The video was directed by Clement Picon, who entered a competition online to create a promo for the song.
The Oxford band were so impressed with his effort, they chose it as the official promo video.
Writing on the band’s blog Dead Air Space, frontman Thom Yorke praised Picon: “Here is one of my favourite video things that has ever happened. It is the result of somebody entering a competition to make an animation to one of the tunes on ‘In Rainbows’.
“So we asked them [Picon] whether it was OK to make it the official one we use as it goes with the song so well. They said yes.”
As previously reported, Radiohead are allowing fans to submit their own remixes of ‘Reckoner’ to Radioheadremix.com.