The file name b_099.mp4 commonly refers to a specific technical document, "Reversibility of Codes," in Joint Video Team (JVT) documentation, or serves as a target in digital forensics and CTF challenges. It may also appear in automated systems, such as local Zoom recordings or security camera footage, as part of a sequential naming convention. For more information regarding local recording conventions, visit Zoom Community . Local Recordings - "double_click_to_convert_01" | Community