We are no longer making any updates to RealPlayer Cloud, RealPlayer 16, or prior versions, so some features (such as Download This Video) may not work on these versions.
As RealNetworks makes new products available to customers, it's not possible for us to continue supporting older products.
We always recommend using our most current version, which you can download here. The most current version is RealPlayer with RealTimes, available for customers on Windows 7 and higher (or Mac OS X 10.10 and higher).
Once you installed the latest version, you able to download videos.
However, you can also refer to this article: https://customer.real.com/hc/en-us/articles/204040433