I have purchased a lot of Unreal Engine 4 assets from the marketplace and I would like to know is it ok to create short animated films with using these assets and add them to my youtube channel? I always assumed it was ok considering I purchased them with my credit card but I would like to get more if its allowed? (and sorry if its a dumb question)
yup, you are free to do so.
Even if you make money of off them, since movies are (still?) exempt from % payment if you generate a lot of income.
At least, unless that changed.