Lists

Open Menu Close Menu

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

Re: FLLR (compression ?) in AIFF file

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

Re: FLLR (compression ?) in AIFF file

Subject: Re: FLLR (compression ?) in AIFF file
From: Richard Dobson <email@hidden>
Date: Wed, 06 Aug 2008 11:41:26 +0100

Stephen Davis wrote:

The FLLR chunk is added by the AudioFile code to align the data chunk on a 4K page boundary for optimized I/O during playback.

The AIFF specification says to ignore chunks you don't recognize and skip over them. This is such a chunk. :-)

As for the NONE chunk, it is not a separate chunk but is found in the "compressionType" field of the COMM chunk.

Only in AIFC files (the COMM chunk is larger there with extra fields). AIFF does not support compression (or 32bit floats). But the recommendation is that AIFC supercedes AIFF, so should be used for everything, these days.

Richard Dobson

_______________________________________________
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


Follow-Ups:

Re: FLLR (compression ?) in AIFF file
From: William Stewart <email@hidden>
Re: FLLR (compression ?) in AIFF file
From: "Francois Baronnet" <email@hidden>
audio volume with multiple audio queues
From: Peter Thom <email@hidden>


References:  
  >FLLR (compression ?) in AIFF file (From: "Francois Baronnet" <email@hidden>)
  >Re: FLLR (compression ?) in AIFF file (From: Stephen Davis <email@hidden>)




Prev by Date:
Re: Wrap .aac into .m4a container

Next by Date:
Spurious MIDI note-on messages in AU

Previous by thread:
Re: FLLR (compression ?) in AIFF file

Next by thread:
audio volume with multiple audio queues

Index(es):

Date
Thread