A cross-platform DVD authoring application
MP4Tools is a collection of free tools to manipulate MP4 files
Video to GIF converter
Various multi-platforms projects coded in FreePascal/Lazarus or Qt C++
A video-based animated GIF creator
Mmpx easy convert video and trace FLV to AVI (MPEG-4) library h.263
MPEG-4 x264 Encoder GUI
dvd backup and authoring tools
Audio converter for GNOME