Difference between revisions of "Apple AAC"

From Hydrogenaudio Knowledgebase
Jump to: navigation, search
m (+ {{aac-encoders}})
(remake a little)
Line 1: Line 1:
 
{{aac-encoders}}
 
{{aac-encoders}}
−
'''QuickTime AAC''' is known to be one of the highest quality medium-bitrate [[CBR]] and [[VBR]] LC  
+
'''QuickTime AAC''' is an [[AAC]] codec developed by Apple Inc. and included in Apple's media framework, QuickTime. QuickTime is used in [[iTunes]], Safari web browser, and other Apple products. It is known to be one of the highest quality medium-bitrate [[CBR]] and [[VBR]] LC [[AAC]] encoders.  
−
[[AAC]] encoders and is also another commercial AAC implementation. The current version of Quicktime supports [[Multichannel]] encoding up to 8 channels, and HE-AAC v1 with [[SBR]].
+
  
−
Although this part of the commercial QuickTime Pro, VBR and CBR modes are available for free
+
The encoder does consistently well in [[Hydrogenaudio Listening Tests|Hydrogenaudio listening tests]].
−
through [http://www.apple.com/itunes/ iTunes] (with a maximum [[sampling rate]] of 44.1khz for iTunes 10+ and 48khz for [http://www.oldapps.com/itunes.php?old_itunes=61 iTunes 9-])
+
  
−
Free Third-party CLI interfaces such as [http://sites.google.com/site/qaacpage/ qAAC] expose more modes such as TVBR (equivalent to quality modes in other encoders) and CVBR ("constrained VBR")
+
== QAAC ==
−
 
+
{{Software Infobox
−
In recent tests for [http://listening-tests.hydrogenaudio.org/igorc/results.html 64kbps HE-AAC] and [http://listening-tests.hydrogenaudio.org/igorc/aac-96-a/results.html 96kbps LC-AAC] Quicktime has consistently come out near the top. This also applies to higher bitrates such as 128kbps and is likely to apply to higher bitrates such as 160kbps and beyond.
+
| name = qaac
−
 
+
| logo =
−
In 2009, Quicktime was updated to 7.6 which [http://support.apple.com/kb/HT3292 "Improves AAC encoding fidelity"]. The bitrate distribution algorithm was also [http://forums.macrumors.com/showpost.php?p=6986639&postcount=70 changed].
+
| screenshot =
 +
| caption =
 +
| maintainer = nu774
 +
| stable_release = ?
 +
| preview_release =
 +
| operating_system = Windows
 +
| use = Encoder
 +
| license = Various
 +
| website = [https://github.com/nu774/qaac github page for QAAC]
 +
}}
 +
QAAC is an open-source wrapper for QuickTime's AAC and ALAC encoders, that allow them to be used directly in applications that don't use QuickTime. It exists only for Windows.
  
 
==External links==
 
==External links==
 
*[http://www.apple.com/quicktime Apple's Quicktime Website]
 
*[http://www.apple.com/quicktime Apple's Quicktime Website]
−
 
−
{{stub}}
 

Revision as of 00:37, 28 July 2014

Current AAC encoders
(most to least recommended)
1 Apple AAC M/W
2 FhG AAC (Winamp) W
3 Fraunhofer FDK AAC S/L/M/W
4 Nero AAC L/W
5 FFmpeg 3.0+ AAC encoder S/L/M/W
6 FAAC S/L/M/W
7 Libav (pre-3.0 FFmpeg) AAC encoder S/L/M/W
S Source code available; L Linux; M macOS; W Windows
List of AAC encoders

QuickTime AAC is an AAC codec developed by Apple Inc. and included in Apple's media framework, QuickTime. QuickTime is used in iTunes, Safari web browser, and other Apple products. It is known to be one of the highest quality medium-bitrate CBR and VBR LC AAC encoders.

The encoder does consistently well in Hydrogenaudio listening tests.

QAAC

qaac

Developer(s) nu774
Release information
Initial release {{{released}}}
Stable release  ?
Preview release
Compatibility
Operating system Windows
Additional information
Use Encoder
License Various
Website github page for QAAC

QAAC is an open-source wrapper for QuickTime's AAC and ALAC encoders, that allow them to be used directly in applications that don't use QuickTime. It exists only for Windows.

External links

Retrieved from "https://wiki.hydrogenaud.io/index.php?title=Apple_AAC&oldid=25985"