If the image looks like it has frames missing, it's because the danbooru post API / browser render is acting up. (I used the bookmarklet to upload this) Sad to say, but the ugoira converter website by dataprocessingclub no longer converts R-18 posts because you need to be logged in for the scraping to occur.

here's the downloaded one via the "Px Downloader" extension for firefox, since I refuse to use chrome: https://i.imgur.com/SuBrlij.mp4