https://www.slashgear.com/google-photos-ends-unlimited-free-storage-for-unsupported-videos-11557690/ "Google had announced the unlimited free Photos storage back around summer 2015, and though it still offers that same great perk, it has made an adjustment. " This adjustment may be fine for some, but may effect others. And definately Linus's free backup hack. "All videos uploaded to Google Photos after December 6, 2018, will take up storage space if they’re in an unsupported format. " "An unsupported video format would be, for example, a raw video that’s uncompressed for post-processing later on. "