Identifies the codec used in AVI files (*.avi) and allow the user to change the FourCC description code (like fourcc-changer in Windows). Useful for people working with Microsoft AVI file. A Linux clone of AviC fourcc changer tool. No need to re-encode or copy the sound and video streams. TIP: Some programs (like divx player) require the tag DIVX instead of XVID or FMP4 or... divx or (e.t.c.) to play mpeg4 files.