OneDrive is online, so you can only upload to it, not download to it. If you want to share the video, either share a link directly to the file in your OneDrive folder, or first download the video to your phone and then send it over WhatsApp.
Whatsapp doesn't act as Share Target.. Therefore we developers cannot send any kind of data to whatsapp.
If the developers enable option Share Target (WP 8.1) we can send.