File Extension RVX File Format RealVideo Streaming File ( Protected ) ( Real Networks Inc.) RVX stands for RealVideo Streaming File ( Protected ) ( Real Networks Inc.). This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question How to calculate logical file size Track Changes to Files and Folders Does RIP support discontinuous networks?