Call back function

Index(es):

Date
Thread