Tctdoublebj.mp4 -

: Opening it in VLC Media Player and navigating to Tools > Media Information can show codec details and any embedded descriptions.

: Right-click the file, select Properties , and go to the Details tab to see dimensions, bitrate, and duration. Mac : Right-click the file and select Get Info . TCTDoubleBJ.mp4

: The .mp4 extension identifies it as a MPEG-4 Part 14 digital multimedia container format. This format is universally used for streaming and downloading video and audio. : Opening it in VLC Media Player and