LAV Filters (Code - Download - Development builds)
Source filter, audio decoder, and video decoder for many formats.
ffdshow
A DirectShow filter that can decode many audio and video formats.
Haali Media Splitter
Source filter for the Matroska, MP4, Ogg, MPEG and AVI containers.
madFLAC
Source and decoding filter for FLAC audio.
DC-Bass Source
DC-Bass Source Mod
Source and decoding filter for several audio formats. For example ALAC, AAC, Tracker and TrueAudio.
ReClock
Audio renderer with many options. WASAPI output. Audio time stretching (for PAL speedup compensation). Video frame rate correction.
Media Player Classic Home Cinema (MPC-HC)
Doom9
Lots of encoding tutorials and a forum with multimedia experts.
Handbrake
Excellent video conversion tool.
Avidemux
Excellent video conversion tool.
VirtualDub
Basic video editing and encoding tool.
MKVToolnix
A powerful set of tools for (re-)muxing Matroska files.
Bytepointer
Some useful command line file utilities for developers
RareWares
Information about AAC, Ogg Vorbis and MPEG4.
Hydrogen Audio
Audio experts
FourCC.org
List of common Four Character Codes that are used by codecs to identify themselves.
