Free convert audio files freeware software for linux

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.

Audio::File is a audio file abstraction library.

SYNOPSIS

use Audio::File;
my $file = Audio::File->new( "foo.bar" );

print "The ". $file->type() ."-file ". $file->name
." is ". int $file->length() ." seconds long.n";

print "Its interpreted by ". $file->tag->artist()
." and called ". $file->tag->title() ".n";

Audio::File abstracts a single audio file, independant of its format. Using this module you can access a files meta-info like title, album, etc. as well as the files audio-properties like its length and bitrate.

Currently only the formats flac, ogg vorbis and mp3 are supported, but support for other formats may be easily added.

AudioFile::Info is a Perl extension to get info from audio files.

SYNOPSIS

use AudioFile::Info;

my $song = AudioFile::Info->new($some_mp3_or_ogg_vorbis_file);

print Title: , $song->title, "n",
Artist: , $song->artist, "n".
Album: , $song->album, "n",
Track: , $song->track, "n";
Year: , $song->year, "n",
Genre: , $song->genre, "n";

$song->title(something else); # Changes the title

ABSTRACT

AudioFile::Info is a simple way to get track information out of an audio file. It gives a unified interface for extracting information from both MP3 and Ogg Vorbis files.
Some AudioFile::Info plugins also have the ability to write data back to the file.

MPEG::Audio::Frame is a class for weeding out MPEG audio frames out of a file handle.

SYNOPSIS

use MPEG::Audio::Frame;

open FILE,"file.mp3";

while(my $frame = MPEG::Audio::Frame->read(*FILE)){
print $frame->offset(), ": ", $frame->bitrate(), "Kbps/", $frame->sample()/1000, "KHzn"; # or something.
}

A very simple, pure Perl module which allows parsing out data from mp3 files, or streams, and chunking them up into different frames. You can use this to accurately determine the length of an mp3, filter nonaudio data, or chunk up the file for streaming via datagram. Virtually anything is possible.

Audio::TagLib::File is a file class with some useful methods for tag manipulation.

This class is a basic file class with some methods that are particularly useful for tag editors. It has methods to take advantage of ByteVector and a binary search method for finding patterns in a file.

DESTROY()

Destroys this File instance.

PV name()

Returns the file name in the local file system encoding.

Tag tag() [pure virtual]

Returns this files tag. This should be reimplemented in the concrete subclasses.

AudioProperties audioProperties() [pure virtual]

Returns this files audio properties. This should be reimplemented in the concrete subclasses. If no audio properties were read then this will return undef.

BOOL save() [pure virtual]

Save the file and its associated tags. This should be reimplemented in the concrete subclasses. Returns true if the save succeeds.

ByteVector readBlock(UV $length)

Reads a block of size $length at the current get pointer.

void writeBlock(ByteVector $data)

Attempts to write the block $data at the current get pointer. If the file is currently only opened read only -- i.e. readOnly() returns true -- this attempts to reopen the file in read/write mode.

IV find(ByteVector $pattern, IV $fromOffset = 0, ByteVector $before = ByteVector::null)

Returns the offset in the file that $pattern occurs at or -1 if it can not be found. If $before is set, the search will only continue until the pattern $before is found. This is useful for tagging purposes to search for a tag before the synch frame.

Searching starts at $fromOffset, which defaults to the beginning of the file.

This has the practial limitation that $pattern can not be longer than the buffer size used by readBlock(). Currently this is 1024 bytes.

IV rfind(ByteVector $pattern, IV $fromOffset = 0, ByteVector $before = ByteVector::null)

Returns the offset in the file that $pattern at or -1 if it can not be found. If $before is set, the search will only continue until the pattern $before is found. This is useful for tagging purposes to search for a tag before the synch frame.

Searching starts at $fromOffset and proceeds from the that point to the beginning of the file and defaults to the end of the file.

This has the practial limitation that $pattern can not be longer than the buffer size used by readBlock(). Currently this is 1024 bytes.

void insert(ByteVector $data, UV $start = 0, UV $replace = 0)

Insert $data at position $start in the file overwriting $replace bytes of the original content.

This method is slow since it requires rewriting all of the file after the insertion point.

void removeBlock(UV $start = 0, UV $length = 0)

Removes a block of the file starting a $start and continuing for $length bytes.
This method is slow since it involves rewriting all of the file after the removed portion.

BOOL readOnly()

Returns true if the file is read only (or if the file can not be opened).

BOOL isOpen()

Since the file can currently only be opened as an argument to the constructor (sort-of by design), this returns if that open succeeded.

BOOL isValid()

Returns true if the file is open and readble and valid information for the Tag and / or AudioProperties was found.

void seek(IV $offset, PV $p = "Beginning")

Move the I/O pointer to $offset in the file from position $p. This defaults to seeking from the beginning of the file.

void clear()

Reset the end-of-file and error flags on the file.

IV tell()

Returns the current offset withing the file.

IV length()

Returns the length of the file.

BOOL isReadable(PV $file) [static]

Returns true if $file can be opened for reading. If the file does not exist, this will return false.

BOOL isWritable(PV $file) [static]

Returns true if $file can be opened for writing.

%_Position

Position in the file used for seeking. C<<less