Dateutils are a bunch of tools that revolve around fiddling with dates and times in the command line, with a strong focus on use cases that arise when dealing with large amounts of financial data. Their target market is shell scripts that need date calculations or calendar conversions, and as such they are highly pipe-able and modeled after their well-known cousins (e.g. dtest vs. test, or dgrep vs. grep).
The ogmtools allow users to display information about (ogminfo), extract streams from (ogmdemux), merge several streams into (ogmmerge), and split (ogmsplit) Ogg files. Supported stream types include video streams from AVIs or Ogg files and Vorbis audio from Ogg files. The resulting files can be played back with mplayer or with the OggDS Direct Show filters under Windows.
OGMRip is an application and a set of libraries for ripping and encoding DVDs into AVI/OGM files using a wide variety of codecs. It relies on mplayer, mencoder, ogmtools, oggenc, and lame to perform its tasks. The GUI features a clean HIG-compliant GNOME 2 interface and tries to minimize (as much as possible) esoteric settings.
audio convert is a script that converts between WAV, Ogg, MP3, MPC, FLAC, APE, AAC, and WMA files. It has an easy-to-use interface that makes it possible to fill in the tags for a few formats, copy the tags from input files into the new files, and choose the quality of compression. The script was initially designed for the Nautilus file browser and can be easily installed into Nautilus by using the installer provided with the script. You can then right-click on files and choose "audio-convert" from the "scripts" menu. The script is also known to work on rox or directly from a shell.
NewVideoRecorder is a high quality video capture toolkit for Linux. It includes deep buffering of audio and video to reduce frame dropping, a smooth dropping algorithm to keep the video smooth if dropping is required, and dynamic stretching of the audio stream to exactly match the video stream. It can use v4l1 and v4l2 devices as video sources, and OSS devices as an audio source. It can produce QuickTime, AVI, NuppelVideo 0.52 files, MPEG-1 files, and all files supported by ffmpeg (through the ffmpeg library). It also includes tools and utilities for high quality video streaming (multicast and unicast).
Mp3blaster is an interactive text-based program that plays several audio file types (MP3, Ogg Vorbis, wav, and sid). It is one of the few audio players for the text console that allows full interactive control during playback. One of its key features is the ability to compose a very flexible playlist (while playing!). It plays most MP3 formats and has full mixer support built in.