Free vbr. software for linux

dvdspanky is a CLI tool to convert video files into DVD compatible MPEG streams. It is designed to be easy to use no matter the input source, to automate common transcoding tasks and provide powerful features. It is written in C and provides a front-end to transcode, MJPEG tools, mplayer and feh. The output can be used in programs like dvdauthor.
Main features:
- Consistent options no matter the input source
- Clean and clear output
- VBR and CBR encoding
- Output preview
- Destination file size specification
- PAL and NTSC export
- Post-processing
- Automatic volume adjustment
- Automatic cropping and letter-boxing
- Automatic mplayer fallback decoding
- Automatic aspect calculation
- Automatic DVD compatibility adjustments

Audio::TagLib::MPEG::XingHeader is an implementation of the Xing VBR headers.

SYNOPSIS

use Audio::TagLib::MPEG::XingHeader;

my $i = Audio::TagLib::MPEG::XingHeader->new($data);
print $i->isValid() ? "valid" : "invalid", "n";

This is a minimalistic implementation of the Xing VBR headers. Xing headers are often added to VBR (variable bit rate) MP3 streams to make it easy to compute the length and quality of a VBR stream. Our implementation is only concerned with the total size of the stream (so that we can calculate the total playing time and the average bitrate). It uses http://home.pcisys.net/~melanson/codecs/mp3extensions.txt and the XMMS sources as references.

new(ByteVector $data)

Parses a Xing header based on $data. The data must be at least 16 bytes long (anything longer than this is discarded).

DESTROY()

Destroy this XingHeader instance

BOOL isValid()

Returns true if the data was parsed properly and if there is a vaild Xing header present.

UV totalFrames()

Returns the total number of frames.

UV totalSize()

Returns the total size of stream in bytes.

IV xingHeaderOffset(PV $version, PV $channelMode) [static]

Returns the offset for the start of this Xing header, given the version and channels of the frame

see Audio::TagLib::MPEG::Header

xmpgedit project is an MP3 editor for VBR and CBR encoded files.
xmpgedit is an MPEG 1 layer 1/2/3 (MP3), MPEG 2, and MPEG 2.5 audio file editor that is capable of processing both Constant Bit Rate (CBR) and Variable Bit Rate (VBR) encoded files.
xmpgedit can cut an input MPEG file into one or more output files, as well as join one or more input MPEG files into a single output file. Since no decoding or encoding occurs during editing, there is no audio quality loss when editing with xmpgedit.
Enhancements:
- This release fixes an occasional crash in xmpgedit when adjusting the volume after playback has stopped.
- xmpgedit playto start time is fixed, which would play beyond the specified edit time in some circumstances.
- Added the command "Copy start time" to the xmpgedit edit menu.

gst-id3v23-tags application provides a gstreamer plugin that adds metadata to media files (mainly MP3 audio files) with ID3 version 2.3.0 tags. This information includes elements such as the tracks title, author, performing artist, etc.

Other gstreamer taggers either create ID3 1.0 tags, which have significant limitations, or ID3 2.4 tags, which are not understood by as many MP3 players as ID3 2.3.

The gstreamer framework provides already some ID3 taggers, at least two of them one that encodes the in the version 1.0 and the other in the 2.4. Today most software and hardware mp3 players are able to understand at least one of the two formats. The problem is that not all MP3 players (specially the hardware ones) are able to understand ID3 v2.4 tags and using ID3 v1.0 can have some limitations specially with tags that contain UNICODE characters. Its most likely that today a decent MP3 player will be able to understand ID3 v2.3 tags.

This plugin was written in order to provide an alternative to MP3 players that can understand only ID3 v2.3 tags. This plugin should provide a nicer alternative to the end user over the two existing plugin in the gstreamer framework.

The ID3 v2.3 encoding is actually performed through the library id3lib which is available at http://www.id3lib.org/. The plugin it self depends only on the gstreamer framework (version 0.10) and the library id3lib (version 3.8.3).

To compile do:

make plugin

To install the plugin into your home account (no need to be root) just do:

make install

To use the plugin, just include the element id3v23 in any gstreamer pipeline. Heres an example on how to retag an old MP3 using the command line:

gst-launch filesrc location=a.mp3 ! id3demux ! id3v23 ! filesink location=b.mp3

Heres an example of an gstreamer audio profile used by sound-juiver for
extracting CDs into MP3s:

audio/x-raw-int,rate=44100,channels=2 ! lame mode=0 vbr-quality=6 ! id3v23

Punit is an attempt to create a Python CD ripper using cdparanoia and lame for Linux.

I couldnt get Sound Juicer to rip mp3, GooBox encodes mp3 using VBR which screws up the mp3 times in Foobar2000. I wanted a simple mp3 ripper and i wanted to learn Python so I made my own.

Right now, its a straight forward ripper to mp3 with the format 128 kbps, 44100Hz, stereo. Comments, suggestions, improvements are all welcomed.

Thanks to CDDB.py for the CDDB module.

Aften project is a simple, open-source, A/52 (AC-3) audio encoder.
Main features:
- Implemented my own wav reader
- Converted the fixed-point algorithms to floating-point
- Rearranged the methods and structures
- Added stereo rematrixing (mid/side)
- Added short block MDCT and block switching
- Added VBR encoding mode
- Added variable bandwidth
- Added more complete WAV format support
- Added support for using the alternate bit stream syntax
- Created separate library and frontend
- Added input filters
Enhancements:
- Bit allocation speedups, a compile-time choice of using floats or doubles internally, an internal restructuring of MDCT functions, and bugfixes. quality=0 is now a valid setting.