A video compression codec that Google (https://www.youtube.com/testtube) and Netflix (http://www.csimagazine.com/csi/Netflix-AV1-is-our-primary-next-gen-codec.php) have supported. 20-40 times smaller files.

Admin Note:

Due to limited browser support for AV1 videos, it's unlikely that we'll build this capability unless there's full browser support.