recordMyDesktop : desktop session recorder for Linux

recordMyDesktop is a desktop session recorder for

GNU / linux

that attemps to be easy to use, yet also effective at it's primary task. As such, the program is separated in two parts; a simple command line tool that performs the basic tasks of capturing and encoding and an interface that exposes the program functionality in a usable way.
The commandline tool (which essentially is recordMyDesktop), is written in C,

while there are two frontends, written in python with pyGtk (gtk-recordMyDesktop) and pyQt4 (qt-recordMyDesktop).

recordMyDesktop record audio offers also the ability to through ALSA, OSS or the audio server JACK

Before using recordMyDesktop, it is suggested that you visit the Documentation section of this site and in particular, read the User Guide, in order to get a better understaning of how to use the program.
Also,
recordMyDesktop produces files using only open formats
These are theora for video and vorbis for audio, using the ogg container.

(To learn more about free formats visit Xiph.org, the foundation responsible for the aformentioned formats).

MPEG4IP

MPEG4IP provides an end-to-end system to explore streaming multimedia. The package includes many existing open source packages and the "glue" to integrate them together. This is a tool for streaming video and audio that is standards-oriented and free from proprietary protocols and extensions.

Provided are a live MPEG-4/H.261/MPEG-2/H.263 MP3/AAC/AMR broadcaster and file recorder, command line utilities such as an MP4 file creator and hinter, and an player that can both stream and playback from local file.