Regardless of the specific subject, using the format for these educational files is standard because:
In academic environments like the University of Illinois (UIUC), "MP4" frequently stands for "Machine Problem 4." A file labeled "Lsm13" in this context refers to a lab or lecture on Linux Security Modules (LSM) , a framework used to implement mandatory access control (MAC) in the Linux kernel. Lsm13 01 02 mp4
It can include chapter markers and metadata, which is highly useful for navigating long technical tutorials or lecture recordings. Regardless of the specific subject, using the format