there are several on-line GIF creator sites on the net, but the only one that fits the criteria (and doesn't plaster a logo on it) I put a link for it in my post here:
https://steemit.com/art/@thermoplastic/deep-dream-gif-generator-and-deep-dream-video
but just so you don't have to look for it scrolling around in my post, here is the link:
http://gifcreator.me/