That indeed looks to be the problem, we have some ideas in store to fix this but for now source media is limited to one hour. I filed an issue to report the co

That indeed looks to be the problem, we have some ideas in store to fix this but for now source media is limited to one hour. 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!