Freeware Media Players (codecs)

• ffdshow (DirectShow decoding filter for decompressing DIVX movies) [GNU GPL]



• ffvfw (MPEG-4 Video for Windows codec) [GNU GPL]



• AC3Filter [GNU GPL]



• XviD [GNU GPL]
  • Koepi's XviD binaries [GNU GPL]
  
  
  
  • Nic's XviD binaries [GNU GPL]
  
  
  
  • uManiac's XviD binaries [GNU GPL]



• MediaCoder [GNU GPL]
• Theora [BSD-style]



• FLAC [GNU GPL]