Free vbr codec software for linux

gbDVDenc is an easy to use GUI for mencoder to rip & encode DVD into mpeg4 files. gbDVDenc is written in Gambas.
gbDVDenc project needs Mplayer and/or Mencoder and lsdvd to work.
Main features:
- Selection of part of the track by chapters or minutes:seconds
- Audio resample.
- Volume gain.
- Subtitles
- Deinterlace.
- Auto-cropping (with preview)
- Resize.
- Fps conversion.
- Integrated bitrate calculator.
- Save & load of configuration files.
- Italian and english language
Enhancements:
- NEW: Redesigned Log window.
- NEW: Added support for MP4 codec (for PSP video).
- NEW: Added support for Ogg Theora codec.
- NEW: Added option to normalize audio volume.
- NEW: Added delogo option to mask TV stations logo.
- NEW: Added post-encoding command option (useful to shutdown the pc when - finished encoding).
- NEW: Added comments to matrix editor.
- NEW: New icons (thanks Dennis!)
- UPD: Updated french translation (thanks Johan!)
- BUGFIX: Some bugfixes. :-)
- BUGFIX: Fixed and changed OGG encoding.
- BUGFIX: Wait form now remembers its position.
- BUGFIX: Fixed bitrate calculator with ac3 sound.
- BUGFIX: Fixed some bugs in the resize algorithm.

Avi 2 iPOD (mp4) project can batch or single convert your .Avi files to .mp4 so you can watch them on your video iPOD.

The video codec is xvid and audio is aac.

Options:

Audio bitrate
Video bitrate
Aspect ratio
Resolution (640x368 for TV output)

This program identifies the codec used in AVI files (*.avi) and allow the user to change the FourCC description code (like fourcc-changer in Windows). It is useful for people working with Microsoft AVI file.
I created this simple program after reading divx/mpeg4 related forums. It comes to me that there arent any software developed in GNU/Linux (nor other UN*X-variant) that have similiar functionality as "Nics Mini AviC" in Microsoft Windows platform.
FourCC (Four Character Code) is a (rather crude) method to identify codec used to encode Microsoft RIFF AVI files. Application software/hardware use the FourCC to correctly select a codec suitable for playing the AVI file in question. The problem arises when a video player (usually the hardware one) fail to recognize a FourCC, and unable to select a newer/compatible codec to play the AVI file. This simple program solves this problem by providing a simple way to change the FourCC of the AVI file to a value accepted by the video player.
Enhancements:
- add -f (force) option to enable changing FourCC in unsupported files.

rawrec is a tool designed to provide the user with a simple way of recording or playing raw audio data from or to their sound card under intel Linux.
Main features:
- ability to record to or play from standard io. With this program and other handy things like the sox format converter, Ogg Vorbis lossy codec, and FLAC lossless codec, you can record or play just about any sound format you will ever come accross, with the notable exception of mp3s.
- options to pause execution, pad with silence, or jump into data files, as well as the ones you would expect which control sampling rate, sample resolution, and number of channels.
- an option to enable (amoung other things) exact reporting of what your sound card is doing. In case you are involved in speech processing research and need to know what frequency your card actually uses when you request a given frequency, for example.
- fully buffered and threaded. rawrec/rawplay use memory locking and POSIX pthread functions to provide the most consistent possible performance under load.
- ability to set the buffer fragment size, if you need extremely low latency operation.
Enhancements:
- In play.c, record.c, move_au.c, and move_fd.c, a bug that caused root permissions to be dropped before all threads were created has been fixed. In main.c, command line help output and a problem when the program is invoked via the full path name have been fixed.

XLV is intended to be the middle-ware implementation of multimedia streams for Linux. It is extensively based on plugins and dynamic-linking. For the moment, XLV is in active development and contains many features:


an OS independent core, completely multi-threaded to share the complexity of streams into multiple processes
an audio-video highly synchronised core
a full bunch of plugins including:
o an SDL video output driver supporting YUV overlay, resize and fullscreen
o an ESD/OSS audio output driver
o PCM automatic filter (PCM to PCM)
o MPEG Layer 1,2,3 audio decoder (based on MPG123)
o Win32 video codec import (Win32 audio codec import in progress)
o RIFF abstract decoders
o AVI system decoders
o WAVE system decoders
a GTK player for XLV with seek abili

Trf is an extension library to the script language tcl, as created by John Ousterhout. It extends the language at the C-level with so-called "transformer"-procedures.

With the help of some patches to the core the package is able to intercept all read/write operations on designated channels, thus giving it the ability to transform the buffer contents as desired.

Existing transforms include Base64, UUencode, Hashes (SHA, MD5, ...), error correction codec, zlib-based compression, script level transforms.