Free encoder software for linux

1. Ultra-low latency (typically from 3 to 9 ms)
2. Full audio bandwidth (44.1 kHz and 48 kHz)
3. Stereo support
4. Packet loss concealment
5. Constant bit-rates from 32 kbps to 128 kbps and above
6. A fixed-point version of the encoder and decoder
7. The CELT codec is meant to close the gap between Vorbis and Speex for applications where both high quality audio and low delay are desired.

Enhancements:

• Has just been released, with many quality improvements, including better stereo coupling, better handling of transients, and better handling of highly tonal signals.
• Packet loss robustness has been improved through the optional use of independent (intra) frames.
• Supports a larger dynamic range, suitable for encoding 24-bit audio (float version only).
• There is also a very early VBR implementation.
  

iksemel project is an XML (eXtensible Markup Language) parser library designed for Jabber applications.
Main features:
- Highly portable, builds on all POSIX environments and Windows (via mingw).
- Suitable for embedded systems. Code is small and highly modular, you can trim unneeded parts. Memory usage is low, parser is quite fast.
- Provides SAX, DOM and XMPP parsers.
- TLS (via gnutls) and SASL support for XMPP security.
- Only UTF8 encoding is built-in supported.
- Fully documented with examples.
Enhancements:
- New functions for appending and prepending tree nodes were added to the API.
- A file size bug in iks_load() was fixed.
- Extra padding in the base64 encoder was fixed.
- Some possible leaks in the SASL code were fixed.

Fire Encrypter is an Firefox extension which gives you encryption/decryption and hashing functionality right from your Firefox browser, mostly useful for developers or for education & fun.
The new FireEncrypter is ready! (v-3.0, this version contains the following ciphers:
- AES (Rijndael 128Bit)
- Affine
- Caesar
- XOR
- OTP (One Time Pad)
- Vigenere
- Rail Fence
- Morse Encoder
- MD2 Hashing
- MD5 Hashing
- SHA1 Hashing
- SHA256 Hashing
- SHA384 Hashing
- SHA512 Hashing
- Secure password generator.

XviD is an ISO MPEG-4 compliant video codec, so designed to compress/decompress digital video.
XviD is a open source project, which is developed and maintained by a handful of skilled and interested engineers from all over the world.
This release is the long awaited 1.1.0. It is mostly API compatible with the previous stable release as we dropped support for reduced resolution coding. If your application didnt use that feature then the upgrade is totally compatible.
Enhancements:
xvidcore:
- Improved Low bitrate quality.
- Improved VBV support
- Rate-Distortion mode decision for bvops
- New postprocessing functions, brightness and deringing
- New PowerPC port by Christoph Naegeli
- Brand new amd64 Linux 64bit port by Andre Werthmann
- Various decoder and encoder speedups
- A few bugs squashed
VFW frontend
- Mingw/CygWin support
- Various small improvements
- A few bugs squashed
DShow frontend
- Mingw/CygWin support
- Support for brightness control
- Various small improvements
- A few bugs squashed
Enhancements:
- This release fixes a potential vulnerability in mbcoding.c as reported in the Secunia advisory SA25711.

Boxtream is both an audio and video encoder and streamer and an assembly of audio and video hardware, forming a mobile video streaming studio.

It is designed to easily record and stream live presentations including a presenter and synchronized slides, or slides only, or presenter only, and was built to stream live courses over the Internet for distance learning students. It supports Extron video switchers (Kramer support is planned).

The project can be entirely controlled remotely over XML-RPC, and includes an X11 interface built with wxWidgets. It supports five different streaming scenarios. The software can still be used without most of the hardware included in the original boxtream project.

Dirac is a video codec that provides general-purpose video compression and decompression tools comparable with state-of-the-art systems.
Dirac video codec is available for distribution under the MPL version 1.1 software license.
Dirac is an open source video codec. It uses a traditional hybrid video codec architecture, but with the wavelet transform instead of the usual block transforms. Motion compensation uses overlapped blocks to reduce block artefacts that would upset the transform coding stage.
Dirac can code just about any size of video, from streaming up to HD and beyond, although certain presets are defined for different applications and standards. These cover the parameters that need to be set for the encoder to work, such as block sizes and temporal prediction structures, which must otherwise be set by hand.
Dirac is intended to develop into real coding and decoding software, capable of plugging into video processing applications and media players that need compression.
It is intended to develop into a simple set of reliable but effective coding tools that work over a wide variety of content and formats, using well-understood compression techniques, in a clear and accessible software structure. It is not intended as a demonstration or reference coder.
Enhancements:
- This is a major release to comply with the latest version of the Dirac Bytestream Specification.
- Support has been added for constant bit-rate coding in addition to existing constant quality coding.
- Arithmetic coding and motion vector data partitioning have been improved.
- The encoder and decoder API have changed.
- New patches have been released for MPlayer and FFMpeg.
- A new version of the DirectShow filter to comply with Dirac 0.7.0 has been released.