There is not yet functionality that will allow uploading from Sitefinity to file storage outside the server infrastructure. Media files are uploaded in the database or saved locally. This is because Sitefinity upload controls are currently managing the upload and then selection of items from media libraries. The media libraries currently list only contents available in the database. You can integrate links to videos stored at a remote server in the site, but if you want to list all videos using Sitefinity media selector dialogs they will list only the contents from libraries.
As an alternative to selecting remotely stored videos you may create a custom control that will connect to akamai and list the available videos available for selection.
the Telerik team
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system and vote to affect the priority of the items