File Extension XMV File Format video - Xbox XMV stands for video - Xbox. 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 record your voice and party chat on the Xbox One with a HD video game capture 1080p HDMI recorder How much BMPS is enough for a family of 5? Whats Up and Coming in Gaming?!