Changes between Version 63 and Version 64 of Encode/AAC

Timestamp:

Apr 21, 2023, 2:14:45 PM (3 years ago)

Author:

Mingye Wang

Comment:

--

Encode/AAC

@@ -11 +11 @@
 = Fraunhofer FDK AAC (`libfdk_aac`) =#fdk_aac
 
-The Fraunhofer FDK AAC codec library. This is currently the highest-quality AAC encoder available with ffmpeg. Requires ffmpeg to be configured with `--enable-libfdk-aac` (and additionally `--enable-nonfree` if you're also using `--enable-gpl`).
+The Fraunhofer FDK AAC codec library. This is currently the highest-quality AAC encoder available with ffmpeg (except on macOS, see below). Requires ffmpeg to be configured with `--enable-libfdk-aac` (and additionally `--enable-nonfree` if you're also using `--enable-gpl`).
 
 Detailed information about the FDK AAC library (not FFmpeg specific) can be found at [http://wiki.hydrogenaud.io/index.php?title=Fraunhofer_FDK_AAC HydrogenAudio Knowledgebase: Fraunhofer FDK AAC].
@@ -144 +144 @@
 ----
 = audiotoolbox Encoder =
-When a build is configured with --enable-audiotoolbox, Apple's audioToolbox.framework (normally available only on macOS) will provide a series of codecs suffixed `_at`. Apple's encoder is quite good in listening tests and has HE-AAC support, so that the exact same list of `-profile:a` flags from FDK work. You may have come across this implementation on other platforms as "QAAC" or "audioToolboxWrapper", but licensing issues for these modifications is too much for FFmpeg to deal with.
+When a build is configured with --enable-audiotoolbox, Apple's audioToolbox.framework (normally available only on macOS) will provide a series of codecs suffixed `_at`. Apple's encoder [[is even better than FDK-AAC according to HydrogenAudio|https://wiki.hydrogenaud.io/index.php?title=Apple_AAC]] and has HE-AAC support, so that the exact same list of `-profile:a` flags from FDK work. You may have come across this implementation on other platforms as "QAAC" or "audioToolboxWrapper", but licensing issues for these modifications is too much for FFmpeg to deal with.
 {{{#!comment
 see audiotoolboxenc.c, ffat_get_format_id()