Screencasting is such a great way to get students to demonstrate learning. It gives students the opportunity to insert their voice into and take ownership of their learning. Managing student video recordings, though, can be a hassle. Not too long ago, Screencastify added a feature called Submit. What this does is coordinate with Google Classroom and allows you to create assignments where students will turn in a screencast right from Screencastify.
If you're a current Screencastify user, free or premium, go to your Screencastify account and click My Account.
If at all possible, I recommend adding the paid version of Submit to your account. But if that's not possible, you can accomplish much with the free version.