Not just from a URL on the web, but also from a local video file in the camera roll?
This! This please!
Also if you do this please have a "select all frames" button as well instead of having to manually select them all.
Also allow batch actions like rotate, crop, and reposition.
Similar request for batch action on frames: http://giffer.uservoice.com/forums/152157-support-and-feature-requests/suggestions/3426209-add-gif-crop-where-every-photo-in-the-gif-is-cropp
PS: I'm not sure if I'm helping when I point out duplicates.. I want to help, but if it's annoying I'll stop!
If it's not already doing this then it's a photo stream limitation on Apple's end (just like how videos aren't sent to the stream). Nothing giffer can do about it. You can jailbreak your device and install something like PhotoAlbums+ from Cydia which lets you manually push pictures onto the stream.