FAAC is an encoder for a lossy sound compression scheme specified in MPEG-2 Part 7 and MPEG-4 Part 3 standards and known as Advanced Audio Coding (AAC). This encoder is useful for producing files that can be played back on iPod. Moreover, iPod does not understand other sound compression schemes in video files.
Download (HTTP): http://downloads.sourceforge.net/faac/faac-1.26.tar.gz
Download MD5 sum: 1d7c019bd2dbb4f3101b8937ebc59cf6
Download size: 392 KB
Estimated disk space required: 33 MB
Estimated build time: 0.6 SBU
libmp4v2 from mpeg4ip (untested, as of 2007-09-28, development of the project is stopped; an internal version of the library is used if the external one is not found).
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/faac
Install FAAC by running the following commands:
./bootstrap && sed -i -e '/obj-type/d' -e '/Long Term/d' frontend/main.c && ./configure --prefix=/usr && make
This package does not come with a test suite. However, basic functionality can be tested by encoding a sample WAV file (the sample file is installed by the ALSA Utilities-1.0.13 package:
./frontend/faac -o Front_Left.mp4 /usr/share/sounds/alsa/Front_Left.wav
faad Front_Left.mp4 aplay Front_Left.wav
aplay should identify the file as “Signed 16 bit Little Endian, Rate 48000 Hz, Stereo”, and you should hear the words “front left”.
Now, as the
./bootstrap: This command runs GNU Autotools to create the configure script and other required build files.
sed -i ...: This
command removes documentation for the
--obj-type parameter from the faac --long-help command output.
This parameter is already disabled in FAAC-1.26 due to sound
quality issues with object types other than “Low Complexity”.
--enable-drm: This option is supposed
to enable support for encoding files for Digital Radio Mondiale, but actually
breaks the base functionality of the package (e.g., the resulting
faac program produces
files that cannot be decoded by FAAD2-2.6.1, even if compiled with DRM
support). Don't use it.
The quality of FAAC is not up to par with the best AAC encoders currently available. Also, it only supports AAC and not High Efficiency AAC (also known as aacPlus), which provides better quality at low bitrates by means of using the “spectral band replication” technology. There are the following alternative programs for producing AAC and HE-AAC streams:
Nero AAC Codec: available only in the binary form, the command-line AAC and HE-AAC encoders for Linux are in the same archive as the Windows application.
Enhanced aacPlus general audio codec: available in the
source form, can encode only HE-AAC up to 48 kbps out of the
box, but the maximum bitrate can be changed by editing the
tuning table in the
Note, however, that iPod supports only Low Complexity AAC profile, which is the default in FAAC, but may not be the default in Nero AAC Encoder and is completely unavailable in the 3GPP encoder.
Last updated on 2008-05-09 07:42:27 -0500