A description of the video e.g. ‘Gangnam style’, or some kind of content description for accessibility e.g. ‘video attachment’.
OptionalfileRequired if the file is encrypted. Information on the encrypted file, as specified in End-to-end encryption.
OptionalinfoMetadata about the video clip referred to in url.
One of: [m.video].
OptionalurlRequired if the file is unencrypted. The URL (typically mxc:// URI) to the file.
Content format of media events with msgtype
m.videoSee
https://spec.matrix.org/v1.9/client-server-api/#mvideo