Free encoder software for linux

BladeEnc is a freeware MP3 encoder. It is based on the same ISO compression routines as mpegEnc, so you can expect roughly the same, or better, quality . The main difference is the appearance and speed.
BladeEnc doesnt have a nice, user-friendly interface like mpegEnc, but it is more than three times faster, and it works with several popular front-end graphical user interfaces.
BladeEncs output quality is one of those rare subjects that completely divides the world in two parts. Either you love it or you hate it, there never seems to be an opinion inbetween. Different audiophiles and mp3 experts tends to come to completely different conclusions depending on their methods and testsamples.
The reason for this is of course that BladeEnc is a very different mp3 encoder (compared to Fraunhofer, LAME etc) with a very unique approach to mp3 encoding.
In order to compress sound to an mp3 file, you need to make certain sacrifices in quality. Taking into account how we percieve sound, the mp3 encoder tries to remove the details that it believes us to be least likely to notice. How much that needs to be removed depends on the bitrate and the encoder often has the choice of doing different kinds of sacrifices.
It can remove low volume tones that are "shadowed" by high volume tones of similar frequencies, remove the high frequency part of the sound spectrum, cut down the stereo effect (so called joint stereo) and simply decrease the samplerate. What approach is the best depends on a lot of things, like the style of music and the selected bitrate.
Main features:
- Sourcecode available under the LGPL-license!
- Stereo or Mono output. Can downmix to Mono on the fly.
- Supports the following bitrates: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 kBit/s. However, for bitrates lower than 128 kBit we seriously recommend you to use another encoder.
- Flags like Private, Original and Copyright can be set.
- Input samples can be in either 32, 44.1 or 48 kHz.
- Both 8 and 16-bit samples are supported.
- Working CRC checksum generation (since 0.80). The ISO reference code had broken CRC calculations, which has been inherited into every ISO based encoder that havent added a fix for it.
- Can be plugged directly into many popular 3rd party products, giving them integrated mp3 encoding abilities.
- Encodes chunks of data from memory to memory, no need to use files or pipes.
- Can be compiled for nearly any operating system still in use.
- Commandline based, makes it easy to include BladeEnc into BAT files and shell scripts.
- Only mp3 encoder that supports gapless encoding.
- Reads standard uncompressed WAV- and AIFF-files as well as well as RAW PCM-data.
- Batch encoding. Can encode any number of samples in a row.
- Wildcards supported. You can for example encode all WAV-files in a directory by typing *.WAV".
- Input samples can be automatically deleted after encoding.
- Large selection of graphical frontends available.
- Task priority can be set from the commandline and is by default set to LOWEST so that you still can use your computer effectively while encoding (Windows & OS/2 only).
- Full support for pipes and redirection (stdin and stdout).
- Textbased configuration file where you can change default settings.

Turck MMCache is a free open source PHP accelerator, optimizer, encoder and dynamic content cache for PHP. It increases performance of PHP scripts by caching them in compiled state, so that the overhead of compiling is almost completely eliminated.
Also it uses some optimizations to speed up execution of PHP scripts. Turck MMCache typically reduces server load and increases the speed of your PHP code by 1-10 times.
Turck MMCache stores compiled PHP scripts in shared memory and execute code directly from it. It creates locks only for short time while search compiled PHP script in the cache, so one script can be executed simultaneously by several engines.
MM shared memory library (http://www.engelschall.com/sw/mm/) was used by Turck MMCache before version 2.3.13 for management of shared memory and locking. Files those cant fit in shared memory are cached on disk only.
Turck MMCache was first launched in 2001 to speed up the www.guestbooks4all.com service. It has been tested under PHP 4.1.0-4.3.3 under GNU/Linux and Windows with Apache 1,3 and 2.0. Patches for ports to other OSs and PHP versions are welcome
Since version 2.3.10, Turck MMCache contains a PHP encoder and loader. You can encode PHP scripts using encoder.php in order to distribute them without sources. Encoded files can be run on any site which runs PHP with Turck MMCache 2.3.10 or above.
The sources of encoded scripts cant be restored because they are stored in a compiled form and the encoded version doesnt contain the source. Of course, some internals of the scripts can be restored with different reverse engineering tools (disassemblers, debuggers, etc), but it is not trivial.
Since version 2.3.15, Turck MMCache is compatible with Zend Optimizers loader. Zend Optimizer must be installed after Turck MMCache in php.ini. If you dont use scripts encoded with Zend Encoder then we do not recommend you install Zend Optimizer with Turck MMCache.
Turck MMCache does not work in CGI mode.
Requierments:
- apache 1.3
- mod_php 4.1
- autoconf
- automake
- libtool
- m4

crip is a terminal-based ripper/encoder/tagger tool for creating Ogg Vorbis/FLAC/MP3 files under UNIX/Linux.
It is well-suited for anyone (especially the perfectionist) who seeks to make a lot of files from CDs and have them all properly labeled and professional-quality with a minimum of hassle and yet still have flexibility and full control over everything.
Current versions of crip only support Ogg Vorbis and FLAC. If you want to make MP3 files go back to the past and use crip-1.0.
Main features:
- Track grouping for automated tagging and appropriate normalization/vorbisgain on multi-track pieces.
- CDDB fetching to populate default information.
- CDDB submit to update the CDDB database with your more accurate info.
- Automates as much of the tagging as possible for fully-labeled professional quality music files.
- Automatically trims digital silence at the beginning and end of a track/group (if desired).
- European character support. Also European character-mapping support.
- Flexibility and full user control in tagging and file naming.

Grip is a CD player and CD ripper/MP3-encoder for the GNOME desktop. It has the ripping capabilities of cdparanoia built in, but can also use external rippers (such as cdda2wav).
It also provides an automated frontend for MP3 encoders (presets for lame, bladeenc, l3enc, xingmp3enc, mp3encode, and gogo), letting you take a disc and transform it easily straight into MP3s.
The Ogg Vorbis format is also supported. Internet disc lookups are supported for retrieving track information from disc database servers.
Grip works with DigitalDJ to provide a unified, "computerized" version of your music collection.
Main features:
- Full-featured CD player with a small screen footprint in "condensed" mode
- Database lookup/submission to share track information over the net
- HTTP proxy support for those behind firewalls
- Loop, shuffle, and playlist modes
- Ripping of single, multiple, or partial tracks
- Encoding of ripped .wav files into MP3 files (as well support for OGG and FLAC)
- Simultaneous rip and encode
- Support for multiple encode processes on SMP machines
- Adding ID3v1/v2 tags to MP3 files
- Cooperating with DigitalDJ, my SQL-based MP3 jukebox
Enhancements:
- de.po: updated (G?tz Waschk)
- it.po: updated (Ceoldo Costantino)
- fr.po: updated (Eric Lassauge)
- pl_PL.po: added (Piotr Adamocha)
- id3.c: put a zero byte before the id3v1 track number (Vladimir Petrov)
- discdb.c: string parsing fixes to support i18n (Vladimir Petrov)
- discdb.c: better handling of non-UTF-8 local discdb files (Vladimir Petrov)
- various: tweaks to filesystem-safe character escaping (Vladimir Petrov)
- cdplay.c: allow retrieving of non-UTF-8 discdb entries (Vladimir Petrov)
- discdb.c: fixed a possible buffer overflow crash (Dean Brettle)
- grip.spec.in: added some missing BuildRequires (Stephen E. Dudek)
- configure.in: upped version to 3.3.1

Katiuska is a theora encoder frontend. It uses ffmpeg2theora, mencoder, the encoder_example that comes with the theora libs and a little gpl bash script that I found with google.

It can encode mostly any kind of video that ffmpeg and mencoder can (avi, mpeg4 and 2, quicktime etc).

Katiuska is also now a DVD ripping tool with an easy to use interface and default settings. Just select your audio and subtitle language if any and youre good to go.

This is my first app ever so it might not work for you at all.

Installation:

Just run ./setup.sh as root and then type "katiuska" to use it.

The mjpeg programs are a set of tools that can do recording of videos and playback, simple cut-and-paste editing and the MPEG compression of audio and video under Linux.
Recording is supported for the Zoran based cards like the Buz (Iomega), DC10 (MIRO, Pinnacle), Matrox Marvel cards and the LML33 (Linux Media Labs). See related pages to the right to find the right driver for your card.
The recorded videos can be converted to MPEG streams. The software playback of MPEG streams works with almost every player and every OS.
You can produce special forms of MPEG streams like VCD (Video CD) and SVCD for hardware playback.
A key design objective of the tools is interoperability with other video tools:
The tools can be used used to edit, playback and compress motion JPEG (MJPEG) AVIs captured using the xawtv package.
The tools can be used to edit playback and compress MJPEG streams created and editted with broadcast 2000. N.b. the current mpeg2movie high bit-rate MPEG encoder is in large part derived from an obsolescent snapshot of the mjpegtools MPEG encoder.
Enhancements:
- changes in YUV4MPEG2 API to offer support for multiple colorspaces (particularly useful for DV video), so that multiple planar YUV formats (also monochrome or alpha) are supported.
- most filtering tools have been adapted to support multiple YUV formats, so that you will not lose quality/precision in conversion steps.
- Many new or dramatically improved filters including (but not limited to):
*) yuvdenoise (denoising filter)
*) yuvdeinterlace (intelligent deinterlacing program)
*) y4munsharp (unsharp mask image sharpening program)
- Improvements in the IDCT/DCT routines in the MPEG-1/-2 encoder (much more exact now and not subject to overflow/truncation on the IA32 arch).
- MANY new utilties for importing/exporting data:
*) New and improved PGM/PNM conversion programs for dealing with PPM data.
*) Utilities to convert raw (headerless) YUV data to and from YUV4MPEG2 format. Useful when interfacing with other program suites.
*) Program (yuyvtoy4m) to convert 4:2:2 data from digital cameras into YUV4MPEG2 format for use with mjpegtools.
*) y4mstabilizer for stabilizing images with unsteady camera work
- Improvements and fixes in mplex for handling PCM audio (LPCM audio actually works now)
- DPME (Dual Prime Motion Estimation) in the encoder (mpeg2enc) is fully functional (it was present but buggy/artifacted in the earlier releases)
- Rate control in the encoder improved considerably.
- Much better Quicktime file handling (via libquicktime) especially the audio tracks.
- Besides the always-excellent x86 support, we now have full support for AMD64 (including MMX/SSE/etc. optimizations) and for PPC (e.g. Linux or OS/X), and win32 support is also available (via Cygwin/Mingw).

Oggasm is a program that makes converting your mp3 collection into oggs a all but painless process.

Using oggenc and mpg321, with perl glueing it all together, oggasm is able to go through an entire collection, identify id3 tags and then convert those mp3s into oggs while keeping the id3 tags intact.

TODO:

server-client model: When oggasm is started I want it to creat a list of jobs that need to be done and then assign those jobs to various clients that could either be running on the same machine or on other machines connected via a network.

Im of two minds on how to do this. Either I learn how to use sockets and develop my own communication protocol to tell the clients what to do, or I create physical files that are grabed by the client via ftp or samba. Each one has its advantages and disadvantages and I hope to look into it more soon.

One thing that is very important is that a client machines need to be able to come and go as necessary. So oggasm might start with 2 clients, be at 5 later in the day, and then down to 1 when it all finishes.

network functionality: How this will look will rest largly on how the server-client model ends up looking. But most likely the it will involve using ftp or samba to grab files from the server machine, convert them, and then send them back to the server. After that the
client will be assigned a new job.

improvments to user interface: This will be a on going process. As I continue to get more feedback on how people felt their experience with oggasm was I can improve how it the interface looks. Recent changes with 1.3 will allow updates to the interface to be much smother than before.

more encoder/decoder options: certainly oggenc will remain the primary encoder, however other free codecs might come along someday, and it would be nice if oggasm was modular enough to beable to plug in different encoders. I would also like to support different decoders as not everyone has mpg321 (however I will NOT provide support of non-free decoders).

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.