A .ivf file is an Intel Indeo video technology file. Latest versions of Windows Media Player should play back this video format. Indeo Video (commonly known now simply as "Indeo") is a video codec developed by Intel in 1992. It was sold to Ligos Corporation in 2000. While its original version was related to Intel's DVI video stream format, a hardware-only codec for the compression of television-quality video onto compact disks, Indeo was distinguished by being one of the first codecs allowing full-speed video playback without using hardware acceleration. It is often used as in-game video during cutscenes.