• Fixed: qaac didn't correctly handle full pathnames as input since v2.63 or so.
• libsndfile: in addition to libsndfile-1.dll, also try sndfile.dll.

Added support for new CoreAudioToolbox.dll location.

As of iTunes 12.10.9.3 installer, they have removed Apple Application Support component (x86/x64). The Dlls under this component are now installed directly under the same location as iTunes.exe, and they are now 64bit only for 64bit iTunes. So, if you use 64bit iTunes, you can only use qaac64.exe.

You need this version of qaac to load Dlls installed by the new iTunes installer.

Unfortunately they have also changed how the Dlls are stored in the installer. makeportable.cmd doesn't work for the new installer, and it will not work in the future too, unless someone finds a workaround.

• Updated taglib
• Updated libsndfile header
• Add support for opus input through libsndfile

Note that opus support in libsndfile was committed VERY recently and it's not yet released officially. Newest official release of libsndfile is version 1.0.28, which is some 3 years old and doesn't contain opus support. So if you want libsndfile with opus support, you have to grab sources from github and build it yourself.

AppleApplicationSupports DLLs are now built with Visual Studio 2015, and dependent on newer MSVC runtime DLLs.

makeportable.cmd now extracts two of the MSVC runtime DLLs (vcruntime140.dll and msvcp140.dll) included in AppleApplicationSupport installer.

However, they are still dependent on the Universal C Runtime (UCRT), which means that Windows XP is no longer supported.

UCRT is now part of OS, and is preinstalled on Windows 10.

If you are not on Windows 10 but on Vista SP2 or later, it's still probably OK. If not, see here: Update for Universal C Runtime in Windows

• MP4Source: when channel layout is not present in the ALAC magic cookie, defaulting to more appropriate channel layout.
• libmp4v2: fixed an issue reading chunk offsets in co64 box (typically present in MP4 file bigger than 4GB).

Write non-zero avgBitrate field again, for iPod 5G compatibility: https://hydrogenaud.io/index.php/topic,85135.msg957234.html#msg957234

Implemented look-ahead on --drc. The amount of look-ahead is the same as the attack time.

• Fixed a FLAC parser issue that picture tag gets lost when picture metadata comes before vorbis comments (thx to Matt Tyson).
• Suppress console window title message when -s is specified.
• Updated taglib.

Fixed regression of 2.63: HE-AAC frames were incorrectly multiplexed.

• Support decoding FLAC in MP4.
• AAC decoder: now recognizes 6.1ch/7.1ch AAC channel config constants (11 and 12) defined in 14496-3:2009/Amd 4:2013
• Concatenating files with no title tag with --concat now creates empty chapter name (formerly file name was used).
• --start now accept negative value. using --start and --delay at the same time is not allowed now. These two options are the same in functionality-wise, except for the reversed sign (For trimming, you use positive value for ---start, and negative value for --delay).
• --adts and --concat doesn't allow concatenating files with varying sample format anymore.
• External dlls are now loaded in lazy way, which means that they are not loaded until needed.
• Increased buffering size for --play to avoid glitches on multi channel files.
• --native-resampler now always use dedicated AudioConverter.
• CAF: enabled 7.1ch rear AAC output.
• AAC in CAF: when chan chunk is not present, get channel layout from kuki chunk.
• Named pipe output is removed. I guess it has been rarely used anyway, but if you happen to want it, use https://github.com/nu774/namedpipe .