After you register as a Wave user, you can create up to 5 videos, export them up to 30 seconds long in .mp4. They will have certain limitations, like the Wave watermark. Also, you will be able to upload only 1 video and 5 images.
Yes, you can use stock video clips, images, and audio files in your videos. Please note: only users with the Corporate subscriptions have access to the Premium stock. Upgrade to enjoy all the great features of Wave!
When you are ready to upgrade, please visit this page: https://www.animatron.com/wave/pricing to choose a plan that suits you best.