Atomic Elroy’s Weekly Multi-Media Minute ( from the MediaDump Project ) These VidKeyMix MultiMedia Minutes come from a process of feeding 2 video sources into a mixer and using a luma key effect to collage them together. Luma Key uses luminance instead of color to key over the image. This is then fed into another mixer already luma keying two additional images. This process can be continued until a very dense final image is produced. This also produces a controlled chaos of sorts. DADA randomization..