The video was produced by the George Eastman House:
Check out our recommended papers for this process.
And here is DC Editions on platinum printing:
Some of the finest photographers in the world including Irving Penn, Kenro Izu, Paul Strand, Edward Weston and Alfred Stieglitz turned to platinum printing for its ability to show a great range of subtle tonal variations. Of all that has been written about the platinum print, gallery owner John Stevenson’s writings in the inaugural volume of 21st: The Journal of Contemporary Photography, best sums up the experience of viewing a finely crafted platinum print :