"The CDE Video Tour provides an introduction to the CDE interface and its components." I found these Videos on the "Associated Products - Volume 1" CD for Digital Unix 4.0E (1998). I'm not sure how old these Videos are, but the CDE Desktop Environment was released 1993 and 1996 it was the default Desktop for Digital Unix (Tru64). The original Video is encoded in MJPEG at 320x240 Pixels with 22KHz 8bit Mono Audio. It was difficult to puzzle this all together, since ffmpeg couldn't recognize the codec/format exactly and the audiotracks where somewhat longer then the video tracks.