Free aac software for linux

The FAAC project includes the AAC encoder FAAC and decoder FAAD2.
FAAC supports several MPEG-4 object types (LC, LTP, HE AAC, Main, PS) and file formats (raw AAC, MP4, ADTS AAC), multichannel and gapless en/decoding as well as MP4 metadata tags.
The codecs are compatible with standard-compliant audio applications using one or more of these profiles.
General FAAC compiling instructions:
1. Make sure you have autoconf, automake and libtool installed. For MP4 support, you must have libmp4v2 (included in faad2) installed.
2. cd to FAAC source dir
3. Run:
./bootstrap
./configure
make
make install
Usage:
faac [options]
Options:
-a X Set average bitrate to approximately X kbps per channel (i.e. using -a 64 averages at 128 kbps/stereo).
-c < bandwidth > Set the bandwidth in Hz (default value depends on sample rate)
-q < quality > Set quantizer quality (default: 100, averages at approx. 128 kbps VBR for a normal stereo input file at 16 bit and 44.1 kHz sample rate).
--tns Enable TNS coding.
--notns Disable TNS coding.
-n Disable mid/side coding.
-m X AAC MPEG version, X can be 2 or 4 (default: MPEG-2, so for the sake of interoperability with non-standard compliant players like QuickTime 6 you should set it to "4").
-o X AAC object type, X can be LC, MAIN or LTP (default: LC, for the same reason as with the MPEG version dont use Main or LTP).
-r RAW AAC output file (i.e. without ADTS headers).
-P Raw PCM input mode.
-R Raw PCM input sample rate in Hz (default: 44100 Hz).
-B Raw PCM input bit depth (default: 16 bits, also possible 8 bits).
-C Raw PCM input channels (default: 2).
- < stdin > If you simply use a hyphen/minus sign instead of an input file name, FAAC can encode directly from stdin, thus enabling piping within other applications like foobar2000 or mp4live.
Note: VBR output bitrate depends on -q AND -c, so you should only vary the default setting -q 100 -c 16000 if you know what youre doing and/or want to experiment with other cutoff frequencies at a given quality setting.
The ABR setting with -a is an approximate average bitrate that does not use a bit reservoir, i.e -a 64 and -q 100 at 44.1 kHz will result in exactly the same output file.
The following list should give some orientation for useful -q and -c settings, based on FAAC v1.17. The resulting VBR bitrates are referring to an average sounding stereo file with 16bit, 44.1 kHz, i.e. ct_reference.wav in this case. Multiplexing these AAC files to MP4 with e.g. mp4creator will result in a ~3 kbps lower bitrate because of the stripped ADTS headers:
-q 130 -c 22000 -m 4 (~218 kbps)
-q 120 -c 20000 -m 4 (~194 kbps)
-q 110 -c 18000 -m 4 (~158 kbps)
-q 100 -c 16000 -m 4 (~129 kbps)
-q 90 -c 14000 -m 4 (~103 kbps)
-q 80 -c 12000 -m 4 (~79 kbps)
-q 70 -c 10000 -m 4 (~62 kbps)
The added -m 4 switch does not change the bitrate or sound of course, but is recommended for most AAC/MP4 players that use an updated FAAD2-based plugin from this year (Winamp 2.x, foobar2000 etc.) or cant decode MPEG-2 AAC LC files like QuickTime 6. Philips Expanium users should not use this switch, because their CD portable does not know MPEG-4 AAC files.
Enhancements:
- Small bug fixes since last version

Net::DAAP::Server::AAC is a DAAP server that handles MP3 and AAC.

SYNOPSIS

use POE;
use Net::DAAP::Server::AAC;

# same as Net::DAAP::Server
my $server = Net::DAAP::Server::AAC->new(
path => "/home/miyagawa/music",
port => 9999,
name => "My Music",
);
$poe_kernel->run;

Net::DAAP::Server::AAC is a Net::DAAP::Servers subclass that handles MP4/AAC files as well, in addition to the MP3 music files.

GPAC is an implementation of the MPEG-4 Systems standard (ISO/IEC 14496-1) developed from scratch in ANSI C.
The main development goal is to provide a clean (a.k.a. readable by as many people as possible), small and flexible alternative to the MPEG-4 Systems reference software (known as IM1 and distributed in ISO/IEC 14496-5). The MPEG-4 Reference software is indeed a very large piece of software, designed to verify the standard rather than provide a small, production-stable software.
GPAC is written in ANSI C for portability reasons (embedded platforms and DSPs) with a simple goal: keep the memory footprint as low as possible.
The second development goal is to achieve integration of recent multimedia standards (SVG/SMIL, VRML, X3D, SWF, etc) into a single framework. This stage is still under drafting but has started with VRML97 support.
GPAC already features 2D and 3D multimedia playback, MPEG-4 Systems encoders/multiplexers and publishing tools for content distribution.
GPAC is licensed under the GNU General Public License (see FAQ).
The current GPAC release (0.2.3) already covers a very large part of the standard, and features what can probably be seen as the most advanced and robust 2D MPEG-4 Player available worldwide, as well as a decent 3D MPEG-4/VRML player with some X3D support.
GPAC is currently running under Windows, Linux platforms - WindowsCE/PocketPC platform is not actively maintained but GPAC 0.2.3 is running on an iPaq device.
Main features:
- MP4 and 3GPP file reading, both local and through http download (QuickTime FastStart).
- MP3 (local and http) and ShoutCast.
- AAC file reading and AAC http streaming (needs latest faad2 cvs tarball).
- Media Codecs: MPEG-4 Visual Simple Profile, MPEG-4 Audio AAC, JPEG, PNG, AMR audio and all codecs supported by the FFMPEG library (including AVC/H264).
- All media containers supported by the FFMPEG library: avi, mpeg, vob, etc...
- Xiph.org Media: Ogg file format (including http read and Icecast), Vorbis audio and Theora video.
- 3GPP Timed Text / MPEG-4 Streaming Text.
- Streaming support: RTP and RTSP/SDP for MPEG-4 Visual/Audio, MPEG-1/2 audio and video, 3GPP timed text, AMR audio and H263 video.
- Multichannel audio, multichannel to stereo mapper.
- MPEG-4 scenes (2D, 3D and mixed 2D/3D scenes) - read from binary format (BIFS) and textual format (BT/XMT-A).
- VRML 2.0 (VRML97) scenes (without GEO or NURBS extensions).
- X3D scenes (not complete) - supports both X3D (XML format) and X3DV (VRML format).
- JavaScript support for MPEG4/X3D/VRML.
- Compressed description (GZip) supported for all textual formats of MPEG4/X3D/VRML.
- Simple SVG scenes (not complete).
- Simple SWF (Macromedia Flash) scenes (no ActionScript, no clipping, etc).
- HTTP reading of all scene descriptions.

HandBrake application is a GPLd multiplatform, multithreaded DVD to MPEG-4 ripper/converter. HandBrake was originally available on the BeOS, but now has been ported over to MacOS X and to GNU/Linux.
Main features:
Supported sources:
- Any DVD-like source: VIDEO_TS folder, DVD image or real DVD (even encrypted)
- PAL or NTSC
- AC-3, LPCM or MPEG audio tracks
Outputs:
- File format: MP4, AVI or OGM
- Video: MPEG-4 or H.264 (1 or 2 passes or constant quantizer encoding)
- Audio: AAC, MP3, Vorbis or AC-3 pass-through (supports encoding of several audio tracks)
Misc features
- Chapter selection
- Basic subtitle support (burned into the picture)
- Integrated bitrate calculator
- Picture deinterlacing, cropping and scaling
- Grayscale encoding

xwax is vinyl emulation software for Linux. It allows DJs and turntablists to playback digital audio files (MP3, Ogg Vorbis, FLAC, AAC and more), controlled using a normal pair of turntables via timecoded vinyls.
xwax project is designed for both beat mixing and scratch mixing. Needle drops, pitch changes, scratching, spinbacks and rewinds are all supported, and feel just like the audio is pressed onto the vinyl itself. The focus is on an accurate vinyl feel which is efficient, stable and fast.
Enhancements:
- Even more accurate timecode tracking and support for Traktor Scratch timecode vinyls were added.
- This is the first release of xwax that is open-source.

YamiPod is a freeware application to efficiently manage your iPod under Mac OS X, Windows and Linux. YamiPod can be run directly from your iPod and needs no installation.
Take a look at the feature list to find out what it can do and feel free to suggest anything that might be missing.
Main features:
- stand alone program, no installation required
- iPod is automatically recognized
- mp3 and AAC files can be copied to/from iPod
- read/write access to mp3 id3 and AAC infos
- lyrics support (with internet auto search)
- playlist support (On-The-Go included)
- playlists import (PLS,M3U)
- playlists export (PLS,M3U)
- full unicode support
- auto-download new versions
- advanced song import/export settings
- 2 restore features
- built in music player
- iPod informations
- 2 search features
- remove duplicated tracks
- find lost music files
- easy ratings edit
- PC to iPod synchronization
- create and edit notes
- automatically update song playcounts
- News RSS and podcasts to iPod upload
- Growl support (Apple only)
- export song lists to HTML or plain text files
- multiple iPods support
- Audioscrobbler support
Enhancements:
- [FIX] iTunes length at the end error
- [FIX] application quitted after unexpectedly in some situations

Perl Audio Converter (PAC) is a tool for converting multiple audio types from one format to another. It supports MP2, MP3, Ogg Vorbis, FLAC, Shorten, Monkey Audio, FAAC (AAC/M4A/MP4), Musepack (MPC), Wavpack (WV), OptimFrog (OFR/OFS), TTA, LPAC, Kexis (KXS), AIFF, AC3, Lossless Audio (LA), AU, SND, RAW, VOC, SMP, RealAudio (RA/RAM), WAV, and WMA.
It can also convert audio from the following video formats/extensions: RM, RV, ASF, DivX, MPG, MKV, MPEG, AVI, MOV, OGM, QT, VCD, VOB, and WMV. A CD ripping function with CDDB support, batch and playlist conversion, tag preservation for most supported formats, independent tag reading/writing, and extensions for Konqueror and amaroK is also provided.
Enhancements:
- Added: MP4::Info dependency IO::String to pacpl-install
- Updated: License GPLv3
- Bug Fix: Directory conversions. pacpl was claiming the directory was empty and prompting to use the --recursive option...Thanks to John Meyer for the report.

DarkSnow is a darkice GUI, it is very simple and its written using GTK2, by Rafael Diniz, under GPLv2.
Enhancements:
- This release adds an AAC format option (needs darkice 0.16).
- It changes the way that darksnow gets the darkice output (now it uses FIFO).
- A memory leak has been fixed and some minor improvements made.