We've chosen to prioritize speed over quality for the initial launch so at this time but are working on transcoding to various sizes and qualities to return based on the client's device size and internet speed in the player or when someone wants to share a super high quality (and file size) GIF.
I'm trying to create a 10-second gif starting at 71:16 of https://gifs.com/watch?v=LW6hPl6zx5Q.
I get "Your Gif could not be created at this time.". I hope you're able to fix it, gifs.com looks fantastic. If/when it works, I'll use it a lot!
I filed an issue to report the correct error message and log this as an event so we could see how many times it's happening.
Sorry about that and I hope you find some other AoE videos to gif!