Large cube shaped ufo, much larger than a 777 by size comparison. was hovering at first and fluctuating in various colors. i took footage of it in normal zoom then took more footage of it with zoom. zoomed in it appeared to be structured and cube shaped. minutes later it started to move and i began recording again, it sped off into the horizon above the clouds and at the end of the footage i showed how it was no longer in its original position. when i took a screenshot of a frame from the second video which was zoomed in and enlarged it, it appeared to be similar to a building or skyscraper with several windows. i'm attaching the original video and the enlarged image taken from the second video.