Free mp3 encoder mac software for linux

iPod Video Encoder is a command line tool for convenient encoding of video files for use on iPod video. iPod Video Encoder project uses the ffmpeg tool for the actual encoding.
It features recursive encoding of all files in a directory, and generating a podcast.xml file for convenient use in iTunes.
It can be used in a cron job that periodically checks directories for new files and encodes them without user intervention.
Main features:
- Encoding of single files
- Optional specification of a/v bitrates
- Recursively encode all files in a directory
- Generating a podcast.xml for convenient use in iTunes
Options:
--version show programs version number and exit
-h, --help show this help message and exit
-R, --recursive Process directories recusively
-f, --force Force re-encode existing iPod videos
-t, --test Only encode first 10 seconds, to produce test videos
-e EXTENSIONS, --extensions=EXTENSIONS
Comma separated list of input extensions. Default: avi
-i IPODEXT, --ipodext=IPODEXT
iPod extension. Default: .ipod.mp4
-b VIDEO_RATE, --video-rate=VIDEO_RATE
Video bit rate, in kbps (default: 1024)
-a AUDIO_RATE, --audio-rate=AUDIO_RATE
Audio bit rate, in kbps (128)
-W WIDTH, --width=WIDTH
Video width, in pixels (default: 320)
-H HEIGHT, --height=HEIGHT
Video height, in pixels (default: 240)
-P, --pretend Do not really encode, just print out the ffmpeg
commands which would be executed
-v, --verbose Enable verbose output
Podcast options:
-p, --podcast Generate a podcast.xml file for each directory.
--podcast-documentroot=PODCAST_DOCUMENTROOT
Podcast document root; eg. /var/data/Movies/
--podcast-baseurl=PODCAST_BASEURL
Podcast base URL; eg. http://localhost/
Enhancements:
- Only uses the -e option for processing directories.
- The default ipod extension is now _ipod.mp4 for Windows compatibility.
- The README file has been extended with information on the .ipod-encoder settings file.
- The program no longer crashes when HOME is not set on Windows.
- --width and --height parameters have been added.

MP3c is a special program for converting audio-cds to ogg/mp3-format. It is a frontend for every grab-program and mp3-encoder. Nearly every program should be supported. MP3c has two different run-modes: An interactive mode with a menu-enviroment (based on curses-lib), which can used on textconsoles as well under X11, and a batchmode, which allows automatic encoding of cds inside shellscripts (eg at night within cronjobs).
There are two different possibilities for encoding (depends on your ripper and encoder): Non-Fly encoding, where an audio-track is first grabbed from cds and then encoded, and On-Fly encoding, where grabbing and encoding is one step. Normally you should refer to Non-Fly encoding, since your cdrom-drive hasnt to work all the time, and some encoder produces a "click" at the beginning of mp3/ogg-files if On-Fly encoding is used. The only disadvantage of Non-Fly encoding is, that there is a temp-file, which can grow up to 50-100 MB sometimes.
Information about songtitle on your cds are received with help of CDDB database. In contrast to other programs, an CDDB-entry is detailed analyzed to find every information even for sampler-cds.
Creation of filenames is userdefined. You can use pattern to constitute the appearance of your mp3-files individually. Furthermore you can decide how spaces within filenames should be handled (you can allow them, convert them to underscores "_" or just kill them).
Interessting is the possibility of shellscript creation, which contains all functionality for encoding your cds. You can start these scripts as daemon-processes or run them at night inside a cronjob.
Recommended programs for the use of MP3c are: CDparanoia as audio-cd grabber, Encoder as MP3-encoder and MP3info for creating MP3-ID-tags. For OGG use oggenc. If you need, you can download these programs here, or a complete package with these programs inside. Furthermore you can download runable binaries, but only for glibc 2.1 (linux i386) at the moment. If you like to create RPMs and/or binaries for other systems and libraries, please send these to me, so that I can put it on my page.
Enhancements:
- Switched to CDDB protocol level 5 to support detection and saving of year and genre information.

mpegrec is a FREE, Open Source command-line tool for recording audio on Windows and Linux. It may be used to record direct-to-disk WAV files, and MP3 files. MP3 encoding requires an external MP3 encoder such as the lame encoder. Other encoders can be used with minimal changes to the source code.

Unlike other WAV recorders available online, mpegrec is free -- even on Windows. (MP3 encoding may require a licensed encoder.) The command-line inteface is easy to use -- easy enough you will not miss a silly GUI. If you have an audio card capable of hardware-mpeg encoding, mpegrec for Windows can utilize the cards features for direct-to-disk MP3 recording.

NOTE: mpegrec on Linux is slightly dated and may require porting to newer kernels. If you port mpegrec feel free to share it in accordance with the GNU GPL license. If you can make the package small enough, I will consider posting it here.

To install wavrec and mpegrec simply type make at the shell:

make

To install wavrec and a sym-link for mpegrec type make install:

make install

WideMP3 is a relatively simple distributed MP3 encoder. It works in a client-server fashion, with multiple servers and a client that feeds the PCM audio over a network connection to the server. The server sends back the encoded audio, which the client then writes to a file. The actual encoding is done via an external encoder, such as BladeEnc.

Installation is very simple simple.

Extract the source distribution, and compile and install as follows:

./configure
make
su
make install

Current supported platforms are:

Debian GNU/Linux 2.2 on Intel x86 and Alpha.
Debian GNU/Linux 2.1 on Intel x86
OpenBSD 2.7 on Intel x86

It should also work on FreeBSD, although this has not yet been tested. Positive and negative reports on different platforms will be appreciated, especially if accompanied by a patch to make it work.

If you want to contribute a patch, you must be willing for the patch to be released under the GNU General Public License. Patches should be in context diff format (diff -c) or unified diff format (diff -u).

Currently supported MP3 encoders:
Bladeenc 0.9x - http://bladeenc.mp3.no/
Positive and negative reports for different encoders will be appreciated, especially if accompanied by a patch to make it work.

Dynamic MP3 Lister was a project I started a long time ago to create dynamic lists of MP3s quickly and easily.

Features MP3 Information extraction for things like bitrate, channels, playtime and more.

Please note that this script is discontinued, and is only shown here now as an example of my work.

Quick and Dirty Transcoder provides a simple shell script that adds transcoding support to Amarok using gstreamer.
The only prerequisites are that you have gstreamer installed and the appropriate plugins.
Quick and Dirty Transcoder works with transcoding when copying files to a media player and also adds a context menu to allow you to transcode files in your collection. When doing the latter, the transcoded file will be written to the same directory as the original file.
You can configure dirtyxcode by creating a file in your home directory ~/.dirtyxcode.sh. The format of the configuration is a shell script that will be sourced by dirtyxcode. You can use this to control how dirtyxcode constructs the gstreamer pipeline. For example, to change the flacencoder element add the following:
flac_enc="myflacencoder myflacencopt=foo"
You can also add options to the existing encoders by setting
< format >_enc_options, for example to change the preset quality
setting for the mp3 encoder (lame), add the following to your
~/.dirtyxcode.sh file.
mp3_enc_options="preset=extreme"
The default gstreamer plugins used by Quick and Dirty Transcoder are:
- wav: wavenc
- mp3: lame
- ogg: vorbisenc
- m4a: faac
- aac: faac
- flac: flacenc