Crediting CC-licensed work in video:
"Adding the appropriate credit information to your videos could be as simple as a list of the works used at the end with their associated license. Eg:
This video features the following songs:
“Desaprendere (Treatment)” by fourstones, available under a Creative Commons Attribution-Noncommercial license.
“Some Other Song” by fourstones, available under a Creative Commons Attribution license.
If possible, it is desirable to make the title, author, and license links the viewer can follow."
This information is courtesy of the Creative Commons Wiki. To read more, see this article "Best Practices for Marking Content with CC Licenses: Users."