We don't know any good Fotor AI video generator open-source alternatives yet.
You are more than welcome to suggest any alternatives that you know of, or ask the community for suggestions.
Alternatively, we recommend checking out LibHunt for open-source libraries and alternatives to Fotor AI video generator.
FOTOR AI doesn't warn people on the front page (where you can type in a script for an ai-generated video) that they demand the stinking GOOGLE RECAPTCHA. I block GOOGLE everywhere because they are the queen of data mining whoors. Wasted a good 15 minutes of my time composing an idea before encountering Googleborg's gatekeeper AFTER Fotor suckered me into providing an email addie.